Pretreatment effect on copper-titanium dioxide catalysts in CO oxidation

被引：6

作者：

Cao, Guoqiang ^{[1
]}

Yi, Nan ^{[1
]}

机构：

[1] Univ New Hampshire, Dept Chem Engn, Durham, NH 03824 USA

来源：

CATALYSIS COMMUNICATIONS | 2022年 / 170卷

关键词：

Pretreatment; Copper; Titanium dioxide; CO oxidation; CARBON-MONOXIDE OXIDATION; TEMPERATURE; OXIDE; REDUCTION; NO;

D O I：

10.1016/j.catcom.2022.106484

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：

Copper-titanium dioxide (Cu-TiO2) catalysts are pretreated with hydrogen-helium and oxygen-helium before evaluation of the carbon monoxide oxidation. Pre-reduced Cu-TiO2 catalysts showed higher initial and overall activity than pre-oxidized Cu-TiO2 catalysts. H2-TPR results revealed that copper species are dispersed differently after pre-reduction and pre-oxidation treatments. XPS results confirmed that Cu+ and Cu2+ species exist for both treatments. Meanwhile, IR results suggested Cu+ species promote the absorption of CO, leading to increased reaction rates.

引用

页数：5

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