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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/16840

Title: Effect of Pd and Ce promoters in the activity of Ni/ γ-Al2O3 catalysts for the dry reforming of methane
Authors: Al-Fatesh, A.S.A
Fakeeha, A.H.
Keywords: CO2/CH4 reforming, Coke, Nickel, Synthesis gas, stability, promoter
Issue Date: 2010
Citation: 11th International Chemistry conference And Exhibition in Africa (11 ICCA)
Abstract: Synthesis gas is an important feed stock for the chemical and petrochemical industries to produce many kinds of chemical such as methanol, ammonia. It is also a source for hydrogen that can be used directly or in a fuel cell. An experimental investigation was carried out using Ni supported catalysts on γ-Al2O3 prepared by impregnation method. The catalysts were dried at 120C and calcined at 900C. The reforming reactions were carried out using CO2/CH4/N2 feed ratio of 5/5/1, F/W=44 ml/min.gcat and reaction temperatures of 500-800˚C. Influences of Pd, and Ce promoters, catalyst stability, coke deposition and (H2/CO) ratio were studied. The prepared catalysts were tested in AMI-2000 ZETON ALTIMARA micro reactor at atmospheric pressure. The effluents were analyzed using an online gas chromatography equipped with a thermal conductivity detector. Spent and fresh catalysts were characterized by using SEM and TGA techniques. The best performance was found using (3 wt % Ni + 0.15 wt % Ce / γ-Al2O3) catalyst. It also provided the least coke formation at high temperatures (700-800˚C). The highest activities measured, in terms of CH4 and CO2 conversions were 90.5% and 92.6% at 800C respectively. Stability test was carried out for 9 h.
URI: http://hdl.handle.net/123456789/16840
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