Experimental Study Of Removal NO By Activated Carbon Supported Vanadium Oxide And Copper Catalysis

Nitrogen oxides(NOX)is one of the major atmospheric pollutants present.How to control nitrogen oxide emissions has become imperative issues in the field of energy and environment. Current SCR technology with low running costs and save energy being more and more attention from researchers, but the main obstacle of the technology development in the low temperature range is activity poor, catalyst performance weak of resistant SO2poisoning, the reaction mechanism uncertainty and other issues. Therefore,todeveloplow-temperature SCR technology has important significance. Activated carbon has a large surface area, developed pore structure and surface functional groups and other rich features, and has good prospects and practical value in the low-temperature selective reduction (SCR)de-nitrification fields.This paper select coconut shell activated carbon what have excellent pore structure and using the impregnation method to prepared catalyst forthis subject of low efficient catalysts on the basis of previous studies, SCR active experiments was done to study the effects of different amounts of CuO loading V2O5/AC catalyst by Load CuO and V2O5active component to the activated carbon surface, through the analysis of the specific surface area (BET), and the aperture, X-ray crystal diffraction (XRD), scanning electron microscope (SEM) and energy spectrum analysis (EDS), and other characterization testing to determine the best CuO load. discover that activated carbon specific surface area largerafter nitric acid treatment; the catalyst surface area to reduce whenload CuO and V2O5active component,the comparison of different methods (BJH, HK, DFT) analysis of catalyst carrier aperture distribution, found the conclusions are basically the same by the different method to calculate different ways; XRD analysis shows CuO reaches monolayer covering on the surface of support when the CuO load was6%,10%CuO distribution is best. Scanning electron microscope (SEM) also confirmed this point. When CuO load is10% de-nitration was best.Secondly, the present study investigated different calcination temperature on the structural properties of the catalyst and by BET, XRD and de-nitrification experiments means of characterization and discover thatwhen the calcination temperature of400oC10Cu-2V/AC active component dispersed best, where was no obvious agglomeration, and better than300oC and500oC calcination temperature. so400oC is optimum calcination temperature.Finally, the present study investigated the effect of reaction temperature, O2volume fraction, NH3/NO ratio, airspeed and other operating conditions on catalyst properties, analysis the effect reasons of different operating conditions on catalyst performance, and concluded that the catalyst performance is the best when the volume fraction of O23%, NH3/NO ratio is1, the reaction temperature is200oC, and a space velocity is60000h-1.