Effect of CO and Mo Metal Addition in Co-mo / Zeolite Y Catalyst for Coal Tar Conversion to Liquid Fuel

Coal tar can be used as an alternative source for the production of conventional liquid fuels such as gasoline and diesel, through the process of hydrogenation/ hydrocracking. This research is aimed to investigate the effect of Co and Mo in Co-Mo / zeolite Y catalyst in liquid fuel production from coal tar. The catalyst was prepared via wet impregnation. The objectives of this research are to determine the effect of the addition Co and Mo metals on liquid fuel production process from coal tar, and to know the characteristics of the catalysts by impregnation method. This study began with the preparation of Co-Mo / zeolite Y catalyst, followed by the hydrocracking / hydrotreating reaction between coal tar with hydrogen gases. The independent variables (weight cobalt metals and molybdenum metals) were optimised to obtain the optimum liquid fuels yield. The characterisation results indicated that the increasing concentration of Co and Mo caused the decreasing in the surface area of the catalyst. The acidity of catalysts changed with loaded Co and Mo to zeolite Y. Results of SEM and XRD analysis showed that the morphology and crystal form of Co-Mo / zeolite Y unchanged with zeolite Y before impregnated with Co and Mo. Optimum liquid fuel yield (1.80 %) was obtained on a composition weight with Co metal of 0.59 g and Mo metal of 0.5 g.

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