Catalytic combustion of volatile organic compounds on Au/CeO2/Al2O3 and Au/Al2O3 catalysts

被引：243
作者：
Centeno, MA
Paulis, M
Montes, M
Odriozola, JA
机构：
[1] Univ Seville, CSIC, Ctr Mixto, Inst Ciencia Mat Sevilla, Seville 41092, Spain
[2] UPV, EHU, Fac Ciencias Quim San Sebastian, Grupo Ingn Quim,Dept Quim Aplicado, San Sebastian 20009, Spain
来源：
APPLIED CATALYSIS A-GENERAL | 2002年 / 234卷 / 1-2期
关键词：
volatile organic compounds; gold catalysts; catalytic combustion; CeO2/Al2O3; catalysts; n-hexane; benzene; 2-propanol;
D O I：
10.1016/S0926-860X(02)00214-4
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：
Catalytic oxidation of n-hexane, benzene and 2-propanol was investigated on Au/CeO2/Al2O3 and Au/Al2O3 catalysts prepared from the deposition-precipitation method and characterised by XRD, scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-VIS and X-ray photoelectron spectroscopy (XPS) techniques. It is shown that ceria enhances the fixation and final dispersion of gold particles, leading to stabilise them in lower crystallite sizes. Catalytic results show that ceria improves the activity of gold particles in the oxidation of the tested volatile organic compounds (VOCs), probably by increasing the mobility of the lattice oxygen and controlling and maintaining the adequate oxidation state of the active gold particles. (C) 2002 Elsevier Science B.V All rights reserved.
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收藏
页码：65 / 78
页数：14
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