Promoting mechanism of potassium in preferential CO oxidation on Pt/Al2O3

被引：97
作者：
Kuriyama, Masatoshi
Tanaka, Hisanori
Ito, Shin-ichi
Kubota, Takeshi
Miyao, Toshihiro
Naito, Shuichi
Tomishige, Keiichi
Kunimori, Kimio
机构：
[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan
[2] Shimane Univ, Dept Mat Sci, Matsue, Shimane 6908504, Japan
[3] Kanagawa Univ, Fac Engn, Dept Appl Chem, Kanagawa Ku, Kanagawa 2218686, Japan
来源：
JOURNAL OF CATALYSIS | 2007年 / 252卷 / 01期
关键词：
preferential CO oxidation; platinum; Al2O3; potassium;
D O I：
10.1016/j.jcat.2007.09.001
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The addition of potassium enhanced the activity of preferential CO oxidation on Pt/Al2O3. The additive effect of potassium weakened the interaction between CO and Pt, and also changed the CO adsorption site. FTIR observations under the PROX conditions suggested the presence of adsorbed species derived from O-2 and H-2 such as OH species, which can be related to the promoting effect of H-2 present in the PROX reaction. (c) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码：39 / 48
页数：10
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