NMR study on the acidity of TS-1 zeolite

	NMR study on the acidity of TS-1 zeolite
	Zhuang, JQ ; Yan, ZM ; Liu, XM ; Liu, XC ; Han, XW ; Bao, XH ; Mueller, U
刊名	catalysis letters
	2002-10-01
卷号	83 期号:1-2 页码:87-91
关键词	TS-1 zeolite solid-state MAS NMR acidity
英文摘要	the acidic properties of ts-1 and silicalite-i zeolites have been investigated by the solid-state mas nmr technique capable of in situ sample pretreatment. as shown by a combination of the p-31 mas nmr and h-1 mas nmr techniques with trimethylphosphine, not only bronsted acid sites but also lewis acid sites exist in the ts-1 zeolites. moreover, ts-1 zeolite is more acidic compared with silicalite-1. the h-1, si-29 mas nmr spectra and the resonance related to bronsted acid species in the p-31 mas nmr spectra demonstrate clearly that the presence of titanium in the framework results in the formation of a new hydroxy group, titanols, which is more acidic than silanols of silicalite-1. the p-31 mas nmr measurements also illustrate convincingly the existence of at least two different lewis acid species on the ts-1 zeolites. the conversion of propylene oxide into methoxypropanol catalyzed by ts-1 or silicalite-i zeolite in methanol solution as a test reaction has also been described. with the increase of titanium in zeolite, ts-1 appears to have a higher activity during the reaction of propylene oxide to methoxypropanol.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
关键词[WOS]	solid-state nmr ; nuclear-magnetic-resonance ; mas nmr ; surface-acidity ; silica-aluminas ; cavern design ; proton nmr ; spectroscopy ; sites ; dehydration
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000178619000016
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/84889]
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, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.BASF AG, Chem Res & Engn, Zeolite Catalysis, D-67056 Ludwigshafen, Germany
推荐引用方式 GB/T 7714	Zhuang, JQ,Yan, ZM,Liu, XM,et al. NMR study on the acidity of TS-1 zeolite[J]. catalysis letters,2002,83(1-2):87-91.
APA	Zhuang, JQ.,Yan, ZM.,Liu, XM.,Liu, XC.,Han, XW.,...&Mueller, U.(2002).NMR study on the acidity of TS-1 zeolite.catalysis letters,83(1-2),87-91.
MLA	Zhuang, JQ,et al."NMR study on the acidity of TS-1 zeolite".catalysis letters 83.1-2(2002):87-91.