METHOD OF PRODUCING NANOSIZED ZINC-CONTAINING ZEOLITE OF STRUCTURAL TYPE ZSM-5 IN PROTON FORM FOR HETEROGENEOUS CATALYSIS Russian patent published in 2024 - IPC B01J29/04 C01B39/02 C01B39/04 C01B39/38 C01B39/40 B01J37/34 B01J37/08 B01J37/04 

FIELD: inorganic chemistry.

SUBSTANCE: invention relates to inorganic chemistry and chemical technology, namely to methods of producing microporous materials with properties of molecular sieves and solid acids having cation-exchange properties, crystalline aluminosilicates with an ordered porous structure (zeolites), which can be used in various processes of heterogeneous catalysis and, in particular, in processes of petrochemistry and oil refining. Disclosed is a method of producing nanosized zinc-containing zeolite of structural type ZSM-5, involving mixing in water of the following initial components: silicon source – tetraethylorthosilicate, aluminium source – aluminium isopropoxide, template – tetra-n-propylammonium hydroxide, zinc nitrate hexahydrate, crystallisation of obtained mixture at high temperature and pressure in teflon autoclave under conditions of hydrothermal-microwave synthesis, separation of solid residue of obtained product, its washing with distilled water, drying and calcination of solid residue with removal of template to obtain nanosized zinc-containing zeolite of structural type ZSM-5, wherein mixing of initial components is carried out at molar ratio of components in final mixture of tetraethylorthosilicate : water : tetrapropyl ammonium hydroxide : aluminium isopropoxide : hexahydrate of zinc nitrate, equal to 1:4.2–4.4:0.2–0.3:0.006:0.003, and crystallisation under conditions of hydrothermal-microwave synthesis is carried out at temperature of 208–215 °C to obtain nanosized zinc-containing zeolite of structural type ZSM-5 directly in proton form.

EFFECT: simple method of producing nanosized zinc-containing zeolite of structural type ZSM-5, as well as obtaining nanosized zinc-containing zeolite of structural type ZSM-5, which does not contain a template.

4 cl, 3 dwg, 3 ex