INVESTİGATİON OF THE REACTİON OF OBTAİNİNG HYDROGEN FROM ETHANOL OVER BİNARY NİCKEL-SERIUM OXİDE CATALYSTS

Abstract

In the presented work, we had investigated the reaction of steam conversion of ethanol to hydrogen over binary nickel-cerium oxide catalysts of various alignments. It is also resoluted that hydrogen yield at a maximum temperature of 600 ° C reaches 76.5%, and the reaction products above 500 ° C contained only hydrogen, methane and carbon monoxide. It was found that the atomic ratio of nickel to them affects the activity of oxide catalysts Ni-Ce-O in the reaction of steam reforming of ethanol. Thus, as the amount of nickel oxide in the catalyst increases, the hydrogen yield in the Ni-Ce = 5-5 catalyst gradually exceeds the maximum by 82.3%. Based over the X-ray phase analysis, it was initiated that two phases are formed in the Ni-Ce-O catalytic system: NiO and CeO2, and the ratios change according to the directions. The yields of the reaction products and the degree of crystallinity of the catalysts are compared. It was initiated that with an increase in the degree of crystallinity of the trial, the yield of hydrogen passes through a maximum, while the yield of methane passes through a minimum, and the yield of carbon monoxide declines. Keywords: binary catalysts, hydrogen, bioethanol, methane, crystallinity, steam reforming, activity, carbon monoxide.