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Additive effect of alkali metal ions on preferential CO oxidation over Pt/Al2O3

Paper ID Volume ID Publish Year Pages File Format Full-Text
52624 46879 2006 4 PDF Available
Title
Additive effect of alkali metal ions on preferential CO oxidation over Pt/Al2O3
Abstract

In the preferential CO oxidation under H2-rich gas, CO conversion and selectivity of CO oxidation were enhanced by the addition of alkali metal ions (M = Li, Na, K, Rb, Cs) to Pt/Al2O3 in the range of the molar ratio (M/Pt) lower than 3, and TOFs monotonously increased along with the basicity strength of added alkali metal ions. In contrast, in the range of M/Pt ⩾ 5, the order of additive effect was K > Na > Rb > Cs. This can be related to a moderate strength of basicity of potassium. In addition, the promoting effect of the presence of H2 on CO oxidation was also clearly observed on K–Pt/Al2O3.

Keywords
Preferential CO oxidation; Platinum; Alkali metal ions; Potassium; Basicity
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Additive effect of alkali metal ions on preferential CO oxidation over Pt/Al2O3
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 7, Issue 9, September 2006, Pages 623–626
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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