INVESTIGADORES
CADUS Luis Eduardo
artículos
Título:
CHROMIUM OXIDE SUPPORTED ON Al2O3: CATALYTIC DEHYDROGENATION OF PROPANE
Autor/es:
MENTASTY, LILIANA R; GORRIZ, OSVALDO F; LUIS EDUARDO CADUS
Revista:
INDUSTRIAL & ENGINEERING CHEMICAL RESEARCH
Referencias:
Lugar: Washington, DC; Año: 1999 vol. 38 p. 396 - 404
ISSN:
0888-5885
Resumen:
Chromium oxide was supported on different commercial aluminas. Their characteristics were
assessed by different techniques (X-ray diffraction, X-ray photoelectron, laser Raman, and
electron paramagnetic resonance spectroscopies, and Brunauer-Emmett-Teller surface, temperature-
programmed reduction, and temperature-programmed desorption measurements). The
variation of the Cr3+/Cr6+ ratio was accounted for by the interaction between the chromium
phase and the support. The tendency of Cr3+ to form aggregates such as Cr2O3 was induced by
the support. The features of the support exert an influence upon chromium stabilization both
in its oxidation states 6+ and 3+ and in the coordination of surface chromia species. The total
acid sites and the oxidized chromium have a marked effect on activity and selectivity at initial
operation times.-Emmett-Teller surface, temperature-
programmed reduction, and temperature-programmed desorption measurements). The
variation of the Cr3+/Cr6+ ratio was accounted for by the interaction between the chromium
phase and the support. The tendency of Cr3+ to form aggregates such as Cr2O3 was induced by
the support. The features of the support exert an influence upon chromium stabilization both
in its oxidation states 6+ and 3+ and in the coordination of surface chromia species. The total
acid sites and the oxidized chromium have a marked effect on activity and selectivity at initial
operation times.3+/Cr6+ ratio was accounted for by the interaction between the chromium
phase and the support. The tendency of Cr3+ to form aggregates such as Cr2O3 was induced by
the support. The features of the support exert an influence upon chromium stabilization both
in its oxidation states 6+ and 3+ and in the coordination of surface chromia species. The total
acid sites and the oxidized chromium have a marked effect on activity and selectivity at initial
operation times.3+ to form aggregates such as Cr2O3 was induced by
the support. The features of the support exert an influence upon chromium stabilization both
in its oxidation states 6+ and 3+ and in the coordination of surface chromia species. The total
acid sites and the oxidized chromium have a marked effect on activity and selectivity at initial
operation times.+ and 3+ and in the coordination of surface chromia species. The total
acid sites and the oxidized chromium have a marked effect on activity and selectivity at initial
operation times.