Silicon nitride as a new support for copper catalyst to produce acrolein via selective oxidation of propene with very low CO2 release
文献类型：期刊论文
| 作者 | Guo, LL; Yu, J; Shu, M; Shen, L; Si, R |
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2019 |
| 卷号 | 380页码:352-365 |
| 关键词 | PROPYLENE EPOXIDATION HIGH-PERFORMANCE ACTIVE-SITES MECHANISM BISMUTH OXYGEN PHASE SHIFT HYDROGENATION CONVERSION |
| ISSN号 | 0021-9517 |
| DOI | 10.1016/j.jcat.2019.09.019 |
| 文献子类 | 期刊论文 |
| 英文摘要 | To obtain thermally stable copper-based catalysts with excellent catalytic performance in the selective propene (C3H6) oxidation reaction, amorphous silicon nitride (Si3N4) was selected to anchor active copper species using a deposition-precipitation approach followed by air calcination at different temperatures. We found that the thermal treatment temperature remarkably modified the reactivity of the copper catalyst, and the 800 degrees C-calcined 10 wt% Cu/Si3N4 showed superior catalytic activity with 24.0% propene conversion and 86.2% acrolein selectivity at 325 degrees C, featuring a turnover frequency as high as 80.6 h(-1). With the help of transmission electron microscopy, X-ray absorption fine structure, and in situ X-ray diffraction, we have identified that the larger Cu2O species account for the highly efficient formation of acrolein at 325 degrees C. From the CO temperature-programmed reduction results, we have confirmed that the presence of surface copper hydroxyls (Cu-OH) was closely related to the acrolein selectivity, since they favored CO2 generation at the beginning of the reaction. Furthermore, surface copper hydroxyls can be effectively tuned by optimizing the air calcination temperature and thus improve the catalytic activity. (C) 2019 Elsevier Inc. All rights reserved. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32201]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Shanghai Inst Measurement & Testing Technol, Shanghai 200233, Peoples R China; 4.TILON Grp Technol Ltd, Div China, Shanghai 200090, Peoples R China; 5.Zhangjiang Lab, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, LL,Yu, J,Shu, M,et al. Silicon nitride as a new support for copper catalyst to produce acrolein via selective oxidation of propene with very low CO2 release[J]. JOURNAL OF CATALYSIS,2019,380:352-365. |
| APA | Guo, LL,Yu, J,Shu, M,Shen, L,&Si, R.(2019).Silicon nitride as a new support for copper catalyst to produce acrolein via selective oxidation of propene with very low CO2 release.JOURNAL OF CATALYSIS,380,352-365. |
| MLA | Guo, LL,et al."Silicon nitride as a new support for copper catalyst to produce acrolein via selective oxidation of propene with very low CO2 release".JOURNAL OF CATALYSIS 380(2019):352-365. |
入库方式： OAI收割
来源：上海应用物理研究所
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