Characteristics of carbon dioxide hydrogenation in a fluidized bed reactor

Characteristics of CO2 hydrogenation were investigated in a fluidized bed r eactor (0.052 in ID x 1.5 in in height). Coprecipitated Fe-Cu-K-Al catalyst (d(p)=75-90 mum) was used as a fluidized solid phase. It was found that th e CO2 conversion decreases but the CO selectivity increases, whereas the sp ace-time-yield attains maximum values with increasing gas velocity. The CO2 conversion has increased, but CO selectivity has decreased with increasing hydrogenation temperature, pressure or H-2/CO2 ratio in the fluidized bed reactor. Also, the CO2 conversion and olefin selectivity appeared to be hig her in the fluidized bed reactor than those of the fixed bed reactor.