Oxidative CO_2 reforming of CH4 over Ni/a-Al_2O_3 catalyst

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 CO_2 to CH_4feed ratio of one and reaction temperatures in the range 600–800℃The activity and stability of the...

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Bibliographic Details
Published in:Journal of industrial and engineering chemistry (Seoul, Korea) 2011, 17(3), , pp.479-483
Main Authors: A.S.A. Al-Fatesh, A.A. Ibrahim, A.H. Fakeeha, A.E. Abasaeed, M.R.H. Siddiqui
Format: Article
Language:English
Subjects:
화학공학
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Summary: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 CO_2 to CH_4feed ratio of one and reaction temperatures in the range 600–800℃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℃,catalyst stability test revealed a 99.7% CH_4 conversion, 1.0% CH_4 conversion drop and 1% carbon formation. KCI Citation Count: 14
ISSN:1226-086X
1876-794X