Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 33, Issue 8, Pages 2036-2043Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2008.02.029
Keywords
GTL; combined reforming; hydrotalcite; nano-sized Ni crystal; SMSI; coke resistance
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Funding
- Ministry of Knowledge Economy (MKE), Republic of Korea [KIER-A82405] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [핵C6B1608, 과C6A1907, 23-2006-00-001-00] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Highly active and stable nano-sized Ni catalysts supported on MgO-Al2O3 prepared from hydrotalcite-like materials have been designed for the combined steam and carbon dioxide reforming of methane (CSCRM), which is a useful process to adjust the H-2/CO ratio for Fischer-Tropsch process. Ni/MgO-Al2O3 exhibits remarkable coke resistance, while commercial Ni/MgAl2O4 catalyst shows considerable coke deposition during the target reaction. A strong metal to support interaction (SMSI) of Ni/MgO-Al2O3 enhances coke resistance. The change of the surface area and NiO crystallite size with varying the pre-calcination temperature of support was investigated in relation to the coke resistance. It has been concluded that highly dispersed Ni metal pre-calcined at 800 degrees C shows good coke resistance and high activity. As a consequence, Ni/MgO-Al2O3 catalyst will be a promising catalyst in CSCRM for the GTL process. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
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