In situ ESR study of gold supported on NaY zeolite
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Qu, Z.
- 通讯作者：
- Roduner, E (reprint author), Univ Stuttgart, Inst Phys Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
- 合写作者：
- Roduner, E.
- 发表时间：
- 2009-09-01
- 发表刊物：
- ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
- 收录刊物：
- SCIE、EI、Scopus
- 文献类型：
- J
- 卷号：
- 4
- 期号：
- 5,SI
- 页面范围：
- 602-606
- ISSN号：
- 1932-2143
- 关键字：
- ESR; gold nanoparticle; Au(II) complex; 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 [g(iso) = 2.053, A (Au) = 16.4 G, A (N) = 15.0 G.] in the supercage of the zeolite and conduction electron spin resonance (CESR) of gold particles with 1.56-nm diameter (g = 2.064) were observed. Their formation and stability were related with the gold concentration and the pre-treatment conditions. The small gold particles stabilized in the supercage of zeolite were formed in the samples with low gold concentration after oxygen pre-treatment. The confinement in the zeolite pores obviously prevents the Au(II) complex bound to two nitrogen ligands from undergoing disproportionation. (C) 2009 Curtin University of Technology and John Wiley & Sons, Ltd.
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- 否
