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Copper Supported on TiO2 Nanotubes as Catalyst for the Preferential Oxidation of Carbon Monoxide

Sichem Guerrero-Ruz1, R. F. Li2, T. Shibata3, Jeffrey T. Miller4, and Eduardo E. Wolf2. (1) Chemical Engineering Department, Center for Advanced Interdisciplinary Research in Materials (CIMAT), Universidad de Chile, Beauchef 861, Santiago, Chile, (2) Chemical Engineering, University of Notre Dame, 182 Fitzpatrick, Notre Dame, IN 46556, (3) Bcp, Illinois Institute of Technology, (4) BP, Naperville, IL 60563-7011

Copper supported on TiO2 nanotubes has been prepared and used as support for metal oxides as catalysts in the preferential oxidation of CO (PROX). In-situ and operando characterization of these materials is also discussed. Activity results showed that close to 80% CO conversion can be achieved on these catalysts. XANES/EXAFS characterization results showed that the oxidation state of the supported copper varies with the reaction conditions following and approximate rate of r=k[Cu+2][Cu+1]-1.