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Synthesis of Higher Alcohols from Syngas over Alkali Promoted K-Co-Mo Catalysts Supported on Multi-walled Carbon Nanotubes
Li-li Ji,Huan Li,Wei Zhang,Song Sun,Chen Gao,Jun Bao*,Yun-sheng Ma*
Author NameAffiliationE-mail
Li-li Ji Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Huan Li National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China  
Wei Zhang National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China  
Song Sun National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China  
Chen Gao National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China  
Jun Bao* National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China baoj@ustc.edu.cn 
Yun-sheng Ma* Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China ysma@ustc.edu.cn 
Abstract:
A series of carbon nanotubes-supported K-Co-Mo catalysts were prepared by a sol-gel method combined with incipient wetness impregnation.The catalyst structures were characterized by X-ray diffraction,N2 adsorption-desorption,transmission electron microscopy and H2-TPD,and its catalytic performance toward the synthesis of higher alcohols from syngas was investigated.The as-prepared catalyst particles had a low crystallization degree and high dispersion on the outer and inner surface of CNTs.The uniform mesoporous structure of CNTs increased the diffusion rate of reactants and products,thus promoting the reaction conversion.Furthermore,the incorporation of CNTs support led to a high capability of hydrogen absorption and spillover and promoted the formation of alkyl group,which served as the key intermediate for the alcohol formation and carbon chain growth.Benefiting from these characteristics,the CNTs supported Mo-based catalyst showed the excellent catalytic performance for the higher alcohols synthesis as compared to the unsupported catalyst and activated carbon supported catalyst.
Key words:  CO hydrogenation  Higher alcohol synthesis  Mo-based catalyst  CNTs support
FundProject:This work was supported by National Natural Science Foundation of China (No.21673214).
K-Co-Mo/CNTs催化剂合成低碳醇性能研究
姬丽丽,李欢,张伟,孙松,高琛,鲍骏*,马运生*
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DOI:10.1063/1674-0068/30/cjcp1703061
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