作者:Tharique N. Ansari、Armand Taussat、Adam H. Clark、Maarten Nachtegaal、Scott Plummer、Fabrice Gallou、Sachin Handa
DOI:10.1021/acscatal.9b02622
日期:2019.11.1
their linkage with the activated carbon surface is revealed by XAS analysis. Control NMR experiments revealed the binding of the ligand with both Cu and Pd, and all phosphine molecules are under the same environment. In addition to NMR and XAS analysis, the catalyst is characterized by SEM, HRTEM, XPS, and TGA. Reactions are highly reproducible at variable scales. Environmentally benign, proline-based
胶束布赫瓦尔德-哈特维格胺胺化的纳米催化剂已经开发,充分表征并应用于多种底物上。该催化剂在环境条件下稳定至少六个月。催化剂在几个循环后仍保持其活性,并且如NMR光谱所证实的,其结构保持完整。31揭示了磷化氢配体使Pd纳米颗粒与Cu缔合通过XAS分析揭示了P NMR光谱及其与活性炭表面的联系。对照NMR实验表明,配体与Cu和Pd均结合,所有膦分子均处于同一环境中。除了NMR和XAS分析之外,该催化剂还通过SEM,HRTEM,XPS和TGA进行表征。反应在可变规模下可高度重现。环境友好的脯氨酸基两亲物PS-750-M对于催化活性至关重要,该催化活性是在温和条件下以水为反应介质的条件下实现的。这些条件的固有可持续性,再加上通过催化剂和反应介质的强健循环可实现的低E因子,证明了该技术的巨大实用性。