Pure H2 production by decomposition of methane over Ni supported on hydroxyapatite catalysts

被引：40
|
作者：
Ashok, J. [1 ]
Naveen Kumar, S. [1 ]
Subrahmanyam, M. [1 ]
Venugopal, A. [1 ]
机构：
[1] Indian Inst Chem Technol, Catal & Phys Chem Div, Hyderabad 500007, Andhra Pradesh, India
来源：
CATALYSIS LETTERS | 2008年 / 121卷 / 3-4期
关键词：
hydroxyapatite; methane decomposition; hydrogen production; carbon filaments; Ni metal area;
D O I：
10.1007/s10562-007-9334-z
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 catalytic decomposition of CH4 for the production of pure H-2 is carried out over Ni supported on hydroxyapatite [Ca-5(PO4)(3)(OH)] catalysts at 650 degrees C and atmospheric pressure. CH4 decomposition activity is decreased with time on stream and finally deactivated completely. The physicochemical properties of the fresh catalysts are characterized by XRD, DTA/TG, TPR and SEM techniques along with CHNS analyses of the used samples. It is found that the 30 wt% Ni/HAp displayed higher H-2 production rates over the other Ni loadings, which is correlated with Ni metal surface area measured by O-2 pulse chemisorption.
引用
收藏
页码：283 / 290
页数：8
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