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- Title
Influence of Ce<sub>2</sub>O<sub>3</sub> addition on the basicity of Ni/MgO and on its catalytic performance in dry reforming of methane (Turning CO<sub>2</sub> to fuel).
- Authors
Al-Doghachi, Faris A. J.; Taufiq-Yap, Yun Hin
- Abstract
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 coprecipitation 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.
- Subjects
SYNTHESIS gas; BIOGAS; COPRECIPITATION (Chemistry); MAGNESIUM nitrate; HYDROGEN production
- Publication
Journal of Petroleum Research & Studies, 2018, Issue 20, p132
- ISSN
2220-5381
- Publication type
Article