CATALYTIC REDUCTION MECHANISM OF NITRIC OXIDE OVER ACFs/COPPER CATALYST

摘要

A widely used method for activated carbon fibers (ACFs)/Cu catalyst is nitric oxide reduction, which includes the process involved whenever nitric oxide (adsorbate) is brought into contact with a solid (adsorbent), and then reduced into nitrogen and oxygen. In this work, the catalytic reduction mechanisms of NO over ACFs/Cu prepared by electrolytic copper plating has been studied. It is found that copper content on carbon surfaces increases with increasing the plating time. As an experimental result, nitric oxide is converted into the nitrogen and oxygen on ACFs and ACFs/Cu catalyst surfaces at 500℃. Especially, the surfaces of ACFs/Cu catalyst were found to scavenge the oxygen released by catalytic reduction of NO, which could be explained by the presence of another nitric oxide reduction mechanism between ACFs and ACFs/Cu catalysts.