Methane decomposition on Ni-Cu alloyed Raney-type catalysts

被引：94
作者：
Cunha, A. F. [1 ]
Orfao, J. J. M. [1 ]
Figueiredo, J. L. [1 ]
机构：
[1] Univ Porto, Lab Catalise & Mat, Lab Associado LSRE LCM, Dept Engn Quim,Fac Engn, P-4200465 Oporto, Portugal
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 11期
关键词：
Ni-Cu incipient alloying; Raney-type catalysts; Hydrogen production; Methane decomposition; Carbon nanofibers; Carbon nanotubes; MG-AL CATALYSTS; CARBON NANOFIBERS; HYDROGEN-PRODUCTION; COPPER-NICKEL; THERMAL-DECOMPOSITION; ALUMINA CATALYSTS; DEPOSITION; DEACTIVATION; TEMPERATURE; HYDROCARBON;
D O I：
10.1016/j.ijhydene.2009.03.040
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：
In the present work, we report on the performance of Ni-Cu alloyed Raney-type catalysts for the production of hydrogen by catalytic methane decomposition. The activity of the catalysts was assessed by comparing the experimental conversions with the calculated equilibrium conversions for each set of experimental conditions. The stability of the catalysts was assessed by comparing the maximum conversions with the conversions at the end of 5 h tests. Comparison with monometallic Ni Raney-type catalytic systems shows that Cu addition significantly improves catalyst stability. Excellent results were obtained when the Ni-Cu Raney-type system was thermally treated in situ at 600 degrees C, as a result of incipient alloy formation. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：4763 / 4772
页数：10
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