Application of Cryoeffect to Preparation of Highly EffectiveHydrodesulfurization Catalyst from Microemulsion

摘要

The expanding use of low-quality crude oil materials in refinery demands the creation of new-generation catalysts for the comprehensive hydrorefinery of hydrocarbon fraction. A technology was devel-oped for the preparation of catalysts based on mesoporous titanium silicate Ti_(0.03)Si_(0.97)O_2 with NiO nanocrystals (4.1-4.7 nm) incorporated in pores. Two methods were suggested for preparation of composite catalytic systems: first, the NiO phase was formed directly in pores of titanium silicate from microemulsion; second, NiO crystallites were prepared by cryoprocessing of initial colloid and incorporated as microsuspension in Ti_(0.03)Si_(0.97)O_2 pores. In the latter case, the formation of new bonds was found between silicate and NiO, evidencing the formation of a material with new physicochemical properties. The reported results can be applied to the development of mesoporous catalysts for the hydrorefinery of oil fraction.