Catalytic decomposition of CH4 over Ni-Al2O3-SiO2 catalysts:: Influence of pretreatment conditions for the production of H2

被引：28

作者：

Ashok, Jangam ^{[1
]}

Raju, Gangadhara ^{[1
]}

Reddy, Padigapati Shiva ^{[1
]}

Subrahmanyam, Machiraju ^{[1
]}

Venugopal, Akula ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Catalysis & Phys Chem Div, Hyderabad 500607, Andhra Pradesh, India

来源：

JOURNAL OF NATURAL GAS CHEMISTRY | 2008年 / 17卷 / 02期

关键词：

in situ reduction; Ni-Al2O3-SiO2; catalyst; methane decomposition; hydrogen production; carbon nanofibers;

D O I：

10.1016/S1003-9953(08)60036-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

This article reports the production of COx free hydrogen and carbon nanofibers by the catalytic decomposition of methane over Ni-Al2O3-SiO2 catalysts. The influence of reaction temperature, pretreatment temperature, and effect of reductive pretreatment on the decomposition of methane activity is investigated. The physico-chemical characteristics of fresh and deactivated samples were characterized using BET-SA, XRD, TPR, SEM/TEM, CHNS analyses and correlated with the methane decomposition results obtained. The Ni-Al-Si (4 : 0.5 : 1.5) catalyst reduced with hydrazine hydrate produced better H-2 yields of ca. 1815 mol H-2/mol Ni than the catalyst reduced with 5% H-2/N-2.

引用

页码：113 / 119

页数：7

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