The Properties of Water-in-Oil Emulsions of Aqueous Solutions of Precursors for Nanosized Catalysts

Resumo

The preparation of water-in-oil (w/o) emulsions on the basis of aqueous solutions of precursors for catalysts of hydrocarbon hydroconversion is a key stage of the production of nanosized dispersions of catalyst particles. The paper presents the results of a study of the regularities for the formation of w/o emulsions of aqueous solutions of the following precursors for hydroconversion catalysts: (NH₄)₆Mo₇O₂₄, (NH₄)₂WO₄, Fe(NO₃)₃, and Ni(NO₃)₂. The effects of the aqueous phase composition and the presence of nonionic surfactants on the properties of the w/o emulsions have been determined. It has been shown that native surface-active components of oil products are highly efficient stabilizers of emulsions containing precursors for hydroconversion catalysts.