A porous V/SiO2 sphere composite for the selective oxidation of benzyl alcohol to benzaldehyde in aqueous phase through peroxymonosulfate activation

被引：19

作者：

Wu, Yan ^{[1
]}

Kong, Ling-Hui ^{[1
]}

Ge, Wen-Ting ^{[1
]}

Zhang, Wen-Jie ^{[1
]}

Dong, Zhen-Yue ^{[1
]}

Guo, Xiao-Jing ^{[1
]}

Yan, Xi ^{[1
]}

Chen, Yan ^{[1
]}

Lang, Wan-Zhong ^{[1
]}

机构：

[1] Shanghai Normal Univ, Shanghai Key Lab Rare Earth Funct Mat, Dept Chem & Chem Engn, Educ Minist,Key Lab Resource Chem, 100 Guilin Rd, Shanghai 200234, Peoples R China

来源：

JOURNAL OF CATALYSIS | 2022年 / 413卷

基金：

中国国家自然科学基金; 上海市自然科学基金;

关键词：

Benzyl alcohol; Benzaldehyde; Selective oxidation; Vanadium; Peroxymonosulfate; Solvent; SOLVENT-FREE OXIDATION; AEROBIC OXIDATION; EFFICIENT CATALYSTS; MOLECULAR-OXYGEN; HETEROGENEOUS OXIDATION; ALLOY NANOPARTICLES; ORGANIC POLLUTANTS; HYDROGEN-PEROXIDE; BISPHENOL-A; DEGRADATION;

D O I：

10.1016/j.jcat.2022.07.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A porous V/SiO2 sphere composite (VOX@SiO2) was synthesized using one-step sol-gel method. Benefiting from the redox properties of vanadium and the hydrophilic property, VOX@SiO2 showed good catalytic performances for the selective oxidation of benzyl alcohol (BzOH) to benzaldehyde (BzH) in aqueous phase through peroxymonosulfate (PMS) activation, and performed far better in water than in various organic solvents. The redox cycle of V-V/V-IV was supposed to be responsible for PMS decomposition in the VOX@SiO2/PMS system. The SO4 center dot-, O-1(2) and mediated electron transfer were revealed to play a major role in the selective oxidation of BzOH to BzH. The intrinsic kinetics was analyzed to calculate the chemical reaction rate (r(a)) and reaction order (n = 0.33) with respect to BzOH. This study provided some insights into the development of vanadium-based heterogeneous catalyst for the selective oxidation of BzOH to BzH through PMS activation. (C) 2022 Elsevier Inc. All rights reserved.

引用

页码：668 / 680

页数：13

共 79 条

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