Nickel catalyst supported on mesoporous MgAl2O4 nanopowders synthesized via a homogenous precipitation method for dry reforming reaction
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Mesoporous MgAl2O4 nanopowders were synthesized via the homogenous precipitation method and employed as a support for Ni catalysts in the dry reforming reaction. The prepared samples were characterized by XRD, BET, TPR, TPO, NH3-TPD, and SEM techniques. The XRD and BET results revealed that the prepared MgAl2O4 powder exhibited a nanocrystalline structure with high surface area (175 m2g−1). The catalytic tests, including activity and stability tests, showed that the prepared catalysts with various nickel loadings possessed high activity and stability in reaction. The Ni/MgAl2O4 with the highest amount of Ni had an acceptable performance in a long-term stability test. Increasing nickel loading increased the methane conversion and the amount of deposited carbon. The effects of feed ratio and GHSV on the catalytic activity of the Ni/MgAl2O4 catalyst were investigated in detail.
KeywordsDry reforming Magnesium aluminate Carbon dioxide Nanopowders Nickel catalysts
The authors gratefully acknowledge the support from the Iran National Science Foundation (INSF) and the University of Kashan for this work by Grant No. 158426/112.
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