Hydrogen production by catalytic decomposition of methane over activated carbons: kinetic study

被引:183
作者
Kim, MH
Lee, EK
Jun, JH
Kong, SJ
Han, GY
Lee, BK
Lee, TJ
Yoon, KJ [1 ]
机构
[1] Sungkyunkwan Univ, Dept Chem Engn, Suwon 440746, South Korea
[2] Korea Inst Sci & Technol, CFC Alternat Res Ctr, Seoul 136791, South Korea
[3] Yeungnam Univ, Sch Chem Engn & Technol, Kyongsan 712749, South Korea
关键词
activated carbon; ash; deactivation; hydrogen; kinetic parameters; mass transport effect; methane decomposition;
D O I
10.1016/S0360-3199(03)00111-3
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
Several domestic activated carbons were tested as the catalyst for decomposition of methane. All the activated carbons showed similar deactivation pattern. Mass transport effect in the catalyst particles was observed and the pore mouth blocking appeared to occur noticeably especially in large particles. Between different kinds of the activated carbons, no discernible trend was observed between the initial activity and the surface area, and the initial activities lay in a relatively narrow range. The reaction orders were 0.5 and the same for different samples of the activated carbon. The activation energies were also about the same, ca. 200 kJ/mol, regardless of the kind and suppliers. These results indicate that the reaction mechanism is the same for all the activated carbons. Ashes in the activated carbons do little affect the catalytic activity. (C) 2003 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:187 / 193
页数:7
相关论文
共 17 条
[1]   Hydrogen production via the direct cracking of methane over Ni/SiO2:: catalyst deactivation and regeneration [J].
Aiello, R ;
Fiscus, JE ;
zur Loye, HC ;
Amiridis, MD .
APPLIED CATALYSIS A-GENERAL, 2000, 192 (02) :227-234
[2]   INSITU ELECTRON-MICROSCOPY STUDIES OF CATALYST PARTICLE BEHAVIOR [J].
BAKER, RTK .
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1979, 19 (02) :161-209
[3]  
Butt JB., 1980, Reaction Kinetics and Reactor Design
[4]  
DAHL J, 2002, 11 SOL PACES INT S C, P223
[5]   FROM METHANE TO HYDROGEN, CARBON-BLACK AND WATER [J].
FULCHERI, L ;
SCHWOB, Y .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1995, 20 (03) :197-202
[6]   Hydrogen from natural gas without release of CO2 to the atmosphere [J].
Gaudernack, B ;
Lynum, S .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1998, 23 (12) :1087-1093
[7]   Hydrogen via methane decomposition: an application for decarbonization of fossil fuels [J].
Muradov, N .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2001, 26 (11) :1165-1175
[8]  
MURADOV N, 2000, P 13 WORLD HYDR EN C, V1, P428
[9]  
MURADOV N, 2002, P 2002 US DOE HYDR R, P227
[10]  
MURADOV N, 2000, UNPUB COMMUNICATION