Improving Syngas Selectivity of Fe2O3/Al2O3 with Yttrium Modification in Chemical Looping Methane Conversion

doi:10.1021/acscatal.9b02730

	Improving Syngas Selectivity of Fe2O3/Al2O3 with Yttrium Modification in Chemical Looping Methane Conversion
	Kang, Yu 1,2; Tian, Ming 1; Huang, Chuande 1; Lin, Jian 1; Hou, Baolin 1; Pan, Xiaoli 1; Li, Lin 1; Rykov, Alexandre I.1; Wang, Junhu 1; Wang, Xiaodong 1
刊名	ACS CATALYSIS
	2019-09-01
卷号	9 期号:9 页码:8373-8382
关键词	CH4 conversion chemical looping reforming Fe-based OCs garnet oxygen vacancy formation energy
ISSN号	2155-5435
DOI	10.1021/acscatal.9b02730
通讯作者	Tian, Ming(tm1982@dicp.ac.cn) ; Wang, Xiaodong(xdwang@dicp.ac.cn)
英文摘要	It is of great significance to improve the syngas selectivity of Fe-based oxygen carriers (OCs), because of their sufficient lattice oxygen, low cost, and environmental compatibility in chemical looping partial oxidation of CH4. In this work, it was found that the addition of Y could remarkably increase CO selectivity of Fe2O3/Al2O3 to 98% with a CH4 conversion of , similar to 90%. X-ray diffraction (XRD) and transmission electron microscopy (TEM) characterizations combined with Mossbauer spectroscopy illustrated that the incorporation of Y led to the Fe species gradually transferring from Fe2O3 into the garnet structure (Y3Fe2Al3O12), a newly formed phase, which was found to be highly active for syngas generation. Density functional theory (DFT) calculations demonstrated that such a high CO selectivity of confined Fe species in garnet originated from enhanced oxygen vacancy formation energy (E-ov), compared with Fe2O3, which resulted from the lattice oxygen shared by not only reducible Fe ions but also nonreducible Al and Y ones in a garnet structure. Therefore, our work provides a meaningful guidance of new materials screening for methane partial oxidation in the chemical looping process.
资助项目	National Science Foundation of China (NSFC)[21406225] ; National Science Foundation of China (NSFC)[21573232] ; National Science Foundation of China (NSFC)[21676269] ; National Science Foundation of China (NSFC)[21706254] ; Postdoctoral Science Foundation of China[2014M561261]
WOS关键词	PEROVSKITE-TYPE OXIDES ; PARTIAL OXIDATION ; OXYGEN CARRIERS ; SYNTHESIS GAS ; REDOX CATALYSTS ; HIGH-PERFORMANCE ; LATTICE OXYGEN ; CO2 CONVERSION ; MIXED OXIDES ; COMBUSTION
WOS研究方向	Chemistry
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000485090400074
资助机构	National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; Postdoctoral Science Foundation of China ; Postdoctoral Science Foundation of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; Postdoctoral Science Foundation of China ; Postdoctoral Science Foundation of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; Postdoctoral Science Foundation of China ; Postdoctoral Science Foundation of China ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; 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/321008/172899]
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.Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Kang, Yu,Tian, Ming,Huang, Chuande,et al. Improving Syngas Selectivity of Fe2O3/Al2O3 with Yttrium Modification in Chemical Looping Methane Conversion[J]. ACS CATALYSIS,2019,9(9):8373-8382.
APA	Kang, Yu.,Tian, Ming.,Huang, Chuande.,Lin, Jian.,Hou, Baolin.,...&Wang, Xiaodong.(2019).Improving Syngas Selectivity of Fe2O3/Al2O3 with Yttrium Modification in Chemical Looping Methane Conversion.ACS CATALYSIS,9(9),8373-8382.
MLA	Kang, Yu,et al."Improving Syngas Selectivity of Fe2O3/Al2O3 with Yttrium Modification in Chemical Looping Methane Conversion".ACS CATALYSIS 9.9(2019):8373-8382.