High Efficiency Solar-based Catalytic Structure for CO{sub 2} Reforming

doi:10.2172/1121751

GSTDTAP > 地球科学

DOI	10.2172/1121751
报告编号	None
来源ID	OSTI ID: 1121751
	High Efficiency Solar-based Catalytic Structure for CO{sub 2} Reforming
	Menkara, Hisham
	2013-09-30
出版年	2013
语种	英语
国家	美国
领域	地球科学
英文摘要	Throughout this project, we developed and optimized various photocatalyst structures for CO{sub 2} reforming into hydrocarbon fuels and various commodity chemical products. We also built several closed-loop and continuous fixed-bed photocatalytic reactor system prototypes for a larger-scale demonstration of CO{sub 2} reforming into hydrocarbons, mainly methane and formic acid. The results achieved have indicated that with each type of reactor and structure, high reforming yields can be obtained by refining the structural and operational conditions of the reactor, as well as by using various sacrificial agents (hole scavengers). We have also demonstrated, for the first time, that an aqueous solution containing acid whey (a common bio waste) is a highly effective hole scavenger for a solar-based photocatalytic reactor system and can help reform CO{sub 2} into several products at once. The optimization tasks performed throughout the project have resulted in efficiency increase in our conventional reactors from an initial 0.02% to about 0.25%, which is 10X higher than our original project goal. When acid whey was used as a sacrificial agent, the achieved energy efficiency for formic acid alone was ~0.4%, which is 16X that of our original project goal and higher than anything ever reported for a solar-based photocatalytic reactor. Therefore, by carefully selecting sacrificial agents, it should be possible to reach energy efficiency in the range of the photosynthetic efficiency of typical crop and biofuel plants (1-3%).
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/6192
专题	地球科学
推荐引用方式 GB/T 7714	Menkara, Hisham. High Efficiency Solar-based Catalytic Structure for CO{sub 2} Reforming,2013.