高效聚合物负载的单分散钌-镍纳米复合材料用于二甲基胺硼烷脱氢偶联。
Highly efficient polymer supported monodisperse ruthenium-nickel nanocomposites for dehydrocoupling of dimethylamine borane.
机构信息
Sen Research Group, Biochemistry Department, Faculty of Arts and Science, Dumlupinar University, Evliya Celebi Campus, 43100 Kutahya, Turkey.
Sen Research Group, Biochemistry Department, Faculty of Arts and Science, Dumlupinar University, Evliya Celebi Campus, 43100 Kutahya, Turkey; Department of Chemical Engineering, Faculty of Engineering, Usak University, Usak, Turkey.
出版信息
J Colloid Interface Sci. 2018 Sep 15;526:480-486. doi: 10.1016/j.jcis.2018.05.021. Epub 2018 May 17.
In the present study, highly effective and reusable monodisperse ruthenium-nickel (Ru-Ni) nanomaterials supported on poly(N-vinyl-2-pyrrolidone) (Ru-Ni@PVP) were synthesized (3.51 ± 0.38 nm) by a facile sodium-hydroxide-assisted reduction method; Ru and Ni reduction in PVP solution was accomplished. The prepared nanocomposites were characterized by TEM, HRTEM, XRD, and XPS and performed as a catalyst for dehydrocoupling of dimethylamine-borane (DMAB). It was found that Ru-Ni nanomaterials are one of the most active catalysts at low concentrations and temperature for dehydrocoupling of DMAB. This catalyst with its turnover frequency of 458.57 h exhibits one of the best results among all the catalysts prepared in the literature for dehydrocoupling of DMAB. Significantly low Ea value (36.52 ± 3 kJ mol) was also found for dehydrocoupling of DMAB.
在本研究中，通过简便的氢氧化钠辅助还原法合成了负载于聚乙烯基吡咯烷酮（Ru-Ni@PVP）上的高效且可重复使用的单分散钌-镍（Ru-Ni）纳米材料（3.51±0.38nm）；在 PVP 溶液中完成了 Ru 和 Ni 的还原。所制备的纳米复合材料通过 TEM、HRTEM、XRD 和 XPS 进行了表征，并用作二甲基胺硼烷（DMAB）脱氢偶联的催化剂。结果发现，Ru-Ni 纳米材料是 DMAB 脱氢偶联在低浓度和低温下最活跃的催化剂之一。该催化剂的周转频率为 458.57 h，在文献中制备的所有用于 DMAB 脱氢偶联的催化剂中表现出最佳结果之一。还发现 DMAB 脱氢偶联的低 Ea 值（36.52±3 kJ mol）。
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