Evidence of cationic Pt active for water-gas shift reaction: Pt-doped BaCeO3 perovskite

TitleEvidence of cationic Pt active for water-gas shift reaction: Pt-doped BaCeO3 perovskite
Publication TypeJournal Article
Year of Publication2012
AuthorsRajesh, T, Rajarajan, AK, Gopinath, CS, R. Devi, N
JournalJournal of Physical Chemistry C
Volume116
Issue17
Pagination9526-9532
Date PublishedMAY
ISSN1932-7447
Abstract

Precious metal incorporated into stable lattices like perovskites can be envisaged as an alternative catalysts to address deactivation problems. Here we report the barium cerate perovskite doped with varying amounts of Pt as catalysts for the water-gas shift reaction whereby ionic Pt is evidenced to be active. It is found that maximum CO conversion occurs above 325 degrees C and increases more than 2-fold after the first cycle. XPS analysis shows that after the first cycle, more ionic Pt species are present on the surface of the catalyst. X-ray and neutron diffraction studies also indicate the presence of oxygen vacancies that increases with increasing Pt substitution.

DOI10.1021/jp212211d
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)4.814
Divison category: 
Catalysis and Inorganic Chemistry