INVESTIGADORES
PIERELLA Liliana Beatriz
artículos
Título:
Catalytic Activity and Magnetic Properties of Co-ZSM-5 zeolites prepared by different methods
Autor/es:
LILIANA B. PIERELLA; CLARA SAUX; SILVANA C. CAGLIERI; HECTOR R. BERTORELLO; PAULA G. BERCOFF
Revista:
APPLIED CATALYSIS A-GENERAL
Editorial:
Elsevier
Referencias:
Lugar: Netherlands; Año: 2008 vol. 347 p. 55 - 61
ISSN:
0926-860X
Resumen:
Abstract
The selective catalytic oxidation of styrene with hydrogen peroxide was studied
over Co-ZSM-5 catalysts which differ in the preparation methods. The catalysts were
obtained from NH4
+-ZSM-5 by wetness impregnation and ion-exchange techniques
followed by different post-thermal treatments: oxidation and reduction. The
characterization of acidic properties by FTIR of adsorbed pyridine revealed that new
and strong Lewis sites (1452 cm-1), different from those characteristics of aluminum in
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
followed by different post-thermal treatments: oxidation and reduction. The
characterization of acidic properties by FTIR of adsorbed pyridine revealed that new
and strong Lewis sites (1452 cm-1), different from those characteristics of aluminum in
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
followed by different post-thermal treatments: oxidation and reduction. The
characterization of acidic properties by FTIR of adsorbed pyridine revealed that new
and strong Lewis sites (1452 cm-1), different from those characteristics of aluminum in
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
followed by different post-thermal treatments: oxidation and reduction. The
characterization of acidic properties by FTIR of adsorbed pyridine revealed that new
and strong Lewis sites (1452 cm-1), different from those characteristics of aluminum in
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
followed by different post-thermal treatments: oxidation and reduction. The
characterization of acidic properties by FTIR of adsorbed pyridine revealed that new
and strong Lewis sites (1452 cm-1), different from those characteristics of aluminum in
the matrix (1456 cm-1) were generated by cobalt introduction. Styrene conversion shows
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites concentration.
Benzaldehyde was the main product in all the samples under study. The samples
magnetic properties were improved with the cobalt incorporation and the applied
2
thermal treatments. The catalytic and magnetic properties of Co-ZSM-5 samples are
discussed.
an important increment over the exchanged samples as compared to the impregnated
ones. This behavior may be explained by the high Lewis acid sites co