The Properties of the Fe3+ Supported Catalyzes Studied by Positron Annihilation Spectroscopes

摘要：

The Fe(Ⅲ)/γ-Al2O3 catalysts with 1.8～9.6 wt％ Fe(Ⅲ) was prepared by an impregnation technique using Ferric nitrate solution1. Positron annihilation lifetime spectroscopy has been used to study the interaction between Fe3+ and γ-Al2O3 support2 after the samples were heated 1 hour at different temperature respectively. From the results with four lifetime components, we can see that interaction was weak before heating. When heating temperature increased, the interaction showed the different characters, and some Fe3+ was dispersed into micropores.

关键词： dispersion alumina positron annihilation spectroscopes

作者: Q.L.Zhang Jun ZHU

作者单位: Department of Physics,Wuhan University,Wuhan 430072,P.R.of CHINA

会议类型: 国际会议

会议名称: 第九届国际正电子与正电子素国际会议(9th International Workshop on Positron and Positronium Chemistry)(PPC–9)

会议地点: 武汉

会议语种:英文

页码: 117

在线出版日期: 2008-05-11（万方平台首次上网日期，不代表论文的发表时间）