In situ ESR Study on Gold Supported on NaY Zeolite

摘要：

Electron spin resonance (ESR) spectroscopy was used to study the anchoring of a Au complex and gold nanoparticles in NaY type zeolites. The complex of Au(II) with two nitrogen atoms of two ethylenediamine ligands (giso=2.0533, A (Au) = 16.4 G, A (N) = 15 G.) in the supercage of the zeolite and conduction electron spin resonance of gold with 1.56 nm (g=2.0635 )were observed. Their formation and stability were related with the gold concentration and the pre-treatment conditions. The small gold particles stablited in the supercate of zeolite could be formed on the samples with low gold concentration after oxygen pre-treatment. The confinement in the zeolite pores obviously prevents the Au(II) complexe binded with two N from undergoing disproportionation.

关键词： ESR gold nanoparticle Au (II) complexe NaY zeolite

作者: Z. Qu E. Roduner

作者单位: Key Laboratory of Industrial Ecology and Environmental Engineering, MOE,School ofEnvironmental and B Insitut für Physikalische Chemie, Universit?t Stuttgart, Pfaffenwaldring 55, D-70569, Stuttgart,Germ

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）