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Preparation of sorbitol from D ‐glucose hydrogenation in gas–liquid–solid three‐phase flow airlift loop reactor
Author(s) -
Wen JianPing,
Wang ChangLin,
Liu YanXin
Publication year - 2004
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.1001
Subject(s) - sorbitol , airlift , hydrogen , yield (engineering) , chemistry , volumetric flow rate , raney nickel , chromatography , catalysis , aqueous solution , chemical engineering , materials science , analytical chemistry (journal) , nuclear chemistry , organic chemistry , bioreactor , thermodynamics , metallurgy , physics , engineering
A new process for D ‐glucose hydrogenation in 50 wt% aqueous solution, into sorbitol in a 1.5 m 3 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 ( T R ), reaction pressure ( P R ), pH, hydrogen gas flowrate ( Q g ) 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