Study On Synthesis Of Higher Alcohols By Catalytic Hydrogenation Of Co

This paper conducted a study on synthesis of higher alcohols by catalytic hydrogenation of CO in a fixed bed reactor. Two kinds of methods for preparation of Cu-Co-based catalyst has been dealt with in this paper, one was by co-precipitation way, the other was by impregnation way. The impact of different additive amounts of K, Ce and Zr on catalytic properties of Cu-Co/SiO2catalyst was discussed. The optimum reaction temperature, reaction pressure and amount of catalyst addition has been determined by conversion ratio of hydrogen and carbon monoxide, selectivity of methane, carbon dioxide and total alcohol, space-time yield of alcohol and distribution of alcohol. Deep research and analysis on catalytic properties has been carried out by the BET, XRD and TPR, in which the physical structure and surface phase has been affected by different catalyst additives, especially the specific surface area and the dispersion, and the reducibility of the catalyst have been significantly affected. The results showed that:the space time yield-and the selectivity of alcohol increased, and the selectivity of CH4was reduced The optimal reaction temperature of producing higher alcohols reaction was300℃; The suitable reaction pressure was5Mpa The optimal addition dosage of K2O, CeO2and ZrO2on catalytic properties of Cu-Co/SiO2catalyst was0.2%,0.2%and4%.