C-C Bond Formation in Syngas Conversion over Zinc Sites Grafted on ZSM-5 Zeolite

doi:10.1002/anie.201912869

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	C-C Bond Formation in Syngas Conversion over Zinc Sites Grafted on ZSM-5 Zeolite
	Chen, YX ; Gong, K ; Jiao, F ; Pan, XL ; Hou, GJ ; Si, R ; Bao, XH
刊名	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
	2020
卷号	59 期号:16 页码:6529-6534
关键词	PROPANE AROMATIZATION SELECTIVE CONVERSION REDUCING CATALYST LIGHT OLEFINS SYNTHESIS GAS ACTIVE-SITES PARA-XYLENE SOLID ACID HIGH-FIELD METHANOL
ISSN号	1433-7851
DOI	10.1002/anie.201912869
文献子类	期刊论文
英文摘要	Despite significant progress achieved in Fischer-Tropsch synthesis (FTS) technology, control of product selectivity remains a challenge in syngas conversion. Herein, we demonstrate that Zn2+-ion exchanged ZSM-5 zeolite steers syngas conversion selectively to ethane with its selectivity reaching as high as 86 % among hydrocarbons (excluding CO2) at 20 % CO conversion. NMR spectroscopy, X-ray absorption spectroscopy, and X-ray fluorescence indicate that this is likely attributed to the highly dispersed Zn sites grafted on ZSM-5. Quasi-in-situ solid-state NMR, obtained by quenching the reaction in liquid N-2, detects C-2 species such as acetyl (-COCH3) bonding with an oxygen, ethyl (-CH2CH3) bonding with a Zn site, and epoxyethane molecules adsorbing on a Zn site and a Bronsted acid site of the catalyst, respectively. These species could provide insight into C-C bond formation during ethane formation. Interestingly, this selective reaction pathway toward ethane appears to be general because a series of other Zn2+-ion exchanged aluminosilicate zeolites with different topologies (for example, SSZ-13, MCM-22, and ZSM-12) all give ethane predominantly. By contrast, a physical mixture of ZnO-ZSM-5 favors formation of hydrocarbons beyond C3+. These results provide an important guide for tuning the product selectivity in syngas conversion.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32741]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat 2011, State Key Lab Catalysis,Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen, YX,Gong, K,Jiao, F,et al. C-C Bond Formation in Syngas Conversion over Zinc Sites Grafted on ZSM-5 Zeolite[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2020,59(16):6529-6534.
APA	Chen, YX.,Gong, K.,Jiao, F.,Pan, XL.,Hou, GJ.,...&Bao, XH.(2020).C-C Bond Formation in Syngas Conversion over Zinc Sites Grafted on ZSM-5 Zeolite.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,59(16),6529-6534.
MLA	Chen, YX,et al."C-C Bond Formation in Syngas Conversion over Zinc Sites Grafted on ZSM-5 Zeolite".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 59.16(2020):6529-6534.