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Low‐Temperature Preferential Oxidation of Carbon Monoxide on Pt 3 Ni Alloy Nanoparticle Catalyst with Engineered Surface
Author(s) -
Hwang Sang Youp,
Yurchekfrodl Eric,
Zhang Changlin,
Peng Zhenmeng
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201500783
Subject(s) - bifunctional , alloy , prox , catalysis , carbon monoxide , selectivity , octahedron , nanoparticle , materials science , inorganic chemistry , chemistry , chemical engineering , crystallography , nanotechnology , metallurgy , crystal structure , organic chemistry , engineering
Octahedral Pt 3 Ni alloy nanoparticles on carbon and alumina supports are prepared using a simple solid‐state chemistry method and tested for CO preferential oxidation (PROX) in H 2 . Both catalysts exhibit much superior PROX property comparing to spherical Pt 3 Ni alloy and pure Pt, with high activity and 100 % selectivity between around RT and 100 °C. The improved activity of the octahedral Pt 3 Ni has been attributed to bifunctional sites mechanism. The excellent selectivity is correlated with the unique surface geometry and electronic structure of the octahedral Pt 3 Ni.