Magnetic Properties and Activity of Pt-Er/γ-Al2O3 Catalysts
来源期刊：JOURNAL OF RARE EARTHS2006年第1期
论文作者：Lu Weiqi Zhang Xinquan Li Jianyong Li,Fengyi
Key words：Pt-Er-Al2O3 catalysts; catalytic activity; magnetic properties; surface properties; rare earths;
Abstract: A series of Pt-Er/γ-Al2O3 catalysts containing 0.5%(mass fraction) platinum and 0.05%-1.5% Er were prepared by impregnation of γ-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-γ-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-γ-Al2O3 catalysts. The experimental results show that Er plays the role of electron promoter.
Lu Weiqi1，Zhang Xinquan2，Li Jianyong1，Li,Fengyi1
(1.Institute of Applied Chemistry, Nanchang University, Nanchang 330047, China;
2.Jiangxi Analyzing Testinng Center, Nanchang 330029, China)
Abstract:A series of Pt-Er/γ-Al2O3 catalysts containing 0.5%(mass fraction) platinum and 0.05%-1.5% Er were prepared by impregnation of γ-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-γ-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-γ-Al2O3 catalysts. The experimental results show that Er plays the role of electron promoter.
Key words:Pt-Er-Al2O3 catalysts; catalytic activity; magnetic properties; surface properties; rare earths;
【全文内容正在添加中】
