Morphological Modulation of Co2C by Surface-Adsorbed Species for Highly Effective Low-Temperature CO2Reduction
文献类型：期刊论文
| 作者 | Zhang, Shunan4,5; Liu, Xiaofang5; Luo, Hu5; Wu, Zhaoxuan5; Wei, Baiyin5; Shao, Zilong4,5; Huang, Chaojie4,5; Hua, Kaimin4,5; Xia, Lin5; Li, Jiong1 |
| 刊名 | ACS Catalysis
 |
| 出版日期 | 2022-07-15 |
| 卷号 | 12期号:14页码:8544-8557 |
| 关键词 | Carbides - Carbon - Chemical shift - Cobalt compounds - Fischer-Tropsch synthesis - Manganese compounds - Reaction kinetics - Temperature - Transition metals - Water gas shift |
| DOI | 10.1021/acscatal.2c02020 |
| 英文摘要 | Modulating the morphologies of transition metal carbides (TMCs) in situ in gas-solid reactions to improve catalytic performance remains a major challenge. Herein, we present a mechanism for manipulating prismatic and spherical Co2C by altering the surface energy and crystal growth rate by influencing the generation and amount of carboxylate species on hollow cubic Co3O4(without Mn). Co2C nanoprisms delivered an excellent activity in reverse water gas shift (RWGS) at 270 掳C, where CO2conversion was close to thermodynamic limitations at a space velocity of 60 禄000 mL gcat-1h-1. Furthermore, it showed a bifunctional effect that bridged RWGS and Fischer-Tropsch synthesis reactions, allowing for the direct synthesis of olefins and alcohols (C2+OH/ROH fraction of 98.4%, 4.3 mmol g-1h-1) by adjusting reaction conditions. The catalytic performance of Co2C nanoprisms was linked to (020) and (101) surfaces with high activity as well as double reaction pathways (redox and formate routes) through reaction mechanism and kinetics studies. This investigation provides a method for designing and modulating morphologies of TMCs and exhibits great potential for bridging RWGS and sequent cascade reactions. 漏 2022 American Chemical Society. All rights reserved. |
| 学科主题 | Modulation |
| 项目编号 | This work was supported by the National Natural Science Foundation of China (21776296, 21905291, and 22108289), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA21090201), and the Shanghai Sailing Program (19YF1453000), Shanghai Institute of Cleantech Innovation (CR190904, CR190905). X-ray absorption measurements were performed at the BL11B beamline at the Shanghai Synchrotron Radiation Facility (SSRF), Shanghai, P.R. China. Thanks to the Shanghai Institute of Cleantech Innovation. |
| 出版者 | American Chemical Society |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61298]  |
| 作者单位 | 1.Shanghai Synchrotron Radiation Facility, Zhangjiang National Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai; 201204, China 2.Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 3.Institute of Carbon Neutrality, Shanghai Tech University, Shanghai; 201203, China 4.University of the Chinese Academy of Sciences, Beijing; 100049, China 5.Cas Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai; 201210, China 6.Shanghai Institute of Clean Technology, Shanghai; 201620, China |
| 推荐引用方式 GB/T 7714 | Zhang, Shunan,Liu, Xiaofang,Luo, Hu,et al. Morphological Modulation of Co2C by Surface-Adsorbed Species for Highly Effective Low-Temperature CO2Reduction[J]. ACS Catalysis,2022,12(14):8544-8557. |
| APA | Zhang, Shunan.,Liu, Xiaofang.,Luo, Hu.,Wu, Zhaoxuan.,Wei, Baiyin.,...&Sun, Yuhan.(2022).Morphological Modulation of Co2C by Surface-Adsorbed Species for Highly Effective Low-Temperature CO2Reduction.ACS Catalysis,12(14),8544-8557. |
| MLA | Zhang, Shunan,et al."Morphological Modulation of Co2C by Surface-Adsorbed Species for Highly Effective Low-Temperature CO2Reduction".ACS Catalysis 12.14(2022):8544-8557. |
入库方式： OAI收割
来源：过程工程研究所
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