Promotion of Ag for Co3O4 catalyzing N2O decomposition under simulated real reaction conditions

被引：52

作者：

Yu, Haibiao ^{[1
]}

Wang, Xinping ^{[1
]}

Wu, Xingxing ^{[1
]}

Chen, Yong ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Environm Sci & Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2018年 / 334卷

基金：

中国国家自然科学基金;

关键词：

Ag; Co3O4; N2O decomposition; Activation energy; Impurity gases; CATALYTIC DECOMPOSITION; OXIDE CATALYSTS; PERFORMANCE; PRECURSOR; OXYGEN; CERIA;

D O I：

10.1016/j.cej.2017.10.079

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Series of AgxCo (x = 0 similar to 0.08) oxide catalysts prepared by coprecipitation (CP) was investigated in the N2O decomposition. The addition of Ag into cobalt oxide significantly enhanced the activity of the catalyst by both greatly decreasing the average size of the Co3O4 crystallites and significantly weakening the Co-O bond. Due to the function of Ag weakening the Co-O bond, the oxygen vacancies regeneration over the catalyst surface was significantly facilitated under the reaction conditions, which endows the Ag0.04Co(CP) catalyst a much lower activation energy compared with the cobalt oxide for the reaction. Moreover, the Ag0.04Co(CP) catalyst exhibited much stable activity under the presence of 5 vol% O-2, 2 vol% H2O and 100 ppmv NO, which is better than that of K doped cobalt oxide reported in literature.

引用

页码：800 / 806

页数：7

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