Preparation of sorbitol from D-glucose hydrogenation in gas–liquid–solid three-phase flow airlift loop reactor

Authors

  • Jian-Ping Wen,

    Corresponding author
    1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
    • School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
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  • Chang-Lin Wang,

    1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
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  • Yan-Xin Liu

    1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
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Abstract

A new process for D-glucose hydrogenation in 50 wt% aqueous solution, into sorbitol in a 1.5 m3 gas–liquid–solid three-phase flow airlift loop reactor (ALR) over Raney Nickel catalysts has been developed. Five main factors affecting the reaction time and molar yield to sorbitol, including reaction temperature (TR), reaction pressure (PR), pH, hydrogen gas flowrate (Qg) and content of active hydrogen, were investigated and optimized. The average reaction time and molar yield were 70 min and 98.6% under the optimum operating conditions, respectively. The efficiencies of preparation of sorbitol between the gas–liquid–solid three-phase flow ALR and stirred tank reactor (STR) under the same operating conditions were compared. Copyright © 2004 Society of Chemical Industry

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