Active sites over CuO/CeO2 and inverse CeO2/CuO catalysts for preferential CO oxidation

被引：92

作者：

Zeng, Shanghong ^{[1
,2
]}

Wang, Yan ^{[1
]}

Ding, Suping ^{[1
]}

Sattler, Jesper J. H. B. ^{[2
]}

Borodina, Elena ^{[2
]}

Zhang, Lu ^{[1
]}

Weckhuysen, Bert M. ^{[2
]}

Su, Haiquan ^{[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] Univ Utrecht, Debye Inst Nanomat Sci, Inorgan Chem & Catalysis Grp, NL-3584 CA Utrecht, Netherlands

来源：

JOURNAL OF POWER SOURCES | 2014年 / 256卷

基金：

中国国家自然科学基金;

关键词：

Copper-ceria catalysts; Hydrogen; Active site; Preferential CO oxidation; AREA CUO-CEO2 CATALYSTS; OXIDE COMPOSITE CATALYSTS; CARBON-MONOXIDE OXIDATION; SURFACE-AREA; SELECTIVE OXIDATION; IN-SITU; CUO; CERIA; GAS; TEMPERATURE;

D O I：

10.1016/j.jpowsour.2014.01.098

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：

A series of CuO/CeO2 and inverse CeO2/CuO catalysts are prepared by the surfactant-templated method and characterized via XRD, HRTEM, H-2-TPR, SEM, XPS, in situ XRD, in situ UV-Vis and N-2 adsorption-desorption techniques. It is found that there are two kinds of surface sites in the CuO-CeO2 system, including CuO surface sites for CO chemisorption and CeO2 surface sites with oxygen vacancies for oxygen sorption. The active sites for CO oxidation are located on the contact interface of two-kind surface Sites and the lattice oxygen can make a significant contribution to the CO-PROX reaction. The resistance to H2O and CO2 is related to BET surface area, the crystallite sizes of CuO and the reduction behavior of catalysts. The Ce4Cu4 and Ce4Cu1 catalysts exhibit the best resistance against H2O and CO2. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：301 / 311

页数：11

共 50 条

[1] Comparative study of CeO2/CuO and CuO/CeO2 catalysts on catalytic performance for preferential CO oxidation
Zeng, Shanghong
Zhang, Wenli
Sliwa, Michal
Su, Haiquan
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2013, 38 (09) : 3597 - 3605
[2] Preferential Oxidation of CO in H2 over CuO/CeO2 Catalysts
刘源
王小燕
白雪
JournalofRareEarths, 2005, (01) : 41 - 46
[3] Preferential oxidation of CO in H2 over CuO/CeO2 catalysts
Liu, Y
Wang, XY
Bai, X
JOURNAL OF RARE EARTHS, 2005, 23 (01) : 41 - 46
[4] Inverse CeO2/CuO Catalysts Prepared by Hydrothermal Method for Preferential CO Oxidation
Shanghong Zeng
Wenli Zhang
Na Liu
Haiquan Su
Catalysis Letters, 2013, 143 : 1018 - 1024
[5] Inverse CeO2/CuO Catalysts Prepared by Hydrothermal Method for Preferential CO Oxidation
Zeng, Shanghong
Zhang, Wenli
Liu, Na
Su, Haiquan
CATALYSIS LETTERS, 2013, 143 (10) : 1018 - 1024
[6] Mechanism of CO oxidation over CuO/CeO2 catalysts
Moreno, Maiximo
Bergamini, Lorena
Baronetti, Graciela T.
Laborde, Miguel A.
Marino, Fernando J.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (11) : 5918 - 5924
[7] Role of Two-Electron Defects on the CeO2 Surface in CO Preferential Oxidation over CuO/CeO2 Catalysts
Xia, Yang
Lao, Jiazheng
Ye, Jingrui
Cheng, Dang-Guo
Chen, Fengqiu
Zhan, Xiaoli
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2019, 7 (22) : 18421 - +
[8] Promotion effect of metal oxides on inverse CeO2/CuO catalysts for preferential oxidation of CO
Zeng, Shanghong
Chen, Tianjia
Liu, Kewei
Su, Haiquan
CATALYSIS COMMUNICATIONS, 2014, 45 : 16 - 20
[9] New Approach to Synthesis of CuO/CeO2 Catalysts for Preferential CO Oxidation
Wang, Shuhua
Xu, Li
Shen, Pan
Chen, Chao
Zhang, Ning
MECHANICAL SCIENCE AND ENGINEERING IV, 2014, 472 : 666 - 670
[10] Role of CO2 on CO preferential oxidation over CuO/CeO2 catalyst
Di Benedetto, A.
Landi, G.
Lisi, L.
Russo, G.
APPLIED CATALYSIS B-ENVIRONMENTAL, 2013, 142 : 169 - 177

← 1 2 3 4 5 →