Performance of the Ni catalyst in the steam reforming of ethanol
WU Feng, LIU Yuan,SUN Jie, CHEN Shi, WANG Guo-qin (School of Chemical and Environmental Science, Beijing Institute of Technology, Beijing 100081 , China)
Fuel cells directly and efficiently change the chemical energy in the fuels and oxidant into electricity energy. Pure and innocuous hydrogen is an ide al fuel for fuel cells. Now liquid fuel reforming is a better way to produce hyd rogen. As the liquid fuel for reforming, ethanol has so many strongpoints such a s recycle, innocuity, having no sulfur which poisons Pt electrode of fuel cells, and so on. So it is a kind of environment friendly fuel for reforming. The reac tion activity for steam reforming of ethanol on Ni /g -Al2O3 catalyst with CeO2 and Y2O3 as promoters were investigated. It was found that the promoter can impr ove the phase composition of catalyst and the catalysts with a promoter exhibit higher H2 yield and lower CH4 selectivity. The catalyst promoted by CeO2 has bet ter activity, at 600 ℃, the H2 yield on the 16% Ni / CeO2 /g -Al2O3 can reach 4 .7, the selectivity of CO2,CO and CH4 is 70.7%,21% and 7% respectively.
【CateGory Index】： TM911.4