High-temperature isothermal chemical cycling for solar-driven fuel production

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	High-temperature isothermal chemical cycling for solar-driven fuel production
	Hao, Yong 1,2; Yang, Chih-Kai 1; Haile, Sossina M.1
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2013
卷号	15 期号:40 页码:17084-17092
英文摘要	The possibility of producing chemical fuel (hydrogen) from the solar-thermal energy input using an isothermal cycling strategy is explored. The canonical thermochemical reactive oxide, ceria, is reduced under high temperature and inert sweep gas, and in the second step oxidized by H2O at the same temperature. The process takes advantage of the oxygen chemical potential difference between the inert sweep gas and high-temperature steam, the latter becoming more oxidizing with increasing temperature as a result of thermolysis. The isothermal operation relieves the need to achieve high solid-state heat recovery for high system efficiency, as is required in a conventional two-temperature process. Thermodynamic analysis underscores the importance of gas-phase heat recovery in the isothermal approach and suggests that attractive efficiencies may be practically achievable on the system level. However, with ceria as the reactive oxide, the isothermal approach is not viable at temperatures much below 1400 degrees C irrespective of heat recovery. Experimental investigations show that an isothermal cycle performed at 1500 degrees C can yield fuel at a rate of similar to 9.2 ml g(-1) h(-1), while providing exceptional system simplification relative to two-temperature cycling.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Chemistry ; Physics
关键词[WOS]	NONSTOICHIOMETRIC CERIA ; HYDROGEN-PRODUCTION ; H-2 GENERATION ; WATER ; CO2 ; H2O ; ENERGY ; OXIDES ; OXYGEN
收录类别	SCI
语种	英语
WOS记录号	WOS:000325398500009
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/98877]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.CALTECH, Pasadena, CA 91125 USA 2.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Hao, Yong,Yang, Chih-Kai,Haile, Sossina M.. High-temperature isothermal chemical cycling for solar-driven fuel production[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2013,15(40):17084-17092.
APA	Hao, Yong,Yang, Chih-Kai,&Haile, Sossina M..(2013).High-temperature isothermal chemical cycling for solar-driven fuel production.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,15(40),17084-17092.
MLA	Hao, Yong,et al."High-temperature isothermal chemical cycling for solar-driven fuel production".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 15.40(2013):17084-17092.