Fe-substituted Ba-hexaaluminate with enhanced oxygen mobility for CO2 capture by chemical looping combustion of methane

doi:10.1016/j.jechem.2018.02.003

	Fe-substituted Ba-hexaaluminate with enhanced oxygen mobility for CO2 capture by chemical looping combustion of methane
	Tian, Ming 2; Huang, Fei 1,2; Zhu, Yanyan 3; Wang, Xiaodong 2; Wang, Aiqin 2; Li, Lin 2; Lin, Jian 2; Wang, Junhu 2
刊名	JOURNAL OF ENERGY CHEMISTRY
	2019-02-01
卷号	29 页码:50-57
关键词	CO2 capture Chemical looping CH4 conversion Oxygen mobility Fe-based hexaaluminate
ISSN号	2095-4956
DOI	10.1016/j.jechem.2018.02.003
通讯作者	Tian, Ming(tm1982@dicp.ac.cn) ; Wang, Xiaodong(xdwang@dicp.ac.cn)
英文摘要	While Fe-based oxygen carriers (OC) are regarded to be promising for chemical looping combustion (CLC), the decrease of CO2 selectivity during deep reduction process and the severe agglomeration of Fe2O3 often occur after multiple redox cycles due to the low oxygen mobility. Herein, Fe-substituted Ba-hexaaluminates (BaFexAl12-xO19, denoted as BF(x)A-H, x = 1 and 2) prepared by a modified two-step method exhibited not only higher amount of converted oxygen (O-t) and CH4 conversion (77% and 81% vs. 17% and 75%) than those prepared by the traditional co-precipitation method (BF(x)A-C, x = 1 and 2) but also high CO2 selectivity above 92% during the nearly whole reduction from Fe3+ to Fe2+. Furthermore, the BF(x)A-H exhibited the excellent recyclability during 50 cycles. The better performance was ascribed to the markedly enhanced oxygen mobility which resulted from dominant occupancy of Fe cations in Al(5) sites (Fe-5: 71% and 70% vs. 49% and 41%) in mirror planes of hexaaluminate leading to larger amount of lattice oxygen coordinated with Fe-5 (O-Fe-5) (0.45 and 0.85 mmol/g vs. 0.31 and 0.50 mmol/g). The improvement of oxygen mobility also favored the preservation of chemical state of Fe cations in hexaaluminate structure in the re-oxidation step, resulting in the excellent recyclability of BF(x)A-H. (C) 2018 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
资助项目	National Science Foundation of China (NSFC)[21303137] ; National Science Foundation of China (NSFC)[21406225] ; National Science Foundation of China (NSFC)[21676269] ; National Key Project for Fundamental Research and Development of China[2016YFA0202801] ; Postdoctoral Science Foundation of China[2014M561261]
WOS关键词	BARIUM HEXAALUMINATE ; IRON-OXIDE ; CRYSTALLOGRAPHIC SITES ; CATALYTIC COMBUSTION ; PARTIAL OXIDATION ; CARBON CAPTURE ; CARRIER ; REDOX ; MOSSBAUER ; MN
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000451732100008
资助机构	National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Key Project for Fundamental Research and Development of China ; National Key Project for Fundamental Research and Development of China ; Postdoctoral Science Foundation of China ; Postdoctoral Science Foundation of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Key Project for Fundamental Research and Development of China ; National Key Project for Fundamental Research and Development of China ; Postdoctoral Science Foundation of China ; Postdoctoral Science Foundation of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Key Project for Fundamental Research and Development of China ; National Key Project for Fundamental Research and Development of China ; Postdoctoral Science Foundation of China ; Postdoctoral Science Foundation of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Key Project for Fundamental Research and Development of China ; National Key Project for Fundamental Research and Development of China ; Postdoctoral Science Foundation of China ; Postdoctoral Science Foundation of China
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/166452]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Tian, Ming; Wang, Xiaodong
作者单位	1.Fujian Normal Univ, Fuzhou 350007, Fujian, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 3.Northwest Univ, Coll Chem Engn, Xian 710069, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Tian, Ming,Huang, Fei,Zhu, Yanyan,et al. Fe-substituted Ba-hexaaluminate with enhanced oxygen mobility for CO2 capture by chemical looping combustion of methane[J]. JOURNAL OF ENERGY CHEMISTRY,2019,29:50-57.
APA	Tian, Ming.,Huang, Fei.,Zhu, Yanyan.,Wang, Xiaodong.,Wang, Aiqin.,...&Wang, Junhu.(2019).Fe-substituted Ba-hexaaluminate with enhanced oxygen mobility for CO2 capture by chemical looping combustion of methane.JOURNAL OF ENERGY CHEMISTRY,29,50-57.
MLA	Tian, Ming,et al."Fe-substituted Ba-hexaaluminate with enhanced oxygen mobility for CO2 capture by chemical looping combustion of methane".JOURNAL OF ENERGY CHEMISTRY 29(2019):50-57.