Efficient one-pot hydrogenolysis of biomass-derived xylitol into ethylene glycol and 1,2-propylene glycol over Cu–Ni–ZrO2 catalyst without solid bases

论文摘要

The directly selective hydrogenolysis of xylitol to ethylene glycol（EG） and 1,2-propylene glycol（1,2-PDO）was performed on Cu–Ni–ZrO2 catalysts prepared by a co-precipitation method. Upon optimizing the reaction conditions（518 K, 4.0 MPaH2 and 3 h）, 97.0% conversion of xylitol and 63.1% yield of glycols were obtained in water without extra inorganic base. The catalyst still remained stable activity after six cycles and above 80% total selectivity of glycols was obtained when using 20.0% xylitol concentration. XRD, TEM and ICP results indicated that Cu–Ni–ZrO2 catalysts possess favorable stability. Cu and Ni are beneficial to the cleavage of C–O and C–H bond, respectively. To reduce the hydrogen consumption, isopropanol was added as in-situ hydrogen source and 96.4% conversion of xylitol with 43.6% yield of glycols were realized.

论文目录

• 1. Introduction
• 2. Experimental
•   2.1. Catalyst preparation
•   2.2. Catalyst characterization
•   2.3. Catalytic experiments and product analysis
• 3. Results and discussion
•   3.1. Performance of Cu–Ni–ZrO2catalyst on xylitol hydrogenolysis
•   3.2. Characterization of catalysts
•   3.3. In-situ hydrogenation with isopropanol
• 4. Conclusions

文章来源

类型: 期刊论文

作者: Shenglin Li,Yifan Zan,Yuanyuan Sun,Zhichao Tan,Gai Miao,L. Z. Kong,Yuhan Sun

来源: Journal of Energy Chemistry 2019年01期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 有机化工

单位: CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences,University of Chinese Academy of Sciences,Shanghai University

基金: financial supports provided by the National Natural Science Foundation of China (21406255),the Shanghai Science and Technology Committee (16dz1207200),the Youth Innovation Promotion Association CAS (2015231)

分类号: TQ426;TQ223.162

页码: 101-106

总页数: 6

文件大小: 2128K

下载量: 14