Oxidative CO2 reforming of CH4 over Ni/α-Al2O3 catalyst

被引：18

作者：

Al-Fatesh, A. S. A. ^{[1
]}

Ibrahim, A. A. ^{[1
]}

Fakeeha, A. H. ^{[1
]}

Abasaeed, A. E. ^{[1
]}

Siddiqui, M. R. H. ^{[2
]}

机构：

[1] King Saud Univ, Coll Engn, Dept Chem Engn, Riyadh 11421, Saudi Arabia

[2] King Saud Univ, Dept Chem, Coll Sci, Riyadh 11451, Saudi Arabia

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2011年 / 17卷 / 03期

关键词：

Dry reforming; Oxidative reforming; Methane; Supported catalysts; Coke; Catalyst stability; CARBON-DIOXIDE; SYNTHESIS GAS; NATURAL-GAS; METHANE; COMBINATION; CONVERSION; HYDROGEN; SYNGAS; COKE;

D O I：

10.1016/j.jiec.2011.05.029

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Oxidative carbon dioxide reforming of methane to synthesis gas over alumina-supported Ni catalysts was investigated at atmospheric pressure. The reforming reactions were carried out using a CO2 to CH4 feed ratio of one and reaction temperatures in the range 600-800 degrees C. The activity and stability of the catalyst, carbon deposition, and synthesis gas (H-2/CO) ratio were determined. Catalyst deactivation was primarily due to coke formation, energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM) and thermo-gravimetric/differential analyzer (TG/DTA) techniques were used to confirm carbon deposition. It was observed that increasing the oxygen feed concentration and/or reaction temperatures, enhanced methane conversion and reduced coke formation. When 20% O-2 feed was used at 800 degrees C, catalyst stability test revealed a 99.7% CH4 conversion, 1.0% CH4 conversion drop and 1% carbon formation. (C) 2011 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

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页码：479 / 483

页数：5

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