globalchange  > 过去全球变化的重建
DOI: 10.1016/j.apcatb.2018.11.040
WOS记录号: WOS:000457952600007
论文题名:
Dual functional catalytic materials of Ni over Ce-modified CaO sorbents for integrated CO2 capture and conversion
作者: Sun, Hongman1; Wang, Jianqiao2; Zhao, Jinhui3; Shen, Boxiong2; Shi, Jeffrey3; Huang, Jun3; Wu, Chunfei1,2,4
通讯作者: Shen, Boxiong ; Huang, Jun ; Wu, Chunfei
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN: 0926-3373
EISSN: 1873-3883
出版年: 2019
卷: 244, 页码:63-75
语种: 英语
英文关键词: CO2 capture and conversion ; Calcium looping ; The reverse water-gas shift ; Dual functional materials ; Ce-modified CaO sorbents
WOS关键词: WATER-GAS-SHIFT ; FISCHER-TROPSCH SYNTHESIS ; CARBON-DIOXIDE ; OXYGEN STORAGE ; PERFORMANCE ; TEMPERATURE ; CERIA ; HYDROGEN ; CYCLE ; MICROSPHERES
WOS学科分类: Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS研究方向: Chemistry ; Engineering
英文摘要:

Excessive anthropogenic CO2 emission in the atmosphere is considered as one of the main contributions to the serious climate changes. However, with the growth of global economics, more fossil fuels will be consumed to feed the global activity, especially in developing countries. Thus, CO2 needs to be captured for storage or converted to fuels or value-added chemicals. Herein, we propose and demonstrate a one-pot method synthesized dual functional materials (DFMs), which contain a sorbent coupled with a catalyst component, allowing the sorbent regeneration and CO2 conversion to CO are performed simultaneously in a single reactor. This process requires no additional thermal energy for the regeneration of sorbents. In addition, CeO2 is incorporated into the DFMs to largely enhance the stability of the materials for the process, and the influence of different Ce loadings on the performance of integrated CO2 capture and conversion is studied. It is found that the DFMs with a Ca/Ni/Ce molar ratio of 1:0.1:0.033 displays almost 100% CO selectivity and 51.8% CO2 conversion in the reverse water-gas shift (RWGS) reaction and a remarkable cyclic stability after 20 cycles of integrated CO2 capture and conversion. Therefore, the incorporation of Ce into DFMs has two profits, for one thing, the oxygen vacancies generated by CeO2 directly reduces the dissociated CO2 regenerated from the DFMs, demonstrating the high CO yield; for another, the well-dispersed CeO2, which could act as a physical barrier, effectively prevents the growth and agglomeration of CaO crystallite and NiO species.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/138200
Appears in Collections:过去全球变化的重建

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作者单位: 1.Univ Hull, Sch Engn & Comp Sci, Kingston Upon Hull HU6 7RX, N Humberside, England
2.Hebei Univ Technol, Sch Energy & Environm Engn, Tianjin 300401, Peoples R China
3.Univ Sydney, Sch Chem & Biomol Engn, Sydney, NSW 2037, Australia
4.Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT7 1NN, Antrim, North Ireland

Recommended Citation:
Sun, Hongman,Wang, Jianqiao,Zhao, Jinhui,et al. Dual functional catalytic materials of Ni over Ce-modified CaO sorbents for integrated CO2 capture and conversion[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019-01-01,244:63-75
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