氮掺杂石墨二炔材料负载钯催化的非均相硝基芳烃还原

基于非均相催化剂的发展现状以及绿色化学的需求,以多孔氮掺杂石墨二炔（PQ-GDY,“自下而上”法合成）碳材料为载体,经钯负载成功制备了具有高硝基还原催化活性的非均相催化剂（Pd@PQ-GDY）.通过场发射扫描电子显微镜（FE-SEM）、X射线光电子能谱（XPS）、密度泛函理论（DFT）对该复合材料进行了综合表征及理论计算.结果表明：Pd@PQ-GDY实现了PQ-GDY对Pd(0)的高效负载,催化活性显著提高,是原位生成且未负载PQ-GDY的Pd(0)催化活性的23倍;其催化的10种硝基芳烃的还原转化率均高于96.5%,且展现了出良好的官能团兼容性.

Heterogeneous reduction of nitroaromatic hydrocarbons catalyzed by N-doped graphdiyne materials supported Palladium

Based on the status quo of heterogeneous catalysts and the demand for green chemistry, porous nitrogen doped graphdiyne（PQ-GDY, synthesized by a “bottom-up” method） carbon material was used as the carrier to successfully prepare heterogeneous catalysts（Pd@PQ-GDY） with high nitro reduction catalytic activity through palladium（Pd） loading. The composite material was comprehensively characterized and theoretically calculated through field emission scanning electron microscopy（FE-SEM）, X-ray photoelectron spectroscopy（XPS）, and density functional theory（DFT）. The results showed that the catalyst achieved efficient loading of Pd（0） on PQ-GDY and its catalytic activity was significantly improved, which is 23 times higher than that of Pd（0） generated in situ without loading PQ-GDY. The reduction conversion rates of 10 nitroaromatic hydrocarbons catalyzed by Pd@PQ-GDY are all higher than 96.5%. Pd@PQ-GDY exhibits good functional group compatibility.