Importance of the initial oxidation state of copper for the catalytic hydrogenation of dimethyl oxalate to ethylene glycol
文献类型：期刊论文
| 作者 | Sun, Yannan1,2; Meng, Fanqiong1; Ge, Qingjie1; Sun, Jian1 |
| 刊名 | Chemistryopen
 |
| 出版日期 | 2018-12-01 |
| 卷号 | 7期号:12页码:969-976 |
| 关键词 | Copper Esters Hydrogenation Oxidation state Reduction |
| ISSN号 | 2191-1363 |
| DOI | 10.1002/open.201800225 |
| 通讯作者 | Sun, jian(sunj@dicp.ac.cn) |
| 英文摘要 | Exposing a cu-based catalyst to a suitable temperature is of great importance to optimize its hydrogenation performance, as copper is sensitive to temperature. herein, we investigated the effect of the initial oxidation state of copper, tuned by the reduction temperature, on its catalytic performance in the hydrogenation of dimethyl oxalate (dmo) to ethylene glycol (eg) through designing a series of catalysts with different reduction temperatures (200-350 degrees c). among these catalysts, the cu/sio2 catalyst prepared by ammonia evaporation with a hydrogen reduction process at 250 degrees c showed the best performance in the hydrogenation of dmo with a conversion of 100 % and a selectivity to eg higher than 95 %. the relationship between the initial oxidation state of copper and catalytic performance was well established by characterizing the physicochemical properties of the cu/sio2 catalysts by xrd, tem, h-2 temperature-programmed reduction, n2o adsorption, and in situ reduction auger electron spectroscopy. the initial oxidation state of copper determined the conversion of dmo and the distribution of the products, and it could be balanced by reducing the temperature to improve the activity of the catalyst. this work provides a reference for further exploration of the mechanism and guidance for the design of catalysts for the hydrogenation of esters. |
| WOS关键词 | VAPOR-PHASE HYDROGENATION ; CU/SIO2 CATALYST ; STRUCTURAL EVOLUTION ; CHEMOSELECTIVE HYDROGENATION ; SELECTIVE HYDROGENATION ; PERFORMANCE ; TEMPERATURE ; STABILITY ; ETHANOL ; SYNGAS |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000454525600004 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2372950 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Sun, Jian |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, 380 Huaibeizhuang, Beijing 101408, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Yannan,Meng, Fanqiong,Ge, Qingjie,et al. Importance of the initial oxidation state of copper for the catalytic hydrogenation of dimethyl oxalate to ethylene glycol[J]. Chemistryopen,2018,7(12):969-976. |
| APA | Sun, Yannan,Meng, Fanqiong,Ge, Qingjie,&Sun, Jian.(2018).Importance of the initial oxidation state of copper for the catalytic hydrogenation of dimethyl oxalate to ethylene glycol.Chemistryopen,7(12),969-976. |
| MLA | Sun, Yannan,et al."Importance of the initial oxidation state of copper for the catalytic hydrogenation of dimethyl oxalate to ethylene glycol".Chemistryopen 7.12(2018):969-976. |
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来源：大连化学物理研究所
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