Cu-Y2O3 Catalyst Derived from Cu2Y2O5 Perovskite for Water Gas Shift Reaction: The Effect of Reduction Temperature

doi:10.3390/catal12050481

GIEC OpenIR

	Cu-Y2O3 Catalyst Derived from Cu2Y2O5 Perovskite for Water Gas Shift Reaction: The Effect of Reduction Temperature
	Wang, Zeyu 1,2; Luo, Fengying 1,2; Wang, Nan 1; Li, Xinjun1
	2022-05-01
发表期刊	CATALYSTS
卷号	12 期号:5 页码:14
通讯作者	Li, Xinjun(lixj@ms.giec.ac.cn)
摘要	Cu2Y2O5 perovskite was reduced at different temperatures under H-2 atmosphere to prepare two Cu-Y2O3 catalysts. The results of the activity test indicated that the Cu-Y2O3 catalyst after H-2-reduction at 500 degrees C (RCYO-500) exhibited the best performance in the temperature range from 100 to 180 degrees C for water gas shift (WGS) reaction, with a CO conversion of 57.30% and H-2 production of 30.67 mu mol center dot g(cat)(-1)center dot min(-1) at 160 degrees C and a gas hourly space velocity (GHSV) of 6000 mL center dot g(cat)(-1)center dot h(-1). The catalyst reduced at 320 degrees C (RCYO-320) performed best at the temperature range from 180 to 250 degrees C, which achieved 86.44% CO conversion and 54.73 mu mol center dot g(cat)(-1)center dot min(-1) H-2 production at 250 degrees C. Both of the Cu-Y2O3 catalysts had similar structures including Cu degrees, Cu+, oxygen vacancies (Vo) on the Cu degrees-Cu+ interface and Y2O3 support. RCYO-500, with a mainly exposed Cu degrees (100) facet, was active in the low-temperature WGS reaction, while the WGS activity of RCYO-320, which mainly exposed the Cu degrees (111) facet, was greatly enhanced above 180 degrees C. Different Cu degrees facets have different abilities to absorb H2O and then dissociate it to form hydroxyl groups, which is the main step affecting the catalytic rate of the WGS reaction.
关键词	Cu2Y2O5 perovskite reduction temperature Cu-Y2O3 catalyst water gas shift reaction Cu degrees facet
DOI	10.3390/catal12050481
关键词[WOS]	COPPER-CATALYSTS ; WGS REACTION ; METAL-OXIDE ; OPTIMIZATION ; MECHANISM ; SURFACES ; OXYGEN
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2021YFC1910404] ; Natural Science Foundation of Guangdong Province, China[2021 A1515010445] ; Science and Technology Program of Guangzhou, China[202102020402]
WOS研究方向	Chemistry
项目资助者	National Key R&D Program of China ; Natural Science Foundation of Guangdong Province, China ; Science and Technology Program of Guangzhou, China
WOS类目	Chemistry, Physical
WOS记录号	WOS:000803603500001
出版者	MDPI
引用统计
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/36666
专题	中国科学院广州能源研究所
通讯作者	Li, Xinjun
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Wang, Zeyu,Luo, Fengying,Wang, Nan,et al. Cu-Y2O3 Catalyst Derived from Cu2Y2O5 Perovskite for Water Gas Shift Reaction: The Effect of Reduction Temperature[J]. CATALYSTS,2022,12(5):14.
APA	Wang, Zeyu,Luo, Fengying,Wang, Nan,&Li, Xinjun.(2022).Cu-Y2O3 Catalyst Derived from Cu2Y2O5 Perovskite for Water Gas Shift Reaction: The Effect of Reduction Temperature.CATALYSTS,12(5),14.
MLA	Wang, Zeyu,et al."Cu-Y2O3 Catalyst Derived from Cu2Y2O5 Perovskite for Water Gas Shift Reaction: The Effect of Reduction Temperature".CATALYSTS 12.5(2022):14.