Copper manganite as a catalyst for the PROX reaction. Deactivation studies

被引：25

作者：

Valdes-Solis, Teresa ^{[1
]}

Lopez, Irene ^{[1
]}

Marban, Gregorio ^{[1
]}

机构：

[1] INCAR CSIC, Inst Nacl Carbon, Oviedo 33011, Spain

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 05期

关键词：

Preferential oxidation; CO; Hydrogen; CuMn(2)O(4); Deactivation; AQUAGEL-CONFINED COPRECIPITATION; RAY PHOTOELECTRON-SPECTROSCOPY; CERIA-SUPPORTED CATALYSTS; PREFERENTIAL CO OXIDATION; CARBON-MONOXIDE; METHANOL SYNTHESIS; OXIDE CATALYSTS; HYDROGEN PROX; MIXED OXIDES; TEMPERATURE;

D O I：

10.1016/j.ijhydene.2009.12.117

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：

CuMn(2)O(4) nanocatalysts synthesised by silica aquagel confined co-precipitation were analysed for the preferential oxidation of CO at different temperatures and concentration conditions The catalysts show a higher activity than copper-ceria catalysts synthesised by the same method but, like these, they suffer from slow deactivation during the reaction. Surface analysis (FTIR and XPS) was used to unravel the deactivation mechanisms Gradual reduction of the catalysts by the carbon monoxide present in the PROX stream was concluded to be the main cause of deactivation (C) 2009 Professor T Nejat Veziroglu Published by Elsevier Ltd. All rights reserved

引用

页码：1879 / 1887

页数：9

共 39 条

[1] A STUDY OF A NUMBER OF MIXED TRANSITION-METAL OXIDE SPINELS USING X-RAY PHOTOELECTRON-SPECTROSCOPY [J].

ALLEN, GC ;

HARRIS, SJ ;

JUTSON, JA ;

DYKE, JM .

APPLIED SURFACE SCIENCE, 1989, 37 (01) :111-134

[2] X-RAY PHOTOELECTRON-SPECTROSCOPY STUDY OF THE IONIC CONFIGURATION OF THE SPINEL CUMNCOO4 [J].

BRABERS, VAM ;

VANSETTEN, F .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1983, 16 (09) :L169-L172

[3] A spillover approach to oxidation catalysis over copper and manganese mixed oxides [J].

Buciuman, FC ;

Patcas, F ;

Hahn, T .

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 1999, 38 (4-6) :563-569

[4] XPS studies of Cu/ZnO/Al2O3 ultra-fine catalysts derived by a novel gel oxalate co-precipitation for methanol synthesis by CO2+H2 [J].

Dai, WL ;

Sun, Q ;

Deng, JF ;

Wu, D ;

Sun, YH .

APPLIED SURFACE SCIENCE, 2001, 177 (03) :172-179

[5]

DOLLIMOR D, 1970, J CHEM SOC A

[6] Spinel-type oxide catalysts for low temperature CO oxidation generated by use of an ultrasonic aerosol pyrolysis process [J].

Fortunato, G ;

Oswald, HR ;

Reller, A .

JOURNAL OF MATERIALS CHEMISTRY, 2001, 11 (03) :905-911

[7] Thermal stability of azurite and malachite in relation to the formation of mediaeval glass and glazes [J].

Frost, RL ;

Ding, Z ;

Kloprogge, JT ;

Martens, WN .

THERMOCHIMICA ACTA, 2002, 390 (1-2) :133-144

[8] Catalytic processes during preferential oxidation of CO in H2-rich streams over catalysts based on copper-ceria [J].

Gamarra, D. ;

Hornes, A. ;

Koppany, Zs. ;

Schay, Z. ;

Munuera, G. ;

Soria, J. ;

Martinez-Arias, A. .

JOURNAL OF POWER SOURCES, 2007, 169 (01) :110-116

[9] Oxidation mechanism and valence states of copper and manganese in tetragonal CuMn2O4 [J].

Gillot, B ;

Buguet, S ;

Kester, E .

JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (12) :2513-2517

[10] Comparative study of CuO-CeO2 catalysts prepared by wet impregnation and deposition-precipitation [J].

Gurbani, A. ;

Ayastuy, J. L. ;

Gonzalez-Marcos, M. P. ;

Herrero, J. E. ;

Guil, J. M. ;

Gutierrez-Ortiz, M. A. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (01) :547-553

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