Abstract

Palladium nanoparticles on ethylenediamine-grafted functionalized chromium-based metal organic framework (Pd-ED-MIL-101) was tested for the hydrogenation of styrene oxide to 2-phenylethanol, the key ingredient of the rose essence. The catalyst was found as an excellent heterogeneous recyclable catalyst for selective hydrogenation of styrene oxide to 2-phenylethanol (100% conversion and ∼100% selectivity) within 2 h in methanol with a catalyst loading only 0.25 mol % palladium at ambient pressure and temperature under molecular hydrogen. If the catalyst loading increases to 0.50 mol % palladium, the conversion time reduces to 1 h. In repeated runs (tested for 5 cycles) showed no loss of activity and selectivity of the catalyst. To the best of our knowledge, the performance of the present catalyst is one of the best compared to all other reported catalysts in terms of conversion, selectivity, reaction time, reaction conditions, purification, catalyst stability, catalyst loading, catalyst recyclability, safety and convenience.

摘要

测试了乙二胺接枝的官能化铬基金属有机骨架 (Pd-ED-MIL-101) 上的钯纳米粒子将氧化苯乙烯氢化成玫瑰香精的关键成分 2-苯基乙醇。发现该催化剂是一种优异的多相可回收催化剂，用于在甲醇中在 2 小时内将氧化苯乙烯选择性加氢为 2-苯基乙醇（100% 转化率和~100% 选择性），催化剂在常压和温度下仅负载 0.25 mol% 钯。分子氢。如果催化剂负载量增加到 0.50 mol% 钯，转化时间将减少到 1 小时。在重复运行（测试 5 个循环）中显示催化剂的活性和选择性没有损失。据我们所知，