CATALITICALLY ACTIVE AMORPHOUS POROUS SOLID SUBSTANCE AND METHOD OF ITS PREPARATION

FIELD: chemistry. ^ SUBSTANCE: catalytically active amorphous porous solid substance is used for catalysed with acids industrial chemical processes such as, for example alkylation, isomerisation, hydrogenation-dehydrogenation, which include mixed silicon, aluminium and phosphorus oxide. Ratio Si/Al is from 20 to 250, ratio P/AI is from 0.1 to 3.5. General pore size is from 0.5 to 2.0 ml/g, average pore diameter is from 3 to 40 nm, and specific surface area is from 200 to 1000 m2/g. Method of its obtaining includes : water mixture preparation, which includes tetraalkylammonium hydroxide, hydrolysed aluminium compound, hydrolysed silicon compound and oxygen-containing phosphorus compound in such proportions, that atomic ratio Si/Al is from 10 to 250, and ratio P/Al is from 0.1 to 3.5, and amount of water, sufficient for solution and hydrolysis of said compounds. Heating of this mixture in alkaline medium, preferably supporting pH value higher than 10, and in such way that mass-exchange with surrounding environment in fact does not take place, to achieve gel formation, and its further drying and calcination. Invention also belongs to catalytically active solid composition and method of its preparation, which includes mixture formation, which contains from 30 to 99% wt, of said amorphous substance and from 70 to 1 % wt of inert inorganic binding agent, extrusion , drying and calcination of obtained mixture. ^ EFFECT: increased activity and selectivity in comparison with traditional amorphous alumosilicate gels. ^ 27 cl, 20 ex, 5 tbl