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Issue
Korean Journal of Chemical Engineering,
Vol.31, No.1, 37-44, 2014
Catalytic performance and characterization of cobalt-nickel nano catalysts for CO hydrogenation
Feyzi M, Babakhanian A, Gholivand B
A series of Co-Ni nano catalysts were prepared by co-precipitation method. We investigated the effect of Co/Ni molar ratios precipitate and calcination conditions on the catalytic performance of cobalt nickel catalysts for Fisher-Tropsch synthesis (FTS). The catalyst containing 90%Co/10%Ni was found to be optimal for the conversion of synthesis gas to light olefins. The activity and selectivity of the optimal catalyst were studied in different operational conditions. The results show that the best operational conditions are the H2/CO=2/1 molar feed ratio at 310 ℃ and GHSV=1,200 h^(-1) under 5 bar of pressure. The prepared catalysts were characterized by powder X-ray diffraction (XRD), N2 adsorption-desorption measurements such as BET and BJH methods, transmission electron microscopy (TEM) and thermal gravimetric analysis (TGA).
Keywords: Nano Catalysts; Co-precipitation; Light Olefins; Operational Conditions
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