CuO and CeO2 catalysts supported on Al2O3, ZrO2, and SiO2 in the oxidation of CO at low temperature

被引：148

作者：

Aguila, Gonzalo ^{[1
]}

Gracia, Francisco ^{[1
]}

Araya, Paulo ^{[1
]}

机构：

[1] Univ Chile, Dept Ingn Quim & Biotecnol, Ctr Invest Interdisciplinaria Avanzada Ciencias M, Santiago 2777, Chile

来源：

APPLIED CATALYSIS A-GENERAL | 2008年 / 343卷 / 1-2期

关键词：

Al2O3; SiO2; ZrO2; copper; CeO2; CO oxidation;

D O I：

10.1016/j.apcata.2008.03.015

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 effect of the support, Al2O3, ZrO2, and SiO2, on the activity for CO oxidation of a series of CuO and CeO2 monometallic and bimetallic catalysts was studied. The catalysts were prepared by coimpregnation of the support with the adequate amount of Cu and Ce nitrates to obtain a loading of 2% Cu and/or 8% Ce. It was found that the support has a strong influence on the activity of the different bimetallic catalysts. Interestingly, the SiO2 supported catalyst shows the higher activity. The bimetallic supported catalysts follow the activity sequence CuO-CeO2/SiO2 > CuO-CeO2/ZrO2 > CuO-CeO2/Al2O3. In the absence of CeO2, the most active monometallic catalyst was the CuO/ZrO2 system. The different degree of interaction between CuO and CeO2 particles, induced by the support, can explain the activity results for the bimetallic catalysts. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：16 / 24

页数：9

共 57 条

[1] Improvement of the thermal stability of hydrous zirconia by post-synthesis treatment with NaOH and NH4OH solutions
Aguila, G.
Guerrero, S.
Gracia, F.
Araya, P.
[J]. APPLIED CATALYSIS A-GENERAL, 2006, 305 (02) : 219 - 232
[2] Effect of copper species and the presence of reaction products on the activity of methane oxidation on supported CuO catalysts
Aguila, Gonzalo
Gracia, Francisco
Cortes, Joaquin
Araya, Paulo
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 77 (3-4) : 325 - 338
[3] Selective CO oxidation over CuO-CeO2 catalysts prepared via the urea-nitrate combustion method
Avgouropoulos, G
Ioannides, T
[J]. APPLIED CATALYSIS A-GENERAL, 2003, 244 (01) : 155 - 167
[4] A comparative study of Pt/γ-Al2O3, Au/α-Fe2O3 and CuO-CeO2 catalysts for the selective oxidation of carbon monoxide in excess hydrogen
Avgouropoulos, G
Ioannides, T
Papadopoulou, C
Batista, J
Hocevar, S
Matralis, HK
[J]. CATALYSIS TODAY, 2002, 75 (1-4) : 157 - 167
[5] Selective low-temperature removal of carbon monoxide from hydrogen-rich fuels over Cu-Ce-Al catalysts
Cheekatamarla, PK
Epling, WS
Lane, AM
[J]. JOURNAL OF POWER SOURCES, 2005, 147 (1-2) : 178 - 183
[6] Yttria-stabilized zirconia supported copper oxide catalyst .2. Effect of oxygen vacancy of support on catalytic activity for CO oxidation
Dow, WP
Huang, TJ
[J]. JOURNAL OF CATALYSIS, 1996, 160 (02) : 171 - 182
[7] EFFECTS OF OXYGEN VACANCY OF YTTRIA-STABILIZED ZIRCONIA SUPPORT ON CARBON-MONOXIDE OXIDATION OVER COPPER CATALYST
DOW, WP
HUANG, TJ
[J]. JOURNAL OF CATALYSIS, 1994, 147 (01) : 322 - 332
[8] Modification of the redox behaviour of CeO2 induced by structural doping with ZrO2
Fornasiero, P
Balducci, G
DiMonte, R
Kaspar, J
Sergo, V
Gubitosa, G
Ferrero, A
Graziani, M
[J]. JOURNAL OF CATALYSIS, 1996, 164 (01) : 173 - 183
[9] Activity and characterization by XPS, HR-TEM, Raman spectroscopy, and BET surface area of CuO/CeO2-TiO2 catalysts
Francisco, MSP
Mastelaro, VR
Nascente, PAP
Florentino, AO
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (43) : 10515 - 10522
[10] CHARACTERIZATION OF CU-AL2O3 CATALYSTS
FRIEDMAN, RM
FREEMAN, JJ
LYTLE, FW
[J]. JOURNAL OF CATALYSIS, 1978, 55 (01) : 10 - 28

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