Highly effective methylated Ti MCM-41 catalyst for cyclohexene oxidation

被引：19
|
作者：
Roy, Sushanta Kumar [1 ]
Dutta, Debajani [1 ]
Talukdar, Anup K. [1 ]
机构：
[1] Gauhati Univ, Dept Chem, Gauhati 781014, Assam, India
来源：
MATERIALS RESEARCH BULLETIN | 2018年 / 103卷
关键词：
TiMCM-41; Organofunctionalization; Cyclohexene; Epoxidation; SILICATE MOLECULAR-SIEVES; MESOPOROUS SILICA; SELECTIVE OXIDATION; HYDROGEN-PEROXIDE; STYRENE OXIDATION; BETA CATALYST; EPOXIDATION; TI-MCM-41; PERFORMANCE; NANOPARTICLES;
D O I：
10.1016/j.materresbull.2018.03.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of Ti containing MCM-41 materials were synthesized with different Si/Ti molar ratios and tested for cyclohexene epoxidation reaction. TiMCM-41 with Si/Ti ratio 40 which gave maximum conversion and selectivity to epoxide was methylated with methyltriethoxysilane (MTES) in this reaction. Accordingly, four different methyl loading (5, 10, 15 and 20 mol % of MTES w.r.t. TEOS) TiMCM-41(Si/Ti 40) samples were prepared. The materials were characterized by different physical techniques such as PXRD, FT-IR spectroscopy, UV-vis DRS spectroscopy, N-2 adsorption-desorption isotherm, SEM-EDX, TEM, TGA and ICP-OES. The catalysts were then tested for cyclohexene epoxidation reaction in the presence of H2O2 avoiding TBHP. The conversion and selectivity for cyclohexene obtained with 10MeTiM-1 (Si/Ti 40) were found to be the best not only among the catalysts investigated in the present work, but also among all the catalysts studied so far for the reaction.
引用
收藏
页码：38 / 46
页数：9
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