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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/16837

Title: Coke formation during CO2 reforming of CH4 over alumina-supported nickel catalysts
Authors: Al-Fatish, A.S.A
Ibrahim., A.A.
Fakeeha, A.H.
Soliman, M.A.
Siddiqui, M.R.H.
Abasaeed, A.E
Keywords: CH4 activation; CO2 reforming; Coke; Ni loading; Stability; Supported catalysts
Issue Date: 2009
Publisher: Elsevier B.V.
Citation: Applied Catalysis A: General : Volume 364, Issue 1-2, Pages 150-155
Abstract: Carbon dioxide reforming of methane to synthesis gas over Ni supported alumina catalysts was investigated at atmospheric pressure. Two supports: high surface area γ-Al2O3 (SA-6175) and low surface α-Al2O3 (SA-5239) were used for the preparation of catalysts by the wet impregnation method. The reforming reactions were carried out using (CO2:CH4) feed ratio of 1:1, and reaction temperatures 500, 600, 700 and 800 °C. Influences of Ni loading, catalyst stability, coke deposition and synthesis gas ratio (H2/CO) were studied. Spent and fresh catalysts calcined at 900 °C were characterized by XRD, SEM and TGA techniques. It was observed that increasing Ni loading increases the formation of carbon. For high surface area catalyst, at low Ni loading, no coke formation on the catalyst was obtained. Similarly, no carbon formation was observed for low surface catalyst at 800 °C reaction temperature with feed ratio of 1.3/1.0.
URI: http://hdl.handle.net/123456789/16837
ISSN: 0926860X
Appears in Collections:College of Engineering

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