In-Situ FTIR Study on Effect of Lathanum on Oxidation Mechanism of Methanol Automobile Exhaust on Supported Palladium Catalyst
来源期刊：JOURNAL OF RARE EARTHS2002年第4期
论文作者：王幸宜 万颖 卢冠忠 李庭琛
Key words：rare earths; supported palladium catalyst; methanol oxidation; lanthanum;
Abstract: The performance of severe oxidation of methanol on 0.1%Pd supported on alumina was studied by a combined device of chromatograph-micro reactor. The results show that the addition of La into γ-Al2O3 as support can affect the performance of Pd catalyst greatly. By using Pd catalyst containing La in methanol oxidation, though, the ignition temperature is not lower than that by using Pd catalyst, the presence of La does suppress the formation of oxygenic intermediates. The results by in-situ FTIR show that the presence of La in the support affects the adsorbed species and hence the mechanism of severe oxidation of methanol on Pd catalyst.
王幸宜1，万颖1，卢冠忠1，李庭琛1
(1.Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China)
Abstract:The performance of severe oxidation of methanol on 0.1%Pd supported on alumina was studied by a combined device of chromatograph-micro reactor. The results show that the addition of La into γ-Al2O3 as support can affect the performance of Pd catalyst greatly. By using Pd catalyst containing La in methanol oxidation, though, the ignition temperature is not lower than that by using Pd catalyst, the presence of La does suppress the formation of oxygenic intermediates. The results by in-situ FTIR show that the presence of La in the support affects the adsorbed species and hence the mechanism of severe oxidation of methanol on Pd catalyst.
Key words:rare earths; supported palladium catalyst; methanol oxidation; lanthanum;
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