Au/mesoporous-TiO2 as catalyst for the oxidation of alcohols to carboxylic acids with molecular oxygen in water

被引：26

作者：

Zhou, Lipeng ^{[1
]}

Chen, Minzhu ^{[1
]}

Wang, Yougiang ^{[1
]}

Su, Yunlai ^{[1
]}

Yang, Xiaomei ^{[1
]}

Chen, Chen ^{[2
]}

Xu, Jie ^{[2
]}

机构：

[1] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2014年 / 475卷

基金：

中国国家自然科学基金;

关键词：

Au; Mesoporous TiO2; Oxidation; Alcohol; Carboxylic acid; SELECTIVE OXIDATION; AEROBIC OXIDATION; CO OXIDATION; NANOPARTICLES; PERFORMANCE; TIO2; HYDROLYSIS; ZEOLITE; SOLVENT; SUPPORT;

D O I：

10.1016/j.apcata.2014.01.042

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：

Mesoporous TiO2 (meso-TiO2) with sharp pore size distribution was synthesized by hydrothermal method. The obtained meso-TiO2 is in pure anatase phase and presents spheric aggregates with diameter of 1.0-1.5 mu m, which consists of nanoparticles with size of 6-10 nm. Au supported on meso-TiO2 (Au/meso-TiO2) was prepared by urea deposition-precipitation method using HAuCl4 as gold source. The catalyst was characterized by X-ray diffraction, N-2 adsorption, transmission electron microscopy and UV-vis diffuse reflectance spectroscopy. The catalytic performance of Au/meso-TiO2 was studied in the oxidation of 1-pentanol to n-valeric acid with molecular oxygen as oxidant in water under basic conditions. It was found that meso-TiO2 is a better support for gold catalyst in the oxidation of 1-pentanol than NaY zeolite, hydrotalcite, and nano-TiO2. Deposition-precipitation time, calcination temperature and Au loading affected the catalytic performance of Au/meso-TiO2. The catalyst can also effectively catalyze the oxidation of aliphatic (C-3-C-10) and aromatic alcohols to the corresponding carboxylic acids. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：347 / 354

页数：8

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