Yttria-stabilized zirconia supported platinum catalysts (Pt/YSZs) for CH4/CO2 reforming

被引：40
作者：
Chen, YZ [1 ]
Liaw, BJ
Kao, CF
Kuo, JC
机构：
[1] Natl Cent Univ, Dept Chem Engn, Chungli 32054, Taiwan
[2] Nanya Inst Technol, Dept Chem Engn, Chungli 32049, Taiwan
来源：
APPLIED CATALYSIS A-GENERAL | 2001年 / 217卷 / 1-2期
关键词：
Pt/YSZ; yttria-stabilized zirconia; CH4/CO2; reforming; TPR; pulsing test;
D O I：
10.1016/S0926-860X(01)00592-0
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：
Yttria-stabilized zirconia (YSZs) samples with various amounts of yttrium were prepared, characterized, and used as supports for preparing Pt/YSZ catalysts. CH4/CO2 reforming over the Pt/YSZ catalysts was examined and compared with the results over Pt/Al2O3 and Pt/SiO2 catalysts. Analysis of TPR revealed that the reduction temperature range of the Pt/YSZ catalysts was much lower than that of the Pt/Al2O3 and Pt/SiO2 catalysts. For CH4/CO2 reforming at 600 degreesC, the Pt/YSZ catalysts showed a higher steady state conversion and significantly better stability than the Pt/Al2O3 and Pt/SiO2 catalysts. These results were attributed to the enhancing of adsorption, activation and dissociation of CO2 on the YSZ. The optimum dosage of yttrium in YSZ for the CH4/CO2 reforming reaction was 9.8 mol% (Y/(Zr + Y)). Additionally, YSZ(9.8) could be homogeneously spread on the SiO2 and was more stable than the YSZ(9.8) for the CH4/CO2 reforming at temperatures above 700 degreesC. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：23 / 31
页数：9
相关论文
共 32 条
[1]   PARTIAL OXIDATION OF METHANE TO SYNTHESIS GAS-USING CARBON-DIOXIDE [J].
ASHCROFT, AT ;
CHEETHAM, AK ;
GREEN, MLH ;
VERNON, PDF .
NATURE, 1991, 352 (6332) :225-226
[2]   The state of zirconia supported platinum catalysts for CO2/CH4 reforming [J].
Bitter, JH ;
Seshan, K ;
Lercher, JA .
JOURNAL OF CATALYSIS, 1997, 171 (01) :279-286
[3]   The role of the oxidic support on the deactivation of Pt catalysts during the CO2 reforming of methane [J].
Bitter, JH ;
Hally, W ;
Seshan, K ;
vanOmmen, JG ;
Lercher, JA .
CATALYSIS TODAY, 1996, 29 (1-4) :349-353
[4]   STABILIZATION OF PLATINUM ON SILICA PROMOTED WITH LANTHANUM OXIDE AND ZIRCONIUM-OXIDE [J].
DEEBA, M ;
FARRAUTO, RJ ;
LUI, YK .
APPLIED CATALYSIS A-GENERAL, 1995, 124 (02) :339-344
[5]   EFFECTS OF OXYGEN VACANCY OF YTTRIA-STABILIZED ZIRCONIA SUPPORT ON CARBON-MONOXIDE OXIDATION OVER COPPER CATALYST [J].
DOW, WP ;
HUANG, TJ .
JOURNAL OF CATALYSIS, 1994, 147 (01) :322-332
[6]   Yttria-stabilized zirconia supported copper oxide catalyst .1. Effect of oxygen vacancy of support on copper oxide reduction [J].
Dow, WP ;
Wang, YP ;
Huang, TJ .
JOURNAL OF CATALYSIS, 1996, 160 (02) :155-170
[7]   THE CHEMISTRY OF METHANE REFORMING WITH CARBON-DIOXIDE AND ITS CURRENT AND POTENTIAL APPLICATIONS [J].
EDWARDS, JH ;
MAITRA, AM .
FUEL PROCESSING TECHNOLOGY, 1995, 42 (2-3) :269-289
[8]   CATALYTIC REACTION OF METHANE WITH CARBON-DIOXIDE OVER SUPPORTED PALLADIUM [J].
ERDOHELYI, A ;
CSERENYI, J ;
PAPP, E ;
SOLYMOSI, F .
APPLIED CATALYSIS A-GENERAL, 1994, 108 (02) :205-219
[9]   ACTIVATION OF CH4 AND ITS REACTION WITH CO2 OVER SUPPORTED RH CATALYSTS [J].
ERDOHELYI, A ;
CSERENYI, J ;
SOLYMOSI, F .
JOURNAL OF CATALYSIS, 1993, 141 (01) :287-299
[10]   ELECTRICAL PROPERTIES OF SOLID OXIDE ELECTROLYTES [J].
ETSELL, TH ;
FLENGAS, SN .
CHEMICAL REVIEWS, 1970, 70 (03) :339-&
1234