Preparation of Au-CeZr/FAU Catalytic Membranes for Preferential Oxidation of CO in H2-rich Stream

被引：0
|
作者：
Wei, Lina [1 ]
Li, Peng [1 ]
Feng, Zhu [1 ]
Gu, Pengfei [1 ]
Gu, Xuehong [1 ]
机构：
[1] Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Chem Engn, Nanjing 211816, Peoples R China
来源：
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2022年 / 43卷 / 10期
基金：
中国国家自然科学基金;
关键词：
CO preferential oxidation; Zeolite; Catalytic membrane; LOW-TEMPERATURE; SURFACE-ACIDITY; GOLD CATALYSTS; SUPPORTED GOLD; ACTIVE-SITES; HYDROGEN; WATER; ZEOLITE; COMBUSTION; REDUCTION;
D O I：
10.7503/cjcu20220175
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of CeZr/FAU zeolite membranes with different Ce/Zr doping ratios was prepared by impregnation method,and further loaded with nano-gold to prepare Au-CeZr/FAU catalytic membranes. The obtained membranes were well characterized,and their catalytic performances toward the preferential oxidation of CO in H-2-rich gases were studied. The H-2-TPR analysis showed that the Au-Ce1Zr1/FAU membrane with Ce/Zr doping ratio of 1:1 had the best redox ability,which benefited the dispersion and reduction of Au nanoparticles. The O-2-TPD analysis suggested that this membrane also possessed more active oxygen species. As a result,the Au-Ce1Zr1/FAU catalytic membrane exhibited the best catalytic activity for CO-PROX reaction with 100% O-2 conversion and 100% O-2 selectivity at low temperature of 60 degrees C as well as high stability for 10 thermal cycling tests.
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页数：8
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