An efficient and stable Cu/SiO2 catalyst for the syntheses of ethylene glycol and methanol via chemoselective hydrogenation of ethylene carbonate
文献类型：会议论文
| 作者 | Liu, Jiaju; He, Peng; Wang, Liguo; Liu, Hui; Cao, Yan; Li, Huiquan |
| 出版日期 | 2018 |
| 会议日期 | JUL 17-21, 2017 |
| 会议地点 | Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai, PEOPLES R CHINA |
| 关键词 | Ethylene carbonate DIMETHYL OXALATE Hydrogenation CO2 HYDROGENATION beta-Cyclodextrin HETEROGENEOUS HYDROGENATION Cu/SiO2 SELECTIVE HYDROGENATION Methanol STRUCTURAL EVOLUTION Ethylene glycol CYCLIC CARBONATES PERFORMANCE ETHANOL MOLECULES ECONOMY |
| 卷号 | 39 |
| DOI | 10.1016/S1872-2067(18)63032-3 |
| 页码 | 1283 ; 1293 |
| 英文摘要 | The efficient synthesis of methanol and ethylene glycol via the chemoselective hydrogenation of ethylene carbonate (EC) is important for the sustainable utilization of CO2 to produce commodity chemicals and fuels. In this work, a series of P-cyclodextrin-modified Cu/SiO2 catalysts were prepared by ammonia evaporation method for the selective hydrogenation of EC to co-produce methanol and ethylene glycol. The structure and physicochemical properties of the catalysts were characterized in detail by N-2 physisorption, XRD, N2O titration, H-2-TPR, TEM, and XPS/XAES. Compared with the unmodified 25Cu/SiO2 catalyst, the involvement of beta-cyclodextrin in 5 beta-25Cu/SiO2 could remarkably increase the catalytic activity-excellent activity of 1178 mg(Ec) g(cat) h(-1) with 98.8% ethylene glycol selectivity, and 71.6% methanol selectivity could be achieved at 453 K. The remarkably improved recyclability was primarily attributed to the remaining proportion of Cu+/(Cu-0+Cu+). Furthermore, the DFT calculation results demonstrated that metallic Cu dissociated adsorbed Hz, while Cu' activated the carbonyl group of EC and stabilized the intermediates. This study is a facile and efficient method to prepare highly dispersed Cu catalysts this is also an effective and stable heterogeneous catalyst system for the sustainable synthesis of ethylene glycol and methanol via indirect chemical utilization of CO2. (C) 2018, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved. |
| 源文献作者 | ShanghaiTech Univ |
| 会议录 | Article; Proceedings Paper
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| WOS记录号 | WOS:000441480500003 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28951]  |
| 专题 | 中国科学院过程工程研究所 |
| 推荐引用方式 GB/T 7714 | Liu, Jiaju,He, Peng,Wang, Liguo,et al. An efficient and stable Cu/SiO2 catalyst for the syntheses of ethylene glycol and methanol via chemoselective hydrogenation of ethylene carbonate[C]. 见:. Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai, PEOPLES R CHINA. JUL 17-21, 2017. |
入库方式： OAI收割
来源：过程工程研究所
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