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
收藏
页码：3163 / 3172
页数：10
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