In situ discovery on the formation of supported silver catalysts for ethylene epoxidation
文献类型：期刊论文
| 作者 | Sun, Like2,3; Huang, Haoyang1,3; Che, Ping2; Lin, Qiang4; Lian, Kuo4; Li, Jinbing4; Zhang, Yu1,3; Han, Yongsheng1,3 |
| 刊名 | ADVANCED POWDER TECHNOLOGY
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 33期号:9页码:7 |
| 关键词 | Silver catalysts Thermal decomposition Ethylene epoxidation Selectivity Size effect |
| ISSN号 | 0921-8831 |
| DOI | 10.1016/j.apt.2022.103732 |
| 英文摘要 | Silver particles supported on alumina are the main industrial catalysts for ethylene epoxidation. Silver catalysts are usually produced by an impregnation method followed by thermal decomposition. Although the decomposition process determines the structures and properties of silver catalysts, we are short of information on this high temperature process. Herein we employed a confocal laser scanning microscope (CLSM) equipped with a heating stage to disclose the thermal decomposition process of silver precursor towards the preparation of high selective silver catalysts. It is found that the formation of silver catalysts experiences two steps: crystallization and decomposition. The crystallization occurs at the tem-perature below 80celcius, resulting in the formation of silver complex. Further heating the sample to 140celcius, leads to the formation of silver particles at alumina wafers. The atmosphere has a significant effect on the formation and performance of catalysts. When the samples are heated in the nitrogen, small silver particles with similar size are formed, which leads to a high selectivity of ethylene epoxidation. The role of thermal atmospheres on the size and property of silver catalysts is discussed in this paper.(c) 2022 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved. |
| WOS关键词 | BIMETALLIC CATALYSTS ; SELECTIVITY ; AG ; PERFORMANCE ; ADSORPTION ; PROMOTION ; OXIDATION ; KINETICS ; OXIDE |
| 资助项目 | National Natural Science Foundation of China[91934302] ; National Natural Science Foundation of China[21978298] ; National Natural Science Foundation of China[U1862117] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2021-A-05] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000843783000002 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; State Key Laboratory of Multiphase Complex Systems |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/54474]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Che, Ping; Han, Yongsheng |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 2.Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 4.Beijing Res Inst Chem Ind, Yanshan Branch, SINOPEC, Beijing 102500, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Like,Huang, Haoyang,Che, Ping,et al. In situ discovery on the formation of supported silver catalysts for ethylene epoxidation[J]. ADVANCED POWDER TECHNOLOGY,2022,33(9):7. |
| APA | Sun, Like.,Huang, Haoyang.,Che, Ping.,Lin, Qiang.,Lian, Kuo.,...&Han, Yongsheng.(2022).In situ discovery on the formation of supported silver catalysts for ethylene epoxidation.ADVANCED POWDER TECHNOLOGY,33(9),7. |
| MLA | Sun, Like,et al."In situ discovery on the formation of supported silver catalysts for ethylene epoxidation".ADVANCED POWDER TECHNOLOGY 33.9(2022):7. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。