氮掺杂的有序介孔碳负载钴纳米颗粒用于脂肪酰胺的催化加氢

Nitrogen-Doped Ordered Mesoporous Carbon Supported Co Nanoparticles Catalyzed Hydrogenation of Aliphatic Amides

酰胺的选择性加氢可以作为有机胺的一种生产路径.传统的酰胺加氢多相催化体系多采用贵金属催化剂和高压氢气,存在成本较高的问题.我们采用离子交换热解法制备了氮掺杂有序介孔碳负载钴纳米颗粒催化剂(Co/MNC),该催化剂在脂肪族酰胺加氢反应中表现出良好的活性和选择性.结果表明,负载型Co催化剂在500℃下热解后,Co纳米颗粒分散均匀,催化剂表面同时存在金属Co^(0)和具有路易斯酸性的CoO_(x),催化性能明显优于Co/MNC-600和Co/MNC-700.

Selective hydrogenation of amides is an attractive route for the production of amines.Traditional processes commonly used noble metal catalysts and high-pressure H_(2),which are not cost-saving and selectivity-controllable.Nitrogen-doped ordered mesoporous carbon supported Co nanoparticles catalysts(Co/MNC)were prepared via an ion exchange-pyrolysis strategy,which showed good activity and selectivity in hydrogenation of aliphatic amides.It was found that the supported Co catalysts pyrolyzed at 500℃possessed the uniform dispersion of Co nanoparticles and the co-existence of Co^(0)and Lewis acidic CoO_(x)species,thus resulting in a boosted catalytic performance,which was more active than other counterparts as well as Co/MNC-600 and Co/MNC-700.