Novel Au/TiO2/Al2O3 · xH2O catalysts for CO oxidation

被引：0
作者：
Wen Fu Yan
Zhen Ma
Shannon M. Mahurin
Jian Jiao
Edward W. Hagaman
Steven H. Overbury
Sheng Dai
机构：
[1] Oak Ridge National Laboratory,Chemical Sciences Division
[2] Jilin University,State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry
来源：
Catalysis Letters | 2008年 / 121卷
关键词：
Gold catalysts; Nanoparticles; TiO; Al; O; CO oxidation; Activity; Promotion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Au/Al2O3 · xH2O and Au/TiO2/Al2O3 · xH2O (x = 0–3) catalysts were prepared by assembling gold nanoparticles on neat and TiO2-modified Al2O3, AlOOH, and Al(OH)3 supports, and their catalytic activity in CO oxidation was tested either as synthesized or after on-line pretreatment in O2–He at 500 °C. A promotional effect of TiO2 on the activity of gold catalysts was observed upon 500 °C-pretreatment. The catalyst stability as a function of time on stream was tested in the absence or presence of H2, and physiochemical characterization applying BET, ICP-OES, XRD, TEM, and 27Al MAS NMR was conducted.
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页码：209 / 218
页数：9
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