Preparation And Research In Carbon Supported Ruthenium Ammonia Decomposition Catalyst

Hydrogen is recognized as the next generation of clean energy carrier,but it is difficult to compress with low quality energy density,hydrogen permeation and hydrogen embrittlementto it will cause security problems during storage that hinder application of hydrogen.Ammonia can be decomposed into nitrogen and hydrogen at lower temperatures,and the ammonia is more easily to the compress and liquefy that benefit for the costs of storage account for only one-tenth of hydrogen.Ammonia's produce and storage technology is very mature,ammonia as hydrogen storage medium is a promising method to solve the hydrogen storage and transport problem in the further.Support has a very critical impact on the supported Ru catalysts,the carbon supports in this paper were studied,prepared a various kinds of carbon materials for support Ru include: carbon spheres,carbon nanotubes,graphenes,phosphorus-doped graphenes,phosphorus and nitrogen co-doped graphenes.We proposed composite and doping to improve nature of carbon support.The carbon spheres ware composited with magnesium oxide by a situ reductive ways,MgO was wrapped on the surface of carbon to form a core-shell structure;it proved that the activity of Ru/C was promoted by composited.In addition,doped graphenes' catalyst activity promoted as the increasing of P-doped,the NP-doped graphenes support section has proved that phosphorus doping could significantly improve the activity of Ru/C and benefit for Ru particles dispersion,In short,study on Ru catalysts is very important to promote and achieve an efficient ammonia decomposition catalysts it will make ammonia as an ideal carrier of hydrogen for a new generation of clean energy.