Post-grafting preparation of large-pore mesoporous materials with localized high content titanium doping

	Post-grafting preparation of large-pore mesoporous materials with localized high content titanium doping
	Hua, ZL ; Bu, WB ; Lian, YX ; Chen, HR ; Li, L ; Zhang, LX ; Li, C ; Shi, JL
刊名	journal of materials chemistry
	2005
卷号	15 期号:6 页码:661-665
通讯作者	zile hua
产权排序	2;3
英文摘要	a new post-grafting process, consisting of two steps of substrate preparation and sol - gel post-grafting, has been developed to prepare titanium-doped mesoporous sba-15 material with a double-layered structure and locally concentrated titanium content at the inner pore surface. with this novel technique, the single phased and originally ordered mesostructures can be well conserved; in the conventional direct synthesis they can be partially damaged when the frameworks are doped with high content heteroatoms. titanium species exist in an isolated, tetrahedral structure and are localized at the pore surface; this is beneficial to both reactant access and product release. characterization with xrd, n-2 adsorption/desorption isotherms, hrem/ eds, icp, uv - vis, and the newly developed uv - raman spectroscopy confirm these results. preliminary catalytic tests with the selective epoxidation of cyclohexene show good catalytic activity. among them, sample tisba-15-10 with a si : ti molar ratio of 10 shows a ton value of 75 and a highest product ( epoxide) yield of 55%.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; materials science, multidisciplinary
研究领域[WOS]	chemistry ; materials science
关键词[WOS]	resonance raman-spectroscopy ; molecular-sieve sba-15 ; silica mixed oxides ; sol-gel ; catalysis ; copolymer ; oxidation ; triblock ; carbon
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000226703500005
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/93037]
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, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Hua, ZL,Bu, WB,Lian, YX,et al. Post-grafting preparation of large-pore mesoporous materials with localized high content titanium doping[J]. journal of materials chemistry,2005,15(6):661-665.
APA	Hua, ZL.,Bu, WB.,Lian, YX.,Chen, HR.,Li, L.,...&Shi, JL.(2005).Post-grafting preparation of large-pore mesoporous materials with localized high content titanium doping.journal of materials chemistry,15(6),661-665.
MLA	Hua, ZL,et al."Post-grafting preparation of large-pore mesoporous materials with localized high content titanium doping".journal of materials chemistry 15.6(2005):661-665.