2013 Applied Petrochemical Research
In this work, different kinds of supported molybdenum carbide catalysts have been prepared using temperature programmed carburization method with 20 vol% CH4/H2. Cobalt and potassium were later loaded over the resultant carbides. The catalysts were evaluated on the new alcohols test rig under 70 bar pressure with syngas feed gas with a H2/CO ratio of 2.0 at various temperatures. The carbide catalysts supported over boron-modified Al2O3 produced higher alcohols in significant yields. The best catalyst achieved 46.7 % selectivity to alcohol at 31.8 % conversion of CO. This corresponds to 199.7 g/alcohol/liter of catalyst/hour. In addition, 72.5 % selectivity to alcohol (93.1 % on CO2 free basis) was achieved at lower temperature with a conversion of 14.1 %. Characterization results showed that the boron-modified supports result in smaller molybdenum carbide crystallite size which might be responsible for the high activity. Higher potassium content benefits the high alcohol selectivity, but affects the catalyst activity to some extent.
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Name |
Affiliation |
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Almegren, Hamid |
Petrochemical Research Institute, King Abdulaziz City for Science and Technology |
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Tiancun Xiao |
KOPRC, Inorganic Chemistry Laboratory, Oxford University, South Parks Road, Oxford |
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Mohammad AlKinany |
Petrochemical Research Institute, King Abdulaziz City for Science and Technology |
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Saud Aldree |
Petrochemical Research Institute, King Abdulaziz City for Science and Technology |
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Yu Huang |
Guangzhou Boxenergytech Ltd, Guangzhou Boneng Nnengyuan Keji Youxian Gongsi, Guangzhou City, People’s Republic of China |
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Haoyi Chen |
Guangzhou Boxenergytech Ltd, Guangzhou Boneng Nnengyuan Keji Youxian Gongsi, Guangzhou City, People’s Republic of China |
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Edwards, Peter |
KOPRC, Inorganic Chemistry Laboratory, Oxford University, South Parks Road, Oxford |
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Kuznetsov, Vladimir |
KOPRC, Inorganic Chemistry Laboratory, Oxford University, South Parks Road, Oxford |