Highly efficient reduction of O-2-containing CO2 via chemical looping based on perovskite nanocomposites

doi:10.1016/j.nanoen.2020.105320

	Highly efficient reduction of O-2-containing CO2 via chemical looping based on perovskite nanocomposites
	Zheng, Yan'e 3,5; Liao, Xiangbiao 4; Xiao, Hang 1,4; Haribal, Vasudev 6; Shi, Xiaoyang 4; Huang, Zhen 2; Zhu, Liangliang 1; Li, Kongzhai 3,5; Li, Fanxing 6; Wang, Hua 3
刊名	NANO ENERGY
	2020-12-01
卷号	78 页码:8
关键词	CO2 reduction Oxygen impurity Perovskite nanocomposites Chemical looping
ISSN号	2211-2855
DOI	10.1016/j.nanoen.2020.105320
通讯作者	Li, Kongzhai(kongzhai.li@foxmail.com) ; Chen, Xi(xichen@columbia.edu)
英文摘要	Purification/separation of CO2 stream from carbon capture or other carbon source is highly energy consuming process. However, oxidative impurity of O-2 either deactivates catalysts in most carbon reduction systems, and thus reduces CO2 conversion efficiency. Here we report an effective method for splitting O-2-containing CO2 into CO, through a chemical looping scheme with Cu (5 at%) doped LaFeO3 perovskites as efficient oxygen carriers. Up to 2.28 mol/kg CO yield was achieved with high stability in the presence of O-2, five times higher than that with the state-of-the-art oxygen carrier, while pristine LaFeO3 perovskite only showed efficient capability of reducing pure CO2. Furthermore, the syngas productivity was doubled with Cu modification. Through experimental characterizations and ab initio calculations, we uncovered that the exsolution of metallic Cu on the surface of reduced perovskite was able to mitigate the competition between CO2 and O-2 in the re-oxidation step. We envision that the efficient CO2 splitter with well-designed oxygen carriers have the potential to facilitate economical combination of impure carbon feedstock and carbon utilization system.
资助项目	National Natural Science Foundation of China[51774159] ; National Natural Science Foundation of China[21706108] ; Yunnan applied basic research projects[2018FD032] ; Qinglan Project of Kunming University of Science and Technology ; Center for Advanced Materials for Energy and Environment ; China Scholarship Council (CSC)
WOS关键词	CATALYST ; CONVERSION ; CU ; SELECTIVITY ; C3H6 ; NO ; PD
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000595911600007
资助机构	National Natural Science Foundation of China ; Yunnan applied basic research projects ; Qinglan Project of Kunming University of Science and Technology ; Center for Advanced Materials for Energy and Environment ; China Scholarship Council (CSC)
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/32346]
专题	中国科学院广州能源研究所
通讯作者	Li, Kongzhai; Chen, Xi
作者单位	1.Northwest Univ, Sch Chem Engn, Xian 710069, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Kunming Univ Sci & Technol, Fac Chem Engn, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China 4.Columbia Univ, Dept Earth & Environm Engn, Ctr Adv Mat Energy & Environm, Earth Engn Ctr, New York, NY 10027 USA 5.Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China 6.North Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA
推荐引用方式 GB/T 7714	Zheng, Yan'e,Liao, Xiangbiao,Xiao, Hang,et al. Highly efficient reduction of O-2-containing CO2 via chemical looping based on perovskite nanocomposites[J]. NANO ENERGY,2020,78:8.
APA	Zheng, Yan'e.,Liao, Xiangbiao.,Xiao, Hang.,Haribal, Vasudev.,Shi, Xiaoyang.,...&Chen, Xi.(2020).Highly efficient reduction of O-2-containing CO2 via chemical looping based on perovskite nanocomposites.NANO ENERGY,78,8.
MLA	Zheng, Yan'e,et al."Highly efficient reduction of O-2-containing CO2 via chemical looping based on perovskite nanocomposites".NANO ENERGY 78(2020):8.