Hydrogenolysis of Glycerol by the Combined Use of Zeolite and Ni/Al2O3 as Catalysts: A Route for Achieving High Selectivity to 1-Propanol

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• 作者：Xufeng Lin ; Yanhong Lv ; Yanyan Xi ; Yuanyuan Qu ; David Lee Phillips ; Chenguang Liu
• 刊名：Energy & Fuels
• 出版年：2014
• 出版时间：May 15, 2014
• 年：2014
• 卷：28
• 期：5
• 页码：3345-3351
• 全文大小：310K
• 年卷期：v.28,no.5(May 15, 2014)
• ISSN：1520-5029

文摘

Sequential two-layer catalysts were used for the hydrogenolysis of glycerol to remove its oxygen content in a continuous-flow fixed-bed reactor. The acidic H-尾 catalyst layer was packed before the Ni/Al₂O₃ catalyst layer in the reactor. The sequential two-layer catalysts can provide good 1-propanol (1-PO) selectivities at high glycerol conversions (up to 69% selectivity at 100% conversion). To our knowledge, the catalytic system in this work presented one of the best selectivities to 1-PO using non-noble metal based catalytic systems. A preliminary mechanistic study indicated that most of 1-PO in the products was generated from glycerol via a 鈥渟equential two-time dehydration-hydrogenation鈥?mechanism.