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Preferential Oxidation of CO in H 2 by Aqueous Polyoxometalates over Metal Catalysts
Author(s) -
Kim Won Bae,
Voitl Tobias,
RodriguezRivera Gabriel J.,
Evans Steven T.,
Dumesic James. A.
Publication year - 2005
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200461601
Subject(s) - polyoxometalate , aqueous solution , catalysis , anode , inorganic chemistry , metal , chemistry , fuel cells , proton exchange membrane fuel cell , materials science , chemical engineering , electrode , organic chemistry , engineering
Stream cleaning : CO in CO/H 2 mixtures is oxidized preferentially at room temperature with an aqueous polyoxometalate (POM) solution over gold catalysts (see scheme). The rate of H 2 oxidation is slow and is inhibited by CO. This process can be used to remove CO efficiently from H 2 gas streams. The solution containing protons and reduced POM can be used to produce electrical energy at a fuel‐cell anode through re‐oxidation of the reduced POM.