Green Synthesis of Rhodium Nanoparticles that are Catalytically Active in Benzene Hydrogenation and 1‐Hexene Hydroformylation,ChemCatChem

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Green Synthesis of Rhodium Nanoparticles that are Catalytically Active in Benzene Hydrogenation and 1‐Hexene Hydroformylation
ChemCatChem ( IF 3.8 ) Pub Date : 2018-03-07 , DOI: 10.1002/cctc.201701644
Waleed Alsalahi ₁ , Wlodzimierz Tylus ₂ , Anna M. Trzeciak ₁

Affiliation

Rhodium nanoparticles (Rh NPs) were prepared according to a green method based on the reduction of (acetylacetonato)dicarbonylrhodium(I), Rh(acac)(CO)₂, in water at 80 °C. The nanoparticles, which were obtained without the addition of a reducing agent, were stabilized by polyvinylpyrrolidone (PVP) or polyvinyl alcohol (PVA) polymers and characterized by TEM (transmission electron microscopy), XPS (X‐ray photoelectron spectroscopy), and XRD (X‐ray powder diffraction) methods. The excellent catalytic activity of these Rh NPs was evidenced in the hydrogenation of benzene to cyclohexane. In the presence of PPh₃, Rh NPs formed a highly active system in the hydroformylation of 1‐hexene. In this system, they acted as a source of soluble rhodium species. Rh NPs were also synthesized in water using rhodium(II) acetate, Rh₂(OAc)₄, and rhodium(III) chloride, RhCl₃, as rhodium sources, and their catalytic activity was compared with that of the rhodium precursors.

中文翻译：

在苯加氢和1-己烯加氢甲酰化中具有催化活性的铑纳米粒子的绿色合成

根据绿色方法，基于在80°C的水中还原（乙酰基丙酮基）二羰基铑（I），Rh（acac）（CO）_2的方法，制备了铑纳米颗粒（Rh NPs）。在不添加还原剂的情况下获得的纳米颗粒通过聚乙烯吡咯烷酮（PVP）或聚乙烯醇（PVA）聚合物稳定化，并通过TEM（透射电子显微镜），XPS（X射线光电子能谱）和XRD（ X射线粉末衍射法）。这些Rh NPs的优异催化活性在苯加氢成环己烷中得到了证明。在PPh ₃存在下，Rh NPs在1-己烯的加氢甲酰化反应中形成了一个高活性的体系。在此系统中，它们充当可溶性铑物质的来源。还使用乙酸铑（II）Rh ₂（OAc）₄和氯化铑（III）氯化铑RhCl ₃作为铑源在水中合成了Rh NP ，并将它们的催化活性与铑前体的催化活性进行了比较。

更新日期：2018-03-07

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