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题名: Direct synthesis, characterization and catalytic activity of titanium-substituted SBA-15 mesoporous molecular sieves
作者: Chen, YY;  Huang, YL;  Xiu, JH;  Han, XW;  Bao, XH
关键词: Ti-SBA-15 ;  TiCl3 ;  prehydrolysis ;  styrene ;  oxidation
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2004-10-08
DOI: 10.1016/j.apcata.2004.06.030
卷: 273, 期:1-2, 页:185-191
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: Titanium-substituted SBA-15 mesoporous molecular sieves have been successfully synthesized under conventional hydrothermal conditions by using titanium trichloride and tetraethyl orthosilicate as titanium and silica source, respectively. The synthesized materials were characterized by powder X-ray diffraction patterns (XRD), diffuse reflectance UV-visible spectroscopy (UV-vis), X-ray fluorescence spectroscopy (XRF), N-2 sorption isotherms and the reaction of catalytic oxidation of styrene. When the pH value of the gel solution was approximately 1.8 and titanium chloride was added after prehydrolysis of tetraethyl orthosilicate for a certain time, the titanium could be effectively incorporated into the framework of SBA-15. The Ti-SBA-15 so obtained was of high quality. With the present synthesis approach, the formation of anatase TiO2 in Ti-SBA-15 can be avoided. Moreover, the addition of H2O2 during the preparation process can improve the quality of Ti-SBA-15. The calcined Ti-SBA-15 materials showed high catalytic activity in the selective oxidation of styrene. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: HYDROTHERMAL CONDITIONS ;  SILICA ;  ZEOLITES ;  EPOXIDATION ;  SURFACTANTS ;  OXIDATION ;  TEMPLATE
语种: 英语
WOS记录号: WOS:000223959200022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139594
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Dalian Univ Technol, State Key Lab Fine Chem Engn, Dalian 116012, Peoples R China

Recommended Citation:
Chen, YY,Huang, YL,Xiu, JH,et al. Direct synthesis, characterization and catalytic activity of titanium-substituted SBA-15 mesoporous molecular sieves[J]. APPLIED CATALYSIS A-GENERAL,2004,273(1-2):185-191.
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