ИСТИНА

The study of processes, which are proceeded in the system: “supercritical fluid of primary alcohols - the hydroxide of aluminum (Т = 400 C, Р=20MPa)”, has shown, that the processes in fluid and in solid phase are interdependent. The water removed from aluminum hydroxide during its transformation in corundum, promotes the oxidation reactions of alcohols and products of their catalytic pyrolysis (catalyst – aluminum hydroxide and then boehmite and corundum). On the other hand the grafting of alkyls - groups to aluminum-oxygen frame changes the process of the forming of crystals of corundum and intermediate phase, boehmite, slowing down the growth of some faces, for example, in case of formation of corundum of a face C. It results in the formation of the plate crystals of corundum and boehmite.