Verlauf der Hydrierung pflanzlicher Öle - Makrokinetische Einflüsse

Course of Hydrogenation of Vegetable Oils-Macrokinetic Influence. Hydrogenation of vegetable oils is a complicated process whose course is not only influenced by the nature and properties of the catalyst and of the oil, which is to be hardened, of the temperature and pressure, but also by physical-chemical processes as adsorption, desorption and diffusion. During exploration of microkinetic phenomena, especially the way of formation of hydrogen dispersion in the reaction mixture and its influence on the curse of hydrogenation were investigated. Tne velocity and the character of hydrogenation were investigated. The velocity and the character of hydrogenation are significantly influenced by material transfer whose data are essentially changed by the shape of the stirrer, the rotation velocity and the way of the hydrogen supply. By increase of the efficiency of the flushing of Ni-catalyst particles with hydrogen the reaction velocity increases nearly in one scale of magnitude. Simultaneously the selectivity in dependence on the way of stirring of the reaction mixture and the hydrogen distribution was expressed.