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Proceedings Paper

In-situ FTIR characterization of Pt particles on modified alumina:geometric and electronic effects due to dopant ions
Author(s): N. Zanier-Szydlowski; B. Moisson; F. Blejean; B. Didillon
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Paper Abstract

The addition of alkali promoters to heterogeneous catalysts has been known to improve their properties; this is the case for dehydrogenation catalysts where alumina supported Pt is generally promoted with Li and K1. For this kind of reaction, addition of foreign cations was performed to neutralize support acidic sites which catalyze unwanted reactions such as cracking, isomerization and coke formation. But the promoters can also affect the supported metal properties and thus change its catalytic behavior and selectivity. In order to elucidate the variation of accessibility and/or electronic state of Pt supported on modified alumina, we have studied the influence of anions and cations on Pt properties for a series of catalysts by in-situ FTIR spectroscopy of chemisorbed CO.

Paper Details

Date Published: 31 January 1994
PDF: 2 pages
Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); doi: 10.1117/12.166638
Show Author Affiliations
N. Zanier-Szydlowski, Institut Francais du Petrole (France)
B. Moisson, Institut Francais du Petrole (France)
F. Blejean, Institut Francais du Petrole (France)
B. Didillon, Institut Francais du Petrole (France)

Published in SPIE Proceedings Vol. 2089:
9th International Conference on Fourier Transform Spectroscopy
John E. Bertie; Hal Wieser, Editor(s)

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