Direct synthesis of highly ordered Fe-SBA-15 mesoporous materials under weak acidic conditions

	Direct synthesis of highly ordered Fe-SBA-15 mesoporous materials under weak acidic conditions
	Li, Y; Feng, ZC; Lian, YX; Sun, KQ; Zhang, L; Jia, GQ; Yang, QH; Li, C
刊名	microporous and mesoporous materials
	2005-09-15
卷号	84 期号:1-3 页码:41-49
关键词	Fe-SBA-15 mesoporous materials isolated iron ions salt effect UV resonance Raman spectra
通讯作者	杨启华 ; 李灿
产权排序	1;1
英文摘要	iron-substituted sba-15 (fe-sba-15) materials have been synthesized via a simple direct hydrothermal method under weak acidic conditions. the powder x-ray diffraction (xrd), nz sorption and transmission electron microscopy (tem) characterizations show that the resultant materials have well-ordered hexagonal meso-structures. the diffused reflectance uv-vis and uv resonance raman spectroscopy characterizations show that most of the iron ions exist as isolated framework species for calcined materials when the fe/si molar ratios are below 0.01 in the gel. the presence of iron species also has significant salt effects that can greatly improve the ordering of the mesoporous structure. different iron species including isolated framework iron species, extraframework iron clusters and iron oxides are formed selectively by adjusting the ph values of the synthesis solutions and fe/si molar ratios. (c) 2005 elsevier inc. all rights reserved.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary
研究领域[WOS]	chemistry ; science & technology - other topics ; materials science
关键词[WOS]	resonance raman-spectroscopy ; molecular-sieves ; catalytic performance ; room-temperature ; aqueous-solution ; nitrous-oxide ; ts-1 zeolite ; sba-15 ; silica ; titanium
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000232036300006
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/92501]
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	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	Li, Y,Feng, ZC,Lian, YX,et al. Direct synthesis of highly ordered Fe-SBA-15 mesoporous materials under weak acidic conditions[J]. microporous and mesoporous materials,2005,84(1-3):41-49.
APA	Li, Y.,Feng, ZC.,Lian, YX.,Sun, KQ.,Zhang, L.,...&Li, C.(2005).Direct synthesis of highly ordered Fe-SBA-15 mesoporous materials under weak acidic conditions.microporous and mesoporous materials,84(1-3),41-49.
MLA	Li, Y,et al."Direct synthesis of highly ordered Fe-SBA-15 mesoporous materials under weak acidic conditions".microporous and mesoporous materials 84.1-3(2005):41-49.