Abstract: Changes in Au species and Ce3+/Ce4+ ratio during deactivation of Au/CeO2 PROX catalysts (22nd North American Catalysis Society Meeting)

Tuesday, June 7, 2011: 5:00 PM

Cabot Ballroom (Detroit Marriott Hotel at the Renaissance Center )

Jose A. Hernandez¹, Sergio A. Gomez¹, Trino A. Zepeda² and Gustavo A. Fuentes³, (1)Department of Process Engineering, Univeridad A. Metropolitana - Iztapalapa, Mexico DF, Mexico, (2)Centro de Nanociencias y Nanotecnologia, UNAM, Ensenada BCN, Mexico, (3)Department of Process Engineering,, Universidad Autonoma Metropolitana-Iztapalapa, Mexico City, Mexico

We show that both Au nanoparticles and Au cationic species are present on Au/CeO₂, their ratio evolving during operation. Deactivation of Au/CeO₂ occurs by the fast reduction of Au species, oxidation of the support, and slower sintering of Au nanoparticles

Extended Abstracts:

Hernandez _ Au_Ceria-PROX Deactivation.pdf (141.9KB) - Extended Abstract

See more of: H2 Generation (IV): Syngas Production
See more of: Catalysis, Materials, and Reaction Engineering for Fuel Production/Utilization

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OA32 Changes in Au species and Ce3+/Ce4+ ratio during deactivation of Au/CeO2 PROX catalysts