METHOD FOR PRODUCING HIERARCHICAL POROUS MOLECULAR SIEVE TS-1 Russian patent published in 2022 - IPC C01B39/04 B01J29/89 C07D301/12 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for producing a hierarchical porous molecular sieve TS-1 and an application thereof in the reaction of selective oxidation of organic substances in the presence of H₂O₂. The method includes: a) mixing a silicate, a titanate, and a polybasic alcohol, followed by interesterification in the conditions of mixing and in a protective nitrogen atmosphere, wherein the reaction temperature is in the range from 80 to 180°C, and the duration of the reaction is in the range from 2 to 10 hours, b) after the reaction at stage (a), performing vacuum distillation resulting in a silicate-titanate ester polymer, wherein the degree of vacuum is in the range from 0.01 to 5 kPa, the reaction temperature is in the range from 170 to 230°C, and the duration of the reaction is in the range from 0.5 to 5 hours; c) mixing the silicate-titanate ester polymer produced at stage (b) with an organic base matrix and water and sustaining the resulting mixture at a temperature not above 120°C for a sustaining time in the range from 0 to 100 hours, resulting in a gel-like mixture; d) crystallysing the gel-like mixture produced at stage (c) in sealing conditions, resulting in a hierarchical porous molecular sieve TS-1, wherein the crystallisation temperature is raised to a range from 100 to 200°C, and the duration of crystallisation is in the range from 1 to 30 days under autogenous pressure; e) after the crystallisation is completed, separating the solid product, washing with deionised water to a neutral state, and drying, resulting in a hierarchical porous molecular sieve TS-1. The organic base matrix contains compound A, constituting at least one of quaternary ammonium salts or quaternary ammonium bases, and optionally additionally contains compound B, constituting at least one of aliphatic amines or amino alcohols.

EFFECT: high activity and stability of the molecular sieve TS-1.

14 cl, 4 dwg, 2 tbl, 8 ex