期刊
APPLIED SURFACE SCIENCE
卷 356, 期 -, 页码 1320-1326出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.08.246
关键词
Hydrogen; Methane decomposition; Magnesium aluminate; Palladium; Multiwalled carbon nanotubes
类别
资金
- Universiti Kebangsaan Malaysia - Yayasan Sime Darby (YSD) [PKT 6/2012, KK-2014-014]
This article reports the synthesis, characterization and catalytic performance of Pd promoted Ni/MgAl2O4 spinel catalysts for the thermal decomposition of methane into hydrogen and carbon nanotubes. The as-synthesized catalysts were characterized for their structural, textural, morphological properties. The catalytic properties of the Ni/MgAl2O4 catalyst were found to be enhanced with Pd promoter. It effectively increased the surface area of the catalyst without affecting the pore parameters and improved the fine dispersion of NiO particles on the surface of the magnesium aluminate. The reduction temperature of Ni/MgAl2O4 was found to be lowered after Pd deposition. Moreover, the Pd promoted catalyst provided high catalytic activity and stability for methane decomposition. A maximum hydrogen yield of similar to 57% was obtained over the Pd catalyst at a reaction temperature of 700 degrees C without any deactivation for 420 min of time on stream. Moreover highly uniform, interwoven and thin multi-walled carbon nanotubes with high graphitization degree were deposited over the catalysts. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据