Hyperpolarized Xe-129 NMR Spectroscopy Investigation of Metal Cation-Exchanged FAU Zeolites

	Hyperpolarized Xe-129 NMR Spectroscopy Investigation of Metal Cation-Exchanged FAU Zeolites
	Xu Shutao 1,2; Zhang Weiping 1; Han Xiuwen 1; Bao Xinhe 1
刊名	chinese journal of catalysis
	2009-09-01
卷号	30 期号:9 页码:945-950
关键词	hyperpolarized Xe-129 NMR solid-state NMR ion exchange FAU zeolite
英文摘要	continuous-flow hyperpolarized xe-129 nmr was used to investigate the influence of metal cation-exchanged faujasite (fau) zeolites on the xe-129 chemical shift. xe-129 is a sensitive probe molecule to detect the local electric field in a confined space originating from substituted metal cations with different electronic structures such as na+, ag+, cu+, cu2+, and cs+. it is found that na+ has less effect on the electric field gradient of the supercage in fau zeolites. the chemical shifts of xe in nax and nay have similar behavior. for cation with the nd(10) electronic structure such as ag+ or cu+, there is specific d(pi)-d(pi) interaction between metal cations and the xe atom, which leads to the upfield of xe chemical shift. for cu2+, its partial paramagnetism results in the broadening of xe nmr spectra or even disappearance of the xe-129 signal in the supercage. for cs+, whose cation has the same electronic structure as the xe atom, it may adsorb more xe atoms in the supereage of fau zeolites, leading to the downfield of xe chemical shift.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; engineering, chemical
研究领域[WOS]	chemistry ; engineering
关键词[WOS]	nanosized hzsm-5 zeolite ; cu-y zeolites ; microporous structure ; xenon ; desulfurization ; reduction ; atoms ; probe ; ions ; nay
收录类别	SCI
语种	英语
WOS记录号	WOS:000271079600017
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/141461]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Stale Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xu Shutao,Zhang Weiping,Han Xiuwen,et al. Hyperpolarized Xe-129 NMR Spectroscopy Investigation of Metal Cation-Exchanged FAU Zeolites[J]. chinese journal of catalysis,2009,30(9):945-950.
APA	Xu Shutao,Zhang Weiping,Han Xiuwen,&Bao Xinhe.(2009).Hyperpolarized Xe-129 NMR Spectroscopy Investigation of Metal Cation-Exchanged FAU Zeolites.chinese journal of catalysis,30(9),945-950.
MLA	Xu Shutao,et al."Hyperpolarized Xe-129 NMR Spectroscopy Investigation of Metal Cation-Exchanged FAU Zeolites".chinese journal of catalysis 30.9(2009):945-950.