INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
O2 and O3 regeneration of PtReSn/Al2O3 and PtReGe/Al2O3 naphtha reforming
Autor/es:
S.A. DIPPOLITO; C. ESPECEL; F. EPRON; P. MARÉCOT; C.L. PIECK
Revista:
APPLIED CATALYSIS A-GENERAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2010 p. 272 - 277
ISSN:
0926-860X
Resumen:
The deactivation and regeneration of naphtha reforming PtReGe/Al2O3 and PtReSn/Al2O3 catalysts prepared
by catalytic reduction were studied. The extent and nature of coke deposition as determined by
TPO were related to catalyst properties such as dispersion, acidity and Cl content. The PtReSn catalyst
was the most resistant to coke deactivation.
Regeneration was performed by calcination in oxygen at 450 ◦C or ozone at 125 ◦C at variable regeneration
times. Regenerated catalysts were evaluated by cyclopentane hydrogenolysis, cyclohexane
dehydrogenation and n-heptane reaction tests. Regeneration by oxygen burning-off was the most effective
for decoking. However, oxygen combustion produced more segregation of the metal function than
ozone regeneration. With the regeneration conditions used in this work, the original acidity of the
catalysts cannot be recovered.
times. Regenerated catalysts were evaluated by cyclopentane hydrogenolysis, cyclohexane
dehydrogenation and n-heptane reaction tests. Regeneration by oxygen burning-off was the most effective
for decoking. However, oxygen combustion produced more segregation of the metal function than
ozone regeneration. With the regeneration conditions used in this work, the original acidity of the
catalysts cannot be recovered.
by catalytic reduction were studied. The extent and nature of coke deposition as determined by
TPO were related to catalyst properties such as dispersion, acidity and Cl content. The PtReSn catalyst
was the most resistant to coke deactivation.
Regeneration was performed by calcination in oxygen at 450 ◦C or ozone at 125 ◦C at variable regeneration
times. Regenerated catalysts were evaluated by cyclopentane hydrogenolysis, cyclohexane
dehydrogenation and n-heptane reaction tests. Regeneration by oxygen burning-off was the most effective
for decoking. However, oxygen combustion produced more segregation of the metal function than
ozone regeneration. With the regeneration conditions used in this work, the original acidity of the
catalysts cannot be recovered.
times. Regenerated catalysts were evaluated by cyclopentane hydrogenolysis, cyclohexane
dehydrogenation and n-heptane reaction tests. Regeneration by oxygen burning-off was the most effective
for decoking. However, oxygen combustion produced more segregation of the metal function than
ozone regeneration. With the regeneration conditions used in this work, the original acidity of the
catalysts cannot be recovered.
2O3 and PtReSn/Al2O3 catalysts prepared
by catalytic reduction were studied. The extent and nature of coke deposition as determined by
TPO were related to catalyst properties such as dispersion, acidity and Cl content. The PtReSn catalyst
was the most resistant to coke deactivation.
Regeneration was performed by calcination in oxygen at 450 ◦C or ozone at 125 ◦C at variable regeneration
times. Regenerated catalysts were evaluated by cyclopentane hydrogenolysis, cyclohexane
dehydrogenation and n-heptane reaction tests. Regeneration by oxygen burning-off was the most effective
for decoking. However, oxygen combustion produced more segregation of the metal function than
ozone regeneration. With the regeneration conditions used in this work, the original acidity of the
catalysts cannot be recovered.
times. Regenerated catalysts were evaluated by cyclopentane hydrogenolysis, cyclohexane
dehydrogenation and n-heptane reaction tests. Regeneration by oxygen burning-off was the most effective
for decoking. However, oxygen combustion produced more segregation of the metal function than
ozone regeneration. With the regeneration conditions used in this work, the original acidity of the
catalysts cannot be recovered.
◦C or ozone at 125 ◦C at variable regeneration
times. Regenerated catalysts were evaluated by cyclopentane hydrogenolysis, cyclohexane
dehydrogenation and n-heptane reaction tests. Regeneration by oxygen burning-off was the most effective
for decoking. However, oxygen combustion produced more segregation of the metal function than
ozone regeneration. With the regeneration conditions used in this work, the original acidity of the
catalysts cannot be recovered.