Heteropoly Tungstate Supported on Metal Oxide Catalysts for Liquid Phase Oxidation of Benzyl Alcohol with Hydrogen Peroxide

被引：7

作者：

Han Xiaoxiang ^{[1
]}

Kuang Yingying ^{[1
]}

Xiong Chunhua ^{[1
]}

Tang Xiujuan ^{[2
]}

Chen Qing ^{[1
]}

Wang Kuiwu ^{[1
]}

Hung Chin-Te ^{[3
]}

Liu Li-Li ^{[3
]}

Liu Shang-Bin ^{[3
]}

机构：

[1] Zhejiang Gongshang Univ, Dept Appl Chem, Hangzhou 310018, Zhejiang, Peoples R China

[2] Zhejiang Gongshang Univ, Coll Environm Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China

[3] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2018年 / 29卷 / 01期

关键词：

ceria; heteropolyacid; oxidation; reaction engineering; process optimization; SOLID ACID CATALYSTS; FREE SELECTIVE OXIDATION; CEO2-ZRO2 MIXED OXIDES; SOLVENT-FREE OXIDATION; AEROBIC OXIDATION; RECYCLABLE CATALYST; CHEMICAL-SHIFT; P-31; NMR; MAS NMR; KEGGIN;

D O I：

10.21577/0103-5053.20170117

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of metal oxide supported tungstophosphoric acid catalysts were prepared by impregnation. The physicochemical and acidic properties of these materials were characterized by a variety of different analytical and spectroscopic techniques, namely Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) method, and nuclear magnetic resonance (NMR), and exploited as heterogeneous catalysts for selective oxidation of benzyl alcohol (BzOH) with hydrogen peroxide (H2O2). Among them, 20 wt.% H3PW12O40/CeO2 catalyst exhibited the best oxidative activity. Further process optimization by response surface methodology (RSM) based on the Box-Behnken design model resulted in a benzyl alcohol conversion of 95.2% and a benzaldehyde yield of 94.2% with 98.9% selectivity, in good agreement with the experimental results. Kinetic studies based on an irreversible parallel reaction model led to an activation energy (E-a) of 44.73 kJ mol(-1).

引用

页码：88 / 98

页数：11

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