CIESC Journal ›› 2014, Vol. 65 ›› Issue (1): 143-151.doi: 10.3969/j.issn.0438-1157.2014.01.018

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Kinetics of CoCu/SiO2 for synthesis of lower carbon mixed alcohols directly from syngas

SU Junjie, MAO Wei, YANG Zhen, XU Jing, HAN Yifan   

  1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
  • Received:2013-07-01 Revised:2013-11-03 Online:2014-01-05 Published:2014-01-05
  • Supported by:

    supported by the National Natural Science Foundation of China (21176071, 21106041, 21273070) and Shanghai Pujiang Talent Program (2011/11PJ1402400).

Abstract: Synthesis of lower carbon mixed alcohols directly from syngas is one of the most promising approaches for utilizing coal resources cleanly and efficiently. The intrinsic kinetics for this reaction, in which the effects of internal and external diffusion had been excluded, was studied over CoCu/SiO2 catalysts prepared by the impregnation method in a fixed-bed reactor at 503—543 K with molar ratios of H2/CO varying from 4 to 0.5. The apparent activation energies and the reaction orders with respect to H2 and CO for products were calculated through power law models. With the combination of chain growth probability and kinetics, the effect of temperature on reaction mechanism was discussed.

Key words: kinetics, carbon monoxide, hydrogenation, lower alcohols, CoCu/SiO2, syngas

CLC Number: 

  • O643.1

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