Penghidrogenan selanjar olein sawit dengan menggunakan mangkin platinum tersokong

Abstract

A catalytic hydrogenation rig based on a continuous flow process regime was designed, fabricated and installed to investigate the 3 phase reaction of palm olein. The three phases involved were liquid (palm olein) gas (hidrogen) and solid (Pt supported on Nylon-66). The microreactor (catalyst loading of 1.0g) was operated under isothermal conditions. The temperature of operation was in the range of 110 °C - 190 °C. Reactant flow rates were maintained at 0.32 mI/min for palm olein and 93.0 ml/min for hydrogen. The products of hydrogenation were analysed using gas chromatography. The extent of reaction as well as overall rate was measured from values of drop in iodine value. The products of hydrogenation were observed to be selective to the C18:1 and C18:2 fractions. The overall activation energy was found to be 52.07 kJ/mol, whilst that of the linoleic and oleic fractions were 27.07 kJ/mol and 49.85 kJ/mol respectively. The selective reaction mechanism was explained using the cluster model. In the model, the linoleic fractions were thought to be adsorbed on to active sites and thence converted to the oleic fractions. Further saturation was hindered