DICP OpenIR
Effect of Regeneration Period on the Selectivity of Synthesis Gas of Ba-Hexaaluminates in Chemical Looping Partial Oxidation of Methane
Shen, Qianqian1,2; Huang, Fei3; Tian, Ming1; Zhu, Yanyan2; Li, Lin1; Wang, Junhu1; Wang, Xiaodong1
Corresponding AuthorTian, Ming(tm1982@dicp.ac.cn) ; Zhu, Yanyan(yanyanzhu2006@126.com) ; Wang, Xiaodong(xdwang@dicp.ac.cn)
KeywordCH4 conversion chemical looping partial oxidation improvement of syngas regeneration period Ba-hexaaluminate
Source PublicationACS CATALYSIS
2019
ISSN2155-5435
DOI10.1021/acscatal.8b03855
Volume9Issue:1Pages:722-731
Funding ProjectNational Science Foundation of China (NSFC)[21303137] ; 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] ; National Science Foundation of China (NSFC)[21808033] ; Postdoctoral Science Foundation of China[2014M561261]
Funding OrganizationNational 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
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordSHELL REDOX CATALYST ; BARIUM HEXAALUMINATE ; OXYGEN-CARRIER ; CRYSTALLOGRAPHIC SITES ; MIXED OXIDES ; FE ; SYNGAS ; PERFORMANCE ; PEROVSKITES ; CONVERSION
AbstractChemical looping partial oxidation of CH4 is a promising method for producing syngas with a suitable H-2/CO ratio and avoiding the risk of explosion and use of an expensive air separation plant. However, regeneration of reduced oxygen carriers (OCs) by O-2 usually leads to the enrichment of surface electrophilic O2- or O- species and thus CO2 formation and a decrease in total CO selectivity. In this work, it was found that the CO selectivity of the BaFe3Al9O19 hexaaluminate (BF(3)A) OC was greatly improved from 58% to 83% by tuning the regeneration period, with a CH4 conversion of 86%, an H-2/CO ratio of 2, and a syngas yield of 4.2 mmol/g without significant carbon deposition. This resulted from the decrease in regeneration time (from 15 to 4.2 min), leading to a decrease in Fe3+ in Al(1), Al(2), and Al(3) sites (Fe-1, Fe-2, and Fe-3) active for combustion of CH4 and an increase in reduced Fe2+ to Fe-0 responsible for the partial oxidation of CH4. Consequently, the amount of CO2 decreased while that of CO increased significantly. In addition, unoxidized surface Fe-0 resulting from shorter regeneration periods (5 and 4.2 min) acted as catalysts for dry reforming of CH4 and CO2 at the beginning of the reaction, which also contributed to the increase in CO formation for these two samples.
Language英语
Funding OrganizationNational 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
WOS IDWOS:000455286600074
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/166193
Collection中国科学院大连化学物理研究所
Corresponding AuthorTian, Ming; Zhu, Yanyan; Wang, Xiaodong
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Northwest Univ, Coll Chem Engn, 229 Taibai Bei Rd, Xian 710069, Shaanxi, Peoples R China
3.Fujian Normal Univ, 8 Shangsan Rd, Fuzhou 350007, Fujian, Peoples R China
Recommended Citation
GB/T 7714
Shen, Qianqian,Huang, Fei,Tian, Ming,et al. Effect of Regeneration Period on the Selectivity of Synthesis Gas of Ba-Hexaaluminates in Chemical Looping Partial Oxidation of Methane[J]. ACS CATALYSIS,2019,9(1):722-731.
APA Shen, Qianqian.,Huang, Fei.,Tian, Ming.,Zhu, Yanyan.,Li, Lin.,...&Wang, Xiaodong.(2019).Effect of Regeneration Period on the Selectivity of Synthesis Gas of Ba-Hexaaluminates in Chemical Looping Partial Oxidation of Methane.ACS CATALYSIS,9(1),722-731.
MLA Shen, Qianqian,et al."Effect of Regeneration Period on the Selectivity of Synthesis Gas of Ba-Hexaaluminates in Chemical Looping Partial Oxidation of Methane".ACS CATALYSIS 9.1(2019):722-731.
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