PLATINUM CATALYST, METHOD FOR PREPARATION THEREOF, METHOD FOR REGENERATION THEREOF AND METHOD OF PRODUCING HYDROXYLAMINE SULPHATE

摘要

FIELD: chemistry.SUBSTANCE: catalyst contains 0.3-1 wt % platinum which is deposited on a non-porous or porous carbon support. The supported platinum is in the form of particles with size less than 4 nm, wherein more than 80 wt % of the platinum from the total amount of metal is concentrated in the form of X-ray amorphous particles. The invention also relates to methods preparing and regenerating the described catalyst and a method of producing hydroxylamine sulphate via catalytic selective hydrogenation of nitrogen oxide in a sulphuric acid medium in the presence of said catalyst.EFFECT: use of the disclosed catalyst improves selectivity of formation of hydroxylamine sulphate during catalytic hydrogenation of nitrogen oxide in sulphuric acid solutions on platinum catalysts supported by non-porous or porous carbon supports.5 cl, 3 dwg, 4 tbl, 12 ex