Application of nitrogen-doped carbon nanotube-supported palladium-based catalysts in hydrogenation of m-dinitrobenzene
In this paper,Pd/NCNTs catalysts of Pd supported on nitrogen-doped carbon nanotubes(NCNTs)were prepared and used in the catalytic hydrogenation of m-dinitrobenzene to m-phenylenediamine.The effects of different preparation methods of NCNTs on the catalytic performance of Pd/NCNTs catalysts were studied.The experimental results show that Pd nanoparticles can be more evenly dispersed on the carrier of NCNTs and can interact strongly with the carrier.The hydrogenation activity of Pd/NCNTs catalyst is higher when the nitrogen content in NCNTs is higher and the proportion of pyridine nitrogen is higher.In the catalytic hydrogenation of m-dinitrobenzene,the hydrogenation activity of Pd/NCNTs catalyst is 69％higher than that of Pd/CNTs catalyst.
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