Hydrogenolysis of biomass-derived sorbitol to glycols and glycerol over Ni-MgO catalysts

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• 作者：Xinguo Chen^a ; ^b ; Xicheng Wang^a ; Shengxi Yao^a ; Xindong Mu^a ; ^{muxd@qibebt.ac.cn}
• 关键词：Sorbitol ; Hydrogenolysis ; Glycols ; Ni-MgO ; Basic carrier
• 刊名：Catalysis Communications
• 出版年：2013
• 出版时间：5 September, 2013
• 年：2013
• 卷：39
• 期：Complete
• 页码：86-89
• 全文大小：500 K

文摘

Ni-MgO catalysts with varying Ni/Mg ratios were prepared by co-precipitation and tested in sorbitol hydrogenolysis. At 473 K and 4 MPa H₂, the best catalyst with Ni/Mg ratio of 3:7 exhibited 67.8 % conversion and 80.8 % total selectivity of ethylene glycol, 1,2-propylene glycol and glycerol. These catalysts were characterized by XRD, CO₂-TPD and H₂ chemisorption, revealing that the activity depended strongly on the basicity and Ni surface area. The reaction conditions were optimized, which were relatively mild for this chemoselective conversion.