Enhancement of the catalytic activity of Pd nanoparticles in Suzuki coupling by partial functionalization of the reduced graphene oxide support with p-phenylenediamine and benzidine
Enhancement of the catalytic activity of Pd nanoparticles in Suzuki coupling by partial functionalization of the reduced graphene oxide support with p-phenylenediamine and benzidine
复制标题
DOI：
10.1016/j.jcat.2020.03.011
复制
发表时间：
2020-05-01
影响因子：
7.3
通讯作者：
El-Shall, M. Samy
中科院分区：
文献类型：
--
作者：
Ibrahim, Amr Awad;Lin, Andrew;El-Shall, M. Samy
本文报道了用于室温Suzuki交叉偶联反应的高活性Pd纳米粒子的新型载体的开发。还原的氧化石墨烯载体通过含N的对苯二胺和联苯胺分子的部分官能化导致小Pd纳米颗粒分散在固体催化剂Pd/（RGO-PPD）和Pd/（RGO-BZD）中，其在无配体的环境条件下表现出优异的Suzuki偶联催化活性，具有与最佳均相Pd催化剂相匹配的不寻常的催化活性。它们提供了在微波辅助的Suzuki交叉偶联反应中观察到的显著的周转频率（400，000 h（-1）），易于从反应混合物中除去，可再循环而不损失活性，并且比大多数报道的多相Pd催化剂显著更好的性能。这些发现说明了化学部分官能化的还原氧化石墨烯载体为碳-碳键形成反应的各种金属和非金属催化剂提供的令人兴奋的机会。(C)2020爱思唯尔公司All rights reserved.
This paper reports the development of novel supports for highly active Pd nanoparticles for room temperature Suzuki cross coupling reactions. The partial functionalization of the reduced graphene oxide support by the N-containing p-phenylenediamine and benzidine molecules results in the dispersion of small Pd nanoparticles in the solid catalysts Pd/(RGO-PPD) and Pd/(RGO-BZD) which demonstrate excellent catalytic activity for Suzuki coupling under ligand-free ambient conditions with unusual catalytic activity that matches that of the best homogeneous Pd catalysts. They offer remarkable turnover frequencies (400,000 h(-1)) observed in the microwave-assisted Suzuki cross coupling reaction with easy removal from the reaction mixture, recyclability with no loss of activity, and significantly better performance than most of the reported heterogeneous Pd catalysts. The findings illustrate the exciting opportunities presented by the chemically partially functionalized reduced graphene oxide support for a variety of metallic and bimetallic catalysts for carbon-carbon bond forming reactions. (C) 2020 Elsevier Inc. All rights reserved.