Cooperative Catalysis of Nickel and Nickel Oxide for Efficient Reduction of CO2 to CH4 | |
Bi, Qingyuan; Huang, Xieyi; Yin, Guoheng; Chen, Tianyuan; Du, Xianlong; Cai, Jun; Xu, Jing; Liu, Zhi; Han, Yifan; Huang, Fuqiang | |
刊名 | CHEMCATCHEM |
2019-02-20 | |
卷号 | 11期号:4页码:1295 |
关键词 | CH4 generation CO2 utilization active sites cooperative catalysis Ni-NiO components |
ISSN号 | 1867-3880 |
DOI | 10.1002/cctc.201801896 |
文献子类 | Article |
英文摘要 | The use of CO2 to produce value-added energy chemicals is a promising means for renewable CO2 transformation in low-carbon energy system, and CO2 methanation has attracted ever-increasing interest. Herein, we report that the Ni/MCM-41 catalyst with prominent cooperative effect of Ni and NiO is efficient for CH4 generation with CO2 conversion of 73.2 % and CH4 selectivity of 91.6 % at 400 degrees C and high gas hourly space velocity (GHSV) of 90000 mL g(cat)(-1) h(-1). Combined methodologies of in situ X-ray diffraction, diffuse reflectance infrared Fourier transform spectroscopy, and ambient-pressure X-ray photoelectron spectroscopy reflect the structural evolvements of Ni/MCM-41 catalyst, the presence of carbonyl intermediates, the co-existence of metallic and oxidized Ni species with sufficient molar ratio of Ni-0/Ni2+ under working conditions. H-2 and CO2 molecules are preferentially adsorbed and chemically activated over Ni-0 and Ni2+ species, respectively. The possible four-step reaction mechanism involved carbonyl pathway and the cleavage of C=O bond from CO2 as the rate-determining step over the engineered Ni/MCM-41 catalyst was demonstrated. |
WOS研究方向 | Chemistry |
语种 | 英语 |
出版者 | WILEY-V C H VERLAG GMBH |
内容类型 | 期刊论文 |
源URL | [http://ir.sic.ac.cn/handle/331005/27325] |
专题 | 中国科学院上海硅酸盐研究所 |
推荐引用方式 GB/T 7714 | Bi, Qingyuan,Huang, Xieyi,Yin, Guoheng,et al. Cooperative Catalysis of Nickel and Nickel Oxide for Efficient Reduction of CO2 to CH4[J]. CHEMCATCHEM,2019,11(4):1295. |
APA | Bi, Qingyuan.,Huang, Xieyi.,Yin, Guoheng.,Chen, Tianyuan.,Du, Xianlong.,...&Huang, Fuqiang.(2019).Cooperative Catalysis of Nickel and Nickel Oxide for Efficient Reduction of CO2 to CH4.CHEMCATCHEM,11(4),1295. |
MLA | Bi, Qingyuan,et al."Cooperative Catalysis of Nickel and Nickel Oxide for Efficient Reduction of CO2 to CH4".CHEMCATCHEM 11.4(2019):1295. |
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