Preparation and catalytic application of Rh³⁺/Ru³⁺ bimetallic catalyst stabilized by triolefinic macrocycle-terminated poly(propylene imine) dendrimer

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• 作者：Wei Zhou ; Xiaohong Peng
• 关键词：poly(propylene imine) dendrimer ; catalytic hydrogenation ; bimetallic ions ; nitrile ; butadiene rubber
• 刊名：Macromolecular Research
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：24
• 期：11
• 页码：1024-1029
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Polymer Sciences; Soft and Granular Matter, Complex Fluids and Microfluidics; Physical Chemistry; Characterization and Evaluation of Materials; Nanochemistry; Nanotechnology;
• 出版者：The Polymer Society of Korea
• ISSN：2092-7673
• 卷排序：24

文摘

The novel homogeneous bimetallic Rh3+/Ru3+ catalyst (G2-M(Rh3+_xRu3+_10-x)) was prepared within a second-generation poly(propylene imine) dendrimer terminated by nitrogen-containing triolefinic macrocycle (G2-M) by a co-complexation route. The G2-M(Rh3+_x Ru3+_10-x) catalyst was analyzed by 1H NMR (nuclear magnetic resonance), XPS (X-ray photoelectron spectroscopy), and XRD (X-ray diffraction). As a novel catalyst system, The bimetallic ions of Rh3+ and Ru3+ influenced on the catalytic activity for the hydrogenation of nitrile-butadiene rubber (NBR), which can be related to electron-deficiency effect resulting from the electron density shift from the Rh3+ to the Ru3+. The G2-M (Rh3+₁₀) and G2-M(Rh3+₇Ru3+₃) displayed more excellent activity and favorable separation capability for the hydrogenation of NBR than the Rh nanoparticle catalyst stabilized by G2-M (G2-M(Rh₁₀)).