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Synthesis of higher alcohols from syngas over alkali promoted K-Co-Mo catalysts supported on multi-walled carbon nanotubes
马运生
Author NameAffiliationE-mail
马运生 中国科学技术大学化学物理系 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 XRD, N2 adsorption–desorption, TEM 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 serves as the key intermediate for the alcohol formation and carbon chain growth. Benefitting 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:
Synthesis of higher alcohols from syngas over alkali promoted K-Co-Mo catalysts supported on multi-walled carbon nanotubes
马运生
摘要:
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 XRD, N2 adsorption–desorption, TEM 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 serves as the key intermediate for the alcohol formation and carbon chain growth. Benefitting 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.
关键词:  CO hydrogenation, Higher alcohol synthesis, Mo-based catalyst, CNTs support.
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