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.

引用

页码：25425 / 25428

页数：4

共 33 条

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