Catalytic Performance for Hydrocarbon Production from Syngas on the Promoted Co-Based Hybrid Catalysts; Influence of Pt Contents

Abstract

Fischer-Tropsch synthesis (FTS) reaction from syngas was investigated on the Pt-promoted cobaltbased hybrid catalysts prepared by co-precipitation method in a slurry of ZSM-5 (Si/Al=25). The hybrid catalysts were compared with each other for the different content of Pt as a promoter and are characterized using BET, XRD, H2-TPR and NH3-TPD. Their physicochemical properties were correlated with the activity and selectivity of the catalysts. As results, all hybrid catalysts show the C5-C9 yield (%) higher than that of Co-Al2O3/ZSM-5 catalyst. The Pt-promoted hybrid catalysts were found to be more promising towards production of the hydrocarbons of gasoline range and over C10.

Catalytic Technologies for CO Hydrogenation for the Production of Light Hydrocarbons and Middle Distillates

“…Even strongly acidic sites showed no clear difference when the promoter was varied; however, the selectivity of C5-C9 was improved because of the strength of the weak acid points. Kang et al [120] reported the optimal Pt content is 0.3 wt%. They reported that, when the Pt content was increased, the C10+ selectivity increased.…”

“…Cho et al [122] investigated the FTS reaction and the structural characteristics of Fe2O3 catalysts as functions of the pore size of mesoporous KIT-6. The pore size was changed to ~0.7 nm (M7), ~5 nm (B5), 4 nm and 3.6 nm (B4), etc., and KFe/KIT-6 (B5) was used as a promoter Kang et al [120] reported the optimal Pt content is 0.3 wt%. They reported that, when the Pt content was increased, the C 10 + selectivity increased.…”