Influence of the structure of TiO2, CeO2, and CeO2-TiO2 supports on the activity of Ru catalysts in the catalytic wet air oxidation of acetic acid

被引：14

作者：

Yang Shaoxia ^{[1
,2
]}

Zhu Wanpeng ^{[2
]}

Wang Xingang ^{[1
]}

机构：

[1] N China Elect Power Univ, Sch Renewable Energy, Natl Engn Lab Biomass Power Generat Equipment, Beijing 102206, Peoples R China

[2] Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China

来源：

RARE METALS | 2011年 / 30卷 / 05期

基金：

中国国家自然科学基金;

关键词：

catalytic oxidation; catalysts; ruthenium; ceria; acetic acid; NOBLE-METAL CATALYSTS; RUTHENIUM CATALYSTS; WASTE-WATER; RUO2/GAMMA-AL2O3; CATALYST; AQUEOUS-SOLUTIONS; CARBOXYLIC-ACIDS; PHENOL; PARTICLES; STABILITY; ZIRCONIA;

D O I：

10.1007/s12598-011-0417-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ru catalysts, supported on TiO2, CeO2, and CeO2-TiO2, were prepared by the impregnation method. The effect of the structure of the supports on the activity of Ru catalysts was investigated in the catalytic wet air oxidation (CWAO) of acetic acid under 230 degrees C and 5 MPa in a batch reactor. Physical properties including the surface area, crystalline phase, and surface components of the Ru catalysts were characterized by N-2 adsorption, X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The CeO2-based Ru catalysts had good activity, and the prepared RuO2/CeO2 catalyst showed markedly higher activity than the RuO2/CeO2-TiO2 catalyst. The surface structure, the high amount of chemisorbed oxygen on the catalyst surface, and the suitable pH(pzc) value of the supports played an important role in the activity of the Ru catalysts in CWAO of acetic acid.

引用

页码：488 / 495

页数：8

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