Magnetic properties and activity of Pt-Er/γ-Al2O3 catalysts

被引：4

作者：

Li, FY ^{[1
]}

Li, JY

Lu, WQ

Zhang, XQ

机构：

[1] Nanchang Univ, Inst Appl Chem, Nanchang 330047, Peoples R China

[2] Jiangxi Analyzing Testing Ctr, Nanchang 330029, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2006年 / 24卷 / 01期

关键词：

Pt-Er-Al2O3; catalysts; catalytic activity; magnetic properties; surface properties; rare earths;

D O I：

10.1016/S1002-0721(06)60064-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of Pt-Er/gamma-Al2O3 catalysts containing 0.5% (mass fraction) platinum and 0.05%-1.5% Er were prepared by impregnation of gamma-Al2O3 supported with different concentrations of erbium chloride solution. The surface properties of the catalysts were studied by methods of temperature programmed reduction and temperature programmed desorption. The magnetic behavior of Pt-Er-gamma-Al2O3 catalysts were studied with a Faraday magnetic balance and the results show that the addition of Er can affect the surface properties, the catalytic activities, and magnetic behavior of the reforming catalysts. It is found that there is a corresponding relationship between the susceptibility and selectivity of Pt-Er-gamma-Al2O3 catalysts. The experimental results show that Er plays the role of electron promoter.

引用

页码：50 / 53

页数：4

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