Artículo
O2 and O3 regeneration of PtReSn/Al2O 3 and PtReGe/Al2O3 naphtha reforming catalysts prepared by catalytic reduction
Fecha de publicación:
11/2010
Editorial:
Elsevier Science
Revista:
Applied Catalysis A: General
ISSN:
0926-860X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The deactivation and regeneration of naphtha reforming PtReGe/Al 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.
Palabras clave:
Naphtha
,
Ptrege/Al2o 3
,
Ptresn/Al2o3
,
Reforming
,
Regeneration
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Articulos(INCAPE)
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Citación
D'Ippolito, Silvana A.; Especel, Catherine; Epron, Florence; Marécot, Patrice; Pieck, Carlos Luis; O2 and O3 regeneration of PtReSn/Al2O 3 and PtReGe/Al2O3 naphtha reforming catalysts prepared by catalytic reduction; Elsevier Science; Applied Catalysis A: General; 388; 1-2; 11-2010; 272-277
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