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Catalytic test of supported Ni catalysts with core/shell structure for dry reforming of methane

Author:
Kang, Ki-Moon, Kim, Hyo-Won, Shim, Il-Wun, Kwak, Ho-Young
Source:
Fuel processing technology 2011 v.92 no.6 pp. 1236-1243
ISSN:
0378-3820
Subject:
aluminum oxide, carbon dioxide, carbon monoxide, catalysts, hydrogen, methane, nickel, oxidation, steam, temperature, thermal stability
Abstract:
Supported nickel catalysts with core/shell structures of Ni/Al₂O₃ and Ni/MgO–Al₂O₃ were synthesized under multi-bubble sonoluminescence (MBSL) conditions and tested for dry reforming of methane (DRM) to produce hydrogen and carbon monoxide. A supported Ni catalyst made of 10% Ni loading on Al₂O₃ and MgO–Al₂O₃, which performed best in the steam reforming of methane (97% methane conversion at 750°C) and in the partial oxidation of methane (96% methane conversion at 800°C), showed also good performance in DRM and excellent thermal stability for the first 150h. The supported Ni catalysts Ni/Al₂O₃ and Ni/MgO–Al₂O₃ yielded methane conversions of 92% and 92.5%, respectively and CO₂ conversions of 95.0% and 91.8%, respectively, at a reaction temperature of 800°C with a molar ratio of CH₄/CO₂=1. Those were near thermodynamic equilibrium values.
Agid:
988214