Abstract
The effects of chloride, phoshate, and cesium ions on Au/γ-Al2O3 for selective CO oxidation in H2 was examined. The difference in activity between this catalyst and the catalyst not treated with Mg-citrate suggested that small Au particle size could not be a necessary requirement for high activity and the Cl- has a direct inhibitive effect on the catalyst. The transient behavior of the catalysts to which Cl- was added supported the proposal that Cl- poisons the active site by replacing the Au+ - OH- with Au+ - Cl-. Phosphate anions also acted to blocked the active sites for CO oxidation, while Cs ions adversely affected H2 oxidation.
Original language | English (US) |
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Pages (from-to) | 669-670 |
Number of pages | 2 |
Journal | ACS Division of Fuel Chemistry, Preprints |
Volume | 47 |
Issue number | 2 |
State | Published - Aug 2002 |
Event | 224th ACS National Meeting - Boston, MA, United States Duration: Aug 18 2002 → Aug 22 2002 |
ASJC Scopus subject areas
- General Energy