TY - JOUR ID - TI - Influence of Ce2O3 addition on the basicity of Ni/MgO and on its catalytic performance in dry reforming of methane) Turning CO2 to fuel) تآثير اضافة آوكسيد السيريوم الثلاثي على قاعدية آوكسيد المغنيسيوم/نيكل وكذلك على فعاليته كعامل مساعد في تفاعل ثاني آوكسيد الكاربون مع الميثان. (تحويل غاز ثاني اوكسيد الكاربون الى وقود) AU - Faris A. J. Al-Doghachi AU - Yun Hin Taufiq-Yap PY - 2018 VL - IS - 20 SP - 132 EP - 146 JO - Journal of Petroleum Research & Studies مجلة البحوث والدراسات النفطية SN - 22205381 27101096 AB - The only way to stabilize the Earth’s climate is to stabilize the concentration of greenhouse gases in the atmosphere. In this study, the conversion of methane and CO2 to synthesis gas using dry reforming over catalysts Ni/Mg1-XCeXO (x= 0, 0.03, 0.07, 0.15; 1 wt% Ni each), dry reforming of methane was performed. The catalysts were prepared by K2CO3 co-precipitation from aqueous cerium nitrate hexahydrate and magnesium nitrate hexahydrate. Impregnation of nickel (II) acetylacetonate onto MgO-Ce2O3 was then conducted. TEM, XRD, FTIR, XRF, XPS, and BET characterizations of the catalysts were carried out. Results showed that the catalysts were reduced at 700 °C by H2 prior to each reaction. CH4 and CO2 conversions at 900 °C of the catalysts after being tested for 200h decreased in the order Ni/Mg0.85Ce0.15O, Ni/Mg0.93Ce0.07O, Ni/Mg0.97Ce0.03O, and Ni/MgO. The highest H2 and CO selectivities, was observed at a 1:1 CH4:CO2 mole ratio. We further performed a dry reforming in the presence of low-concentration oxygen flow (1.25 Vol %) and found an increased CH4 conversion.

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