Influence of catalyst pretreatments on volatile organic compounds oxidation over gold/iron oxide
Influence of catalyst pretreatments on volatile organic compounds oxidation over gold/iron oxide
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DOI：
10.1016/s0926-3373(01)00221-1
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发表时间：
2001-11-28
影响因子：
22.1
通讯作者：
Galvagno, S
中科院分区：
文献类型：
--
作者：
Minicò, S;Scirè, S;Galvagno, S
本文报道了煅烧预处理对金/氧化铁体系对一些代表性挥发性有机化合物（2-丙醇、乙醇、甲醇、丙酮和甲苯）燃烧的催化行为的影响的研究。人们发现 Au/Fe2O3 样品对完全氧化成 CO2 的催化活性强烈依赖于催化剂预处理，随着煅烧温度的升高而降低。根据表征数据（XPS、FT-IR、XRD、BET 表面积），有人提出催化行为与金态和/或氧化铁相有关。金的氧化态和/或粒径在挥发性有机化合物的催化燃烧中起着关键作用，这似乎是合理的。 (C) 2001 Elsevier Science B.V. 保留所有权利。
This paper reports a study on the influence of calcination pretreatments on the catalytic behaviour of the Au/iron oxide system towards the combustion of some representative volatile organic compounds (2-propanol, ethanol, methanol, acetone and toluene). The catalytic activity of Au/Fe2O3 samples towards the total oxidation to CO2 has been found to be strongly dependent on the catalyst pretreatment, decreasing on increasing the calcination temperature. On the basis of characterisation data (XPS, FT-IR, XRD, BET surface area) it has been proposed that the catalytic behaviour is related to the gold state and/or the iron oxide phase. It appears plausible to suggest that the gold oxidation state and/or the particle size play a key role in the catalytic combustion of volatile organic compounds. (C) 2001 Elsevier Science B.V. All rights reserved.