Inverse CeO2/CuO catalysts prepared by different precipitants for preferential CO oxidation in hydrogen-rich streams

被引：12

作者：

Zeng, Shanghong ^{[1
]}

Wang, Yan ^{[1
]}

Qin, Bin ^{[2
]}

Gu, Xiaojun ^{[1
]}

Su, Haiquan ^{[1
]}

Li, Long ^{[1
]}

Liu, Kewei ^{[1
]}

机构：

[1] Inner Mongolia Univ, Sch Chem & Chem Engn, Inner Mongolia Key Lab Chem & Phys Rare Earth Mat, Hohhot 010021, Peoples R China

[2] Petrochina Hohhot Petrochem Co, Hohhot 010070, Peoples R China

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2013年 / 3卷 / 12期

基金：

中国国家自然科学基金;

关键词：

CUO-CEO2; CATALYSTS; CUO/CEO2; TEMPERATURE; PERFORMANCE; COMBUSTION; CERIA;

D O I：

10.1039/c3cy00478c

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：

The inverse CeO2/CuO catalysts were prepared by different precipitants, and characterized via XRD, ICP, SEM, H-2-TP Raman, TEM and N-2 adsorption-desorption techniques. The study showed that the inverse CeO2/CuO configurations were formed and copper is mainly present in the form of bulk CuO in the as-synthesized catalysts. It was found that the length of the contact interface between CeO2 and CuO was closely associated with the crystal size of CeO2 and CuO. The CeO2/CuO catalysts using urea, NaOH and TMAH (tetramethylammonium hydroxide) as precipitants presented a better catalytic performance for CO oxidation below 185 degrees C in the hydrogen-rich streams due to some amount of copper-ceria interfacial sites in the catalysts.

引用

页码：3163 / 3172

页数：10

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