INVESTIGADORES
FALCO Marisa Guadalupe
artículos
Título:
The calcination temperature after platinum addition and its effect on Pt/WOx-ZrO2 properties
Autor/es:
M.G. FALCO; S.A. CANAVESE; N.S. FÍGOLI
Revista:
CATALYSIS COMMUNICATIONS
Editorial:
Elsevier
Referencias:
Año: 2001 p. 207 - 211
ISSN:
1566-7367
Resumen:
Platinum on tungsten oxide promoted zirconia was prepared using two different platinum precursors: hexachloroplatinic acid and tetraammine platinum nitrate. The catalyst were calcined at different temperatures after platinum addition. The materials were characterized by thermal-programmed reduction, transmission electron microscopy, hydrogen chemisorption at room temperature and they were used for n-hexane isomerization reaction. The calcination temperature after metal addition plays an important role on the catalyst properties. Calcination above 500 ºC after platinum addition is not convenient because of the migration of zirconia species over Pt, thus decreasing the hydrogen dissociation capacity of Pt.
