Effect of surface modification on silica supported Ti catalysts for cyclohexene oxidation with vapor-phase hydrogen peroxide

被引：0
|
作者：
Ahn, Sol [1 ]
Friedman, Sarah K. [2 ]
Notestein, Justin M. [2 ,3 ]
机构：
[1] Chung Ang Univ, Dept Chem Engn, 84 Heukseok Ro, Seoul 06974, South Korea
[2] Dept Chem & Biol Engn, Tuscaloosa, AL 35487 USA
[3] Ctr Catalysis & Surface Sci, 2145 Sheridan Rd, Evanston, IL 60208 USA
来源：
RSC ADVANCES | 2024年 / 14卷 / 35期
关键词：
EPOXIDATION; ACIDITY;
D O I：
10.1039/d4ra04552a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Surface modification via grafting of organic moieties on a Lewis acid catalyst (silica supported Ti catalyst, Ti-SiO2) alters the activation of H2O2 in vapor-phase cyclohexene epoxidation. Grafting a fluorous group (1H,1H-perfluoro-octyl) suppresses activity of Ti-SiO2. Conversely, grafting either a nonpolar group (octyl) or a polar aprotic group (triethylene glycol monomethyl ether) enhances rates and shifts selectivity toward trans-1,2-cyclohexanediol. A methodology of modifying surface properties of a Lewis acid catalyst for cyclohexene oxidation with vapor-phase H2O2.
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页码：25425 / 25428
页数：4
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