Max-Planck-Institut für Kohlenforschung, 45470, Mülheim an der Ruhr, Germany.
Angew Chem Int Ed Engl. 2016 Sep 5;55(37):11101-5. doi: 10.1002/anie.201604673. Epub 2016 Jul 28.
A simple and scalable method for synthesizing Co3 O4 nanoparticles supported on the framework of mesoporous carbon (MC) was developed. Benefiting from an ion-exchange process during the preparation, the cobalt precursor is introduced into a mesostructured polymer framework that results in Co3 O4 nanoparticles (ca. 3 nm) supported on MC (Co3 O4 /MC) with narrow particle size distribution and homogeneous dispersion after simple reduction/pyrolysis and mild oxidation steps. The as-obtained Co3 O4 /MC is a highly efficient catalyst for transfer hydrogenation of α,β-unsaturated aldehydes. Selectivities towards unsaturated alcohols are always higher than 95 % at full conversion. In addition, the Co3 O4 /MC shows high stability under the reaction conditions, it can be recycled at least six times without loss of activity.
一种简单且可扩展的方法被开发用于合成负载在介孔碳（MC）框架上的 Co3 O4 纳米粒子。得益于制备过程中的离子交换过程，钴前体被引入到介孔聚合物骨架中，导致 Co3 O4 纳米粒子（约 3nm）负载在 MC 上（Co3 O4 /MC），具有窄的粒径分布和均匀的分散性，经过简单的还原/热解和温和的氧化步骤。所得到的 Co3 O4 /MC 是α,β-不饱和醛转移氢化的高效催化剂。在完全转化的情况下，对不饱和醇的选择性始终高于 95%。此外，Co3 O4 /MC 在反应条件下表现出高稳定性，在不损失活性的情况下至少可循环使用六次。
