METHOD FOR PRODUCING A MOULDED ARTICLE CONTAINING ZINC AND A TITANIUM-CONTAINING ZEOLITE Russian patent published in 2021 - IPC B01J29/89 B01J29/70 B01J37/02 C01B39/08 C01B39/12 C07D301/12 

FIELD: working of metal.

SUBSTANCE: invention relates to a method for producing a moulded article containing zinc and a titanium-containing zeolitic material with an MWW frame structure type, including (i) providing a moulded article containing a titanium-containing zeolitic material with an MWW frame structure type; (ii) producing an aqueous suspension containing a zinc source and a moulded article containing the titanium-containing zeolitic material with an MWW frame structure type produced at stage (i); (iii) heating the aqueous suspension produced at stage (ii) at an autogenous pressure to a temperature of the liquid phase of the aqueous suspension in the range from 100 to 200°C, producing an aqueous suspension containing a moulded article; and (iv) separating the moulded product from the liquid phase of the suspension produced at stage (iii); wherein at stage (ii), the zinc source comprises a zinc compound, water-soluble at a temperature and pressure of the liquid water phase according to stage (iii). The invention also relates to a moulded article as a catalyst for epoxidation of hydrocarbon, produced by the described method or containing zinc and a titanium-containing zeolite material with an MWW frame structure type, wherein the mass ratio of zinc and the titanium-containing zeolite material with the MWW frame structure type in the moulded article is in the range from 0.01:1 to 0.075:1, wherein at least 99 wt.% of the moulded article consists of zinc, Ti, Si, O and H, and wherein said product has an adsorption capacity with respect to water in the range from 8 to 12 wt.%. Disclosed is an application of the moulded article as a catalyst for epoxidation of hydrocarbon with at least one carbon-carbon double bond.

EFFECT: content of zinc in the moulded article according to the present invention significantly higher when using a significantly smaller amount of the source of zinc, high catalyst activity and mechanical strength.

18 cl, 1 tbl, 1 ex