Monodisperse nickel-nanoparticles for stereo- and chemoselective hydrogenation of alkynes to alkenes
作者:Kathiravan Murugesan、Ahmad S. Alshammari、Manzar Sohail、Matthias Beller、Rajenahally V. Jagadeesh
DOI:10.1016/j.jcat.2018.12.018
日期:2019.2
Here, we report the use of monosaccharides for the preparation of novel nickel nanoparticles (NP), which constitute selective hydrogenation catalysts. For example, immobilization of fructose and Ni(OAc)2 on silica and subsequent pyrolysis under inert atmosphere produced graphitic shells encapsulated Ni-NP with uniform size and distribution. Interestingly, fructose acts as structure controlling compound
在这里,我们报告了使用单糖制备新型镍纳米颗粒(NP)的方法,这些镍纳米颗粒构成了选择性加氢催化剂。例如,将果糖和Ni(OAc)2固定在二氧化硅上,然后在惰性气氛下进行热解,制成了石墨壳,其包裹的Ni-NP具有均匀的尺寸和分布。有趣的是,果糖充当结构控制化合物以生成特定的石墨层和单分散NP的形成。所得的稳定且可重复使用的催化剂允许以高收率和选择性将官能化和结构多样的炔烃进行立体和化学选择性半氢化反应。