METHOD FOR PRODUCTION OF HIGHLY COORDINATED SULFATED CATALYST BASED ON MIXTURE OF METAL OXIDES, HAVING HIGH CRUSHING STRENGTH Russian patent published in 2022 - IPC B01J21/04 B01J21/06 B01J27/02 B01J31/02 B01J23/40 B01J37/04 

FIELD: chemistry.

SUBSTANCE: present invention relates to a highly coordinated sulfated catalytic composition before calcination and a method for the production of a highly coordinated sulfated catalytic composition. The method includes following stages: a) dissolution of zirconium nitrate or acetate in distilled water; b) precipitation of zirconium salt hydroxide from the stage (a), using diethylamine, washing it with bidistilled water, and drying; c) loading of sulfate ions to dried zirconium hydroxide obtained at the stage (b) with sulfate ions, using ammonium sulfate or ammonium persulfate with ammonia as a competing ion; d) reduction in a particle size of zirconium hydroxide loaded with sulfate ions, obtained at the stage (c) by grinding from 310 mcm to 44 mcm; e) reduction in a particle size of acidified aluminum oxide with a large surface area by grinding from 90 mcm to 44 mcm, and then mixing with particles obtained at the stage (d) in a ball mill to obtain a total particle size of less than 37 mcm; f) addition of the mixture obtained at the stage (e) to a liquid binder containing a mixture of α-amino acids, HNO₃, and H₂SO₄, and mixing, maintaining pH in the range from 1.5 to 3.8, where α-amino acids are a combination of α-amino acids with a non-polar side chain and a main side chain; (g) peptization followed by extrusion after settling the mixture obtained at the stage (f) for 30 minutes; (h) drying of extrudates obtained at the stage (g) at a temperature in the range of 100-200°C for 6 hours, followed by calcination; and (i) addition of a hydrogenating component. A mixture of α-amino acids has a molecular weight of ≤ 250, where α-amino acid with the non-polar side chain is selected from glycine, alanine, valine, leucine, isoleucine, methionine, proline, and phenylalanine, α-amino acid with the main side chain is selected from lysine, arginine, and histidine.

EFFECT: catalysts provide a high degree of conversion in a reaction of isomerization of hydrocarbons, while simultaneously having crushing strength in the range from 2.0 to 5.0 daN, which makes it possible to effectively use them on an industrial scale.

12 cl, 2 dwg, 6 tbl, 3 ex