| Pt-Sn脱氢催化剂浸渍状态的Sn-119和Pt-195的多核NMR研究 | |
| A STUDY ON THE IMPREGNATION STATE OF THE Pt-Sn CATALYST BY MULTINUCLEAR NMR | |
| 摘要: 测定了Pt-Sn型催化剂浸渍状态下的Sn-119、Pt-195的多核核磁共振。当SnCl2/DCl溶液体系中加入H2PtCl6以后,出现了Sn(Ⅳ)和另外一种Sn(Ⅱ)的构型,Sn-119峰向高场位移,说明部分Sn(Ⅱ)被氧化成Sn(Ⅳ),H2PtCl6的量对这种氧化性影响较小。而H2PtCl6/D2O溶液体系中加入SnCl2以后部分Pt(Ⅳ)被还原成Pt(Ⅱ),随着SnCl2量的增加,Pt(Ⅱ)-195峰的强度逐渐增加而Pt(Ⅳ)-195峰逐渐减小。Pt(Ⅳ)-195较Pt(Ⅱ)-195峰向高场位移。在溶液状态下未发现Pt-Sn间的偶合分裂。 | |
| 关键词: 催化剂 多核NMR 配位 Pt-Sn体系 | |
| 基金项目: 江苏省自然科学基金资助项目 | |
| Abstract: The impregnation solution for the catalyst of dehydrogenation has been investigated by Sn-119 and Pt-95 multinudear magnetic resonance spectroscopy.The results show that some Sn(Ⅱ) have been oxidized to Sn(Ⅳ) after putting H2PtCl6 into SnCl2. In addition,the tetrahedroid of Sn(Ⅱ)complex has already disappeared. Morever, the platinum hex-achlorolatinate (Ⅳ) and platinum tetrachlorolatinate(Ⅱ) were discussed in terms of Pt-195 spectra, and the intensity of peaks depends on amount of SnCl2. In solution, the spin-spin coupling between Sn-119 and Pt-195 does not appear, this means that the Sn(Ⅱ)become a more stable species, forming a new Sn-Pt polynudear complex. | |
| Keywords: catalyst multinuclear NMR coordination Pt-Sn system | |
| 投稿时间：1995-11-29 | |
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| 杨绪杰,陆路德,刘劲松,王瑛,靳松,汪信,吴沛成,马永福,张寿龄.Pt-Sn脱氢催化剂浸渍状态的Sn-119和Pt-195的多核NMR研究[J].无机化学学报,1996,12(3):303-306. | |
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