Direct Detection of Supramolecular Reaction Centers in the Methanolto- Olefins Conversion over Zeolite H-ZSM-5 by C-13-Al-27 Solid-State NMR Spectroscopy

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 磁共振应用研究部

	Direct Detection of Supramolecular Reaction Centers in the Methanolto- Olefins Conversion over Zeolite H-ZSM-5 by C-13-Al-27 Solid-State NMR Spectroscopy
	Wang, Chao; Wang, Qiang; Xu, Jun; Qi, Guodong; Gao, Pan; Wang, Weiyu; Zou, Yunyun; Feng, Ningdong; Liu, Xiaolong; Deng, Feng
刊名	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
	2016-02-12
卷号	55 期号:7 页码:2507-2511
关键词	host-guest interactions hydrocarbon pool methanol conversion NMR spectroscopy zeolites
英文摘要	Hydrocarbon-pool chemistry is important in methanol to olefins (MTO) conversion on acidic zeolite catalysts. The hydrocarbon-pool (HP) species, such as methylbenzenes and cyclic carbocations, confined in zeolite channels during the reaction are essential in determining the reaction pathway. Herein, we experimentally demonstrate the formation of supramolecular reaction centers composed of organic hydrocarbon species and the inorganic zeolite framework in HZSM- 5 zeolite by advanced 13C-27Al double-resonance solidstate NMR spectroscopy. Methylbenzenes and cyclic carbocations located near Bronsted acid/ base sites form the supramolecular reaction centers in the zeolite channel. The internuclear spatial interaction/ proximity between the 13C nuclei (associated with HP species) and the 27Al nuclei (associated with Bronsted acid/ base sites) determines the reactivity of the HP species. The closer the HP species are to the zeolite framework Al, the higher their reactivity in the MTO reaction.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
关键词[WOS]	HYDROCARBON-POOL ; PRODUCT SELECTIVITY ; TO-HYDROCARBONS ; CATALYSIS ; HSAPO-34 ; MECHANISM ; HZSM-5 ; ETHENE ; ION
收录类别	SCI
语种	英语
WOS记录号	WOS:000369970500038
公开日期	2016-04-26
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/9193]
专题	武汉物理与数学研究所_磁共振应用研究部
作者单位	Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Natl Ctr Magnet Resonance Wuhan, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chao,Wang, Qiang,Xu, Jun,et al. Direct Detection of Supramolecular Reaction Centers in the Methanolto- Olefins Conversion over Zeolite H-ZSM-5 by C-13-Al-27 Solid-State NMR Spectroscopy[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2016,55(7):2507-2511.
APA	Wang, Chao.,Wang, Qiang.,Xu, Jun.,Qi, Guodong.,Gao, Pan.,...&Deng, Feng.(2016).Direct Detection of Supramolecular Reaction Centers in the Methanolto- Olefins Conversion over Zeolite H-ZSM-5 by C-13-Al-27 Solid-State NMR Spectroscopy.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,55(7),2507-2511.
MLA	Wang, Chao,et al."Direct Detection of Supramolecular Reaction Centers in the Methanolto- Olefins Conversion over Zeolite H-ZSM-5 by C-13-Al-27 Solid-State NMR Spectroscopy".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 55.7(2016):2507-2511.