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A Novel CeO2-xSnO(2)/Ce2Sn2O7 Pyrochlore Cycle for Enhanced Solar Thermochemical Water Splitting
Ruan, Chongyan1,2; Tan, Yuan1,2; Li, Lin1; Wang, Junhu1; Liu, Xiaoyan1; Wang, Xiaodong1
KeywordSolar Fuel Pyrochlore Stoichiometric Water Splitting H-2 Production
Source PublicationAICHE JOURNAL
2017-08-01
DOI10.1002/aic.15701
Volume63Issue:8Pages:3450-3462
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectEngineering, Chemical
WOS Research AreaEngineering
WOS KeywordACCEPTOR-DOPED CERIA ; HYDROGEN-PRODUCTION ; X-RAY ; SOLID-SOLUTION ; FUEL PRODUCTION ; REDOX REACTIONS ; RADIATION TOLERANCE ; ENERGY-CONVERSION ; SYNGAS PRODUCTION ; COMPLEX OXIDES
AbstractA novel CeO2-xSnO(2)/Ce2Sn2O7 pyrochlore stoichiometric redox cycle with superior H-2 production capacities is identified and corroborated for two-step solar thermochemical water splitting (STWS). During the first thermal reduction step (1400 degrees C), a reaction between CeO2 and SnO2 occurred for all the CeO2-xSnO(2) (x = 0.05-0.20) solid compounds, forming thermodynamically stable Ce2Sn2O7 pyrochlore rather than metastable CeO2-delta. Consequently, substantially higher reduction extents were achieved owing to the reduction of Ce-IV to Ce-III. Moreover, in the subsequent reoxidation with H2O (800 degrees C), H-2 production capacities increased by a factor of 3.8 as compared to the current benchmark material ceria when x = 0.15, with the regeneration of CeO2 and SnO2 and the concomitant reoxidation of Ce-III to Ce-IV. The H2O-splitting performance for CeO2-0.15SnO(2) was reproducible over seven consecutive redox cycles, indicating the material was also robust. (C) 2017 American Institute of Chemical Engineers
Language英语
WOS IDWOS:000407120800015
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/149795
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ruan, Chongyan,Tan, Yuan,Li, Lin,et al. A Novel CeO2-xSnO(2)/Ce2Sn2O7 Pyrochlore Cycle for Enhanced Solar Thermochemical Water Splitting[J]. AICHE JOURNAL,2017,63(8):3450-3462.
APA Ruan, Chongyan,Tan, Yuan,Li, Lin,Wang, Junhu,Liu, Xiaoyan,&Wang, Xiaodong.(2017).A Novel CeO2-xSnO(2)/Ce2Sn2O7 Pyrochlore Cycle for Enhanced Solar Thermochemical Water Splitting.AICHE JOURNAL,63(8),3450-3462.
MLA Ruan, Chongyan,et al."A Novel CeO2-xSnO(2)/Ce2Sn2O7 Pyrochlore Cycle for Enhanced Solar Thermochemical Water Splitting".AICHE JOURNAL 63.8(2017):3450-3462.
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