水相中Ir-N@C催化的胺和伯醇的N-烷基化反应

Ir-N@C Catalyzed N-alkylation of Amines with Primary Alcohols in Water

摘要:

以商品化的活性炭为载体，采用浸渍法制备了稳定易回收且负载量为5 % 的多相催化剂Ir-N@C，考察了不同组分的铱基催化剂、反应温度、反应时间、碱等因素对N-烷基化反应的影响。实验结果表明，n (Ir):n (1,10-Phenanthroline) = 1 : 2的铱基催化剂，可以在水相中高效的催化氨水和多种胺类与伯醇的N-烷基化反应。在循环实验中，催化剂体现了良好的稳定性，且催化活性未明显下降。运用XRD、TEM、XPS、BET测定手段对催化剂进行了表征。

Abstract:

The stable, easy recoverable heterogeneous catalyst Ir-N@C ( 5 wt % Ir content) is obtained by impregnation with commercial carbon powder. The factors for the N-alkylation reaction including different iridium catalysts, reaction temperature, reaction time, bases are investigated. Experiment results suggested that the N-alkylation of amines with primary alcohols could be efficiently catalyzed in water using iridium catalyst with n (Ir) : n (1,10-Phenanthroline) = 1 : 2. In recycling experiment, the catalyst shows good stability and the catalytic activity is not obviously decreased. The catalyst is characterized by XRD, TEM, XPS, BET.