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| The effective and stable Cu-C@SiO2 catalyst for the syntheses of methanol and ethylene glycol via selective hydrogenation of ethylene carbonate | |
| Chen, Xinwei1,2; Wang, Liguo1,3,5; Zhang, Chanjuan1,3; Tu, Weixia2; Cao, Yan1; He, Peng1; Li, Jiachen1,3; Li, Huiquan1,3,4 | |
| 2021-05-13 | |
| Source Publication | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
 |
| ISSN | 0360-3199 |
| Volume | 46Issue:33Pages:17209-17220 |
| Abstract | The co-production of ethylene glycol and methanol via ethylene carbonate hydrogenation derived from CO2 has attracted great concerns because of the promising chemical utilization of CO2 in large-scale. Copper-based catalysts are widely concerned in hydrogenation of ester due to the high catalytic efficiency and low cost, but the stability of copper-based catalyst is poor and needs to be further improved. In this study, the modification Cu-C@SiO2-R catalyst with graphite oxide was prepared by using Cu-3(BTC)(2) as the precursor and ammonia evaporation method, and was applied in ethylene carbonate hydrogenation to synthesis ethylene glycol and methanol. Furthermore, the catalysts were characterized in detail. The results showed that the Cu-C@SiO2-R catalyst was modified with graphite oxide, the average size of Cu particles was 2.9 nm and Cu particles had good dispersion. In addition, both Cu-C@SiO2-R and Cu@SiO2-R catalysts had similar ratio of Cu+/(Cu-0+Cu+). In a batch reactor, under 453 K, 5 MPa, 4 h, the catalytic efficiency was 80.0% EC conversion 92.2% EG and 70.8% MeOH selectivity showing excellent catalytic performance capability of Cu-C@SiO2-R catalyst. In long-term experiment, the Cu-C@SiO2-R catalyst showed excellent stability after using for 264 h. The activity was 0.63 gEC g(cat)(-1) h(-1), and 100.0% EC conversion 99.9% EG and 85.8% MeOH selectivity could be achieved in a fixed bed. After the long-term experiment, the Cu+ /(Cu++Cu-0) ratio in Cu-C@SiO2-R catalyst kept at around 0.48. In contrast, the Cu+/(Cu++Cu-0) ratio in Cu@SiO2-R catalyst decreased sharply from 0.48 to 0.38. The stability of the structure and the balance of valence of Cu were considered to be responsible to the stability of Cu-C@SiO2-R catalyst, because the graphite oxide not only kept the Cu+/(Cu-0+Cu+) ratio stability, but also restrained the aggregation of Cu particles and loss of copper. This work provides an in-depth understanding of the stabilization mechanism of Cu and can be a reference for the industrial application of ethylene carbonate hydrogenation. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Ethylene carbonate Hydrogenation Methanol Ethylene glycol Cu-C@SiO2, stable |
| DOI | 10.1016/j.ijhydene.2021.02.166 |
| Language | 英语 |
| WOS Keyword | ONE-POT SYNTHESIS ; DIMETHYL OXALATE ; CU/SIO2 CATALYST ; CHEMOSELECTIVE HYDROGENATION ; EFFICIENT HYDROGENATION ; CU-SIO2 CATALYSTS ; COPPER-CATALYSTS ; FACILE SYNTHESIS ; CO2 ; OXIDATION |
| Funding Project | National Natural Science Foundation of China[21576272] ; Science and Technology Service Network Initiative, Chinese Academy of Sciences[KFJSTSQYZD138] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA 21030600] |
| WOS Research Area | Chemistry ; Electrochemistry ; Energy & Fuels |
| WOS Subject | Chemistry, Physical ; Electrochemistry ; Energy & Fuels |
| Funding Organization | National Natural Science Foundation of China ; Science and Technology Service Network Initiative, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences |
| WOS ID | WOS:000646140200015 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/48768 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wang, Liguo; Tu, Weixia |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China 4.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 5.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China |
| First Author Affilication | Center of lonic Liquids and Green Engineering |
| Corresponding Author Affilication | Center of lonic Liquids and Green Engineering |
| Recommended Citation GB/T 7714 | Chen, Xinwei,Wang, Liguo,Zhang, Chanjuan,et al. The effective and stable Cu-C@SiO2 catalyst for the syntheses of methanol and ethylene glycol via selective hydrogenation of ethylene carbonate[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2021,46(33):17209-17220. |
| APA | Chen, Xinwei.,Wang, Liguo.,Zhang, Chanjuan.,Tu, Weixia.,Cao, Yan.,...&Li, Huiquan.(2021).The effective and stable Cu-C@SiO2 catalyst for the syntheses of methanol and ethylene glycol via selective hydrogenation of ethylene carbonate.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,46(33),17209-17220. |
| MLA | Chen, Xinwei,et al."The effective and stable Cu-C@SiO2 catalyst for the syntheses of methanol and ethylene glycol via selective hydrogenation of ethylene carbonate".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 46.33(2021):17209-17220. |
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