MODIFICATION OF PLATINUM-ALUMINA CATALYSTS - EFFECT OF THE ADDITION OF LITHIUM TO PLATINUM IN THE DEHYDROGENATION OF CYCLOHEXANE

Authors
PASSOS FB FRETY R SCHMAL M
Citation
Fb. Passos et al., MODIFICATION OF PLATINUM-ALUMINA CATALYSTS - EFFECT OF THE ADDITION OF LITHIUM TO PLATINUM IN THE DEHYDROGENATION OF CYCLOHEXANE, Catalysis letters, 29(1-2), 1994, pp. 109-113
Citations number
14
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
29
Issue
1-2
Year of publication
1994
Pages
109 - 113
Database
ISI
SICI code
1011-372X(1994)29:1-2<109:MOPC-E>2.0.ZU;2-V
Abstract
The modification of platinum-alumina catalysts by 0.1 wt% lithium does not affect to a large extent the dehydrogenating properties of platin um. However, when lithium is added to platinum through impregnation by nitrate salt in a higher content, residual nitrate species can remain on the catalyst surface, even after calcination at 773 K. These nitra te species can be co-reduced with the platinum precursor and be associ ated to a significant sintering of the platinum particles.