Al2O3-TiO2 sol-gel mixed oxides as suitable supports for the reduction of NO by CO

被引：12
|
作者：
Morán-Pineda, M
Castillo, S
Asomoza, M
Gómez, R
机构：
[1] Inst Mexicano Petr, Mexico City 07730, DF, Mexico
[2] Inst Politecn Nacl, Unidad Profes Adolfo Lopez Mateos, Mexico City 07738, DF, Mexico
[3] Univ Autonoma Metropolitana Iztapalapa, Dept Chem, Mexico City 09340, DF, Mexico
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 2002年 / 76卷 / 01期
关键词：
copper/alumina-titania catalysts; alumina-titania supports; NO reduction by CO; alumina-titania sol-gel supports;
D O I：
10.1023/A:1015665428233
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：
Sol-gel alumina-titania supports were prepared by the co-gelling aluminum tri-sec-butoxide and titanium isopropoxide (10 wt.% TiO2) at pH 3 and pH 9. Supports showed specific surface areas higher than 250 m(2)/g, and Lewis acidity was observed by FTIR pyridine adsorption. Cudegrees, Cu1+ and Cu2+ species on impregnated Cu/Al2O3-TiO2 catalysts were identified by means of FTIR-CO adsorption. A correlation between Cu+/Cu2+ abundance and the activity for NO reduction by CO is reported.
引用
收藏
页码：75 / 81
页数：7
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