Preparation, characterization and catalytic properties of Pd-Fe-zeolite and Pd-Ce-zeolite composite catalysts

被引：27

作者：

Bi, Yu-Shui ^{[1
]}

Dang, Guang-Yao ^{[1
]}

Zhao, Xiao-Hong ^{[1
]}

Meng, Xian-Feng ^{[1
]}

Lu, Hui-Jie ^{[1
]}

Jin, Jian-Tao ^{[1
]}

机构：

[1] Taishan Med Univ, Dept Chem Engn, Tai An 271016, Shandong, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2012年 / 229卷

关键词：

Heterogeneous catalysis; Active site; CO removal; Electro-oxidation; CO OXIDATION; CARBON-MONOXIDE; ELECTROOXIDATION; NANOPARTICLES; TEMPERATURE; COMBUSTION; PARTICLES; OXIDES;

D O I：

10.1016/j.jhazmat.2012.05.101

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Highly effective composite catalysts for removal of CO by catalytic oxidation have been designed through constructing active centers on the support of zeolite. Performances of the derived Pd-Fe-zeolite and Pd-Ce-zeolite composite catalysts for CO removal under different heterogeneous conditions were studied. The results indicate that the two kinds of promoted catalysts, including special chemical states of Pd and surface active oxygen, show high catalytic activities not only for the low temperature oxidation of CO, but also for CO electro-oxidation. The typical light-off temperatures of Pd-Fe-zeolite and Pd-Ce-zeolite for low temperature CO oxidation are 270 and 273 K. Their characteristic peak potentials for CO electro-oxidation are both around 0.70 V. The promotional effects are associated with the special interaction among Pd, modifier and zeolite, which can be firmly supported by the detailed characterizations using XRD, BET, XPS, TPD and TPR. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：245 / 250

页数：6

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