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

作　　者：王松[1] 景志红[1] 徐国强[2] 牟新东[2] 

机构地区：[1]曲阜师范大学化学与化工学院,山东曲阜273165 [2]中科院生物基材料重点实验室中科院青岛生物能源与过程研究所,山东青岛266101

出　　处：《精细化工》2015年第12期1376-1381,共6页Fine Chemicals

基　　金：国家自然科学基金(21273260)~~

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Ir质量分数为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、碱对N-烷基化反应的影响。结果表明,n（Ir）∶n（1,10-Phenanthroline）=1∶2的铱基催化剂,可以在水相中高效催化包括氨水在内的多种胺类与伯醇的N-烷基化反应。运用XRD、TEM、XPS、BET测定手段对催化剂进行了表征。在循环实验中,催化剂体现了较好的稳定性和催化活性,其中,苄醇的转化率为79.1%～92.3%,三苄胺的选择性为74.3%～85.6%。A stable ,easily recoverable heterogeneous catalyst Ir-N@ C （the mass fraction of iridium is 5% ） was obtained by impregnation with commercial carbon powder. The factors of the N-alkylation reaction including different iridium catalysts, reaction temperature, reaction time and bases were 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. The catalyst was characterized by XRD, TEM, XPS, BET. In recycling experiments, the catalyst showed acceptable stability and the catalytic activity. The conversion of benzyl alcohol was 79. 1% -92.3%, and the selectivity to tribenzvlamine was 74. 3% ～ 85. 6%

关 键 词：多相催化剂Ir-N@C 胺 伯醇 N-烷基化反应 水 催化技术 

分 类 号：O643[理学—物理化学]