Combined Synthesis and Hydroprocessing of Hydrocarbons over Co/SiO2 + ZSM-5 + Al2O3 Catalysts Promoted by Nickel

Abstract

Abstract: The study investigates the effects of nickel introduction methods on theproperties of a hybrid cobalt catalyst in a combination of Fischer–Tropschsynthesis and the hydroprocessing of the synthesized products. At 240°C, 2 MPa,and syngas WHSV 1000 h–1, the catalytic performanceswere compared, the products were analyzed for the hydrocarbon and fractionalcompositions, and the characteristics of the synthesized fuels were determined.Among the catalysts differing in nickel introduction method, the sample with anickel-containing zeolite component prepared by ion exchange was found to havethe highest hydrogenation activity, while the sample with a metal componentgenerated by joint cobalt/nickel introduction [Co/SiO2 +Ni(i)/HZSM-5 + Al2O3] exhibitedthe highest isomerization activity.