Redox behavior and oxidation catalysis of HnXW12O40 (X = Co2+, B3+, Si4+, and P5+) Keggin heteropolyacid catalysts

被引：19

作者：

Choi, Jung Ho ^{[1
]}

Kang, Tae Hun ^{[1
]}

Song, Ji Hwan ^{[1
]}

Bang, Yongju ^{[1
]}

Song, In Kyu ^{[1
]}

机构：

[1] Seoul Natl Univ, Inst Chem Proc, Sch Chem & Biol Engn, Seoul 151744, South Korea

来源：

CATALYSIS COMMUNICATIONS | 2014年 / 43卷

基金：

新加坡国家研究基金会;

关键词：

Heteropolyacid; Redox behavior; Reduction potential; Oxidation of benzaldehyde; ACIDS; POTENTIALS; LIQUID;

D O I：

10.1016/j.catcom.2013.09.015

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：

Redox behavior and oxidation catalysis of HnXW12O40 (X = Co2+, B3+, Si4+, and P5+) Keggin heteropolyacid catalysts were investigated. Successful formation of HnXW12O40 catalysts was confirmed by diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy. Reduction potentials of HnXW12O40 catalysts were determined by electrochemical measurements. First electron reduction potential of HnXW12O40 catalysts decreased with increasing overall negative charge of heteropolyanion. H(n)XW(12)O(40)catalysts were then applied to the liquidphase oxidation of benzaldehyde to benzoic acid. Yield for benzoic acid increased with increasing first electron reduction potential. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：155 / 158

页数：4

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