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Direct synthesis, characterization and catalytic activity of titanium-substituted SBA-15 mesoporous molecular sieves
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
2004-10-08
DOI10.1016/j.apcata.2004.06.030
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
关键词[WOS]HYDROTHERMAL CONDITIONS ; SILICA ; ZEOLITES ; EPOXIDATION ; SURFACTANTS ; OXIDATION ; TEMPLATE
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.
语种英语
WOS记录号WOS:000223959200022
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139594
专题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.Dalian Univ Technol, State Key Lab Fine Chem Engn, Dalian 116012, Peoples R China
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GB/T 7714
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.
APA Chen, YY,Huang, YL,Xiu, JH,Han, XW,&Bao, XH.(2004).Direct synthesis, characterization and catalytic activity of titanium-substituted SBA-15 mesoporous molecular sieves.APPLIED CATALYSIS A-GENERAL,273(1-2),185-191.
MLA Chen, YY,et al."Direct synthesis, characterization and catalytic activity of titanium-substituted SBA-15 mesoporous molecular sieves".APPLIED CATALYSIS A-GENERAL 273.1-2(2004):185-191.
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