Abstract
The hydrogen—edible oil interfacial area has been determined in a 13 l agitated glass reactor using a fast hydrogenation reaction in the presence of a homogeneous Ziegler—Natta catalyst. The catalyst is a combination of aluminium tri-isobutyl and nickel di-isopropyl salicylate. The reaction kinetic data of the hydrogenation have been given and the reliability of the data used to determine the interfacial area has been demonstrated. The area has been measured as a function of the agitator speed and location, the number of agitator blades, the superficial gas velocity and a solid phase sodium sulphite (Kieselguhr) concentration. Under analogous conditions of agitation, the mean gas bubble diameter of hydrogen in oil has been compared with that of air in an aqueous solution of sodium sulphite. The bubble diameter in the two systems is of the same order of magnitude. The probable reasons are briefly discussed.
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