DEWAXING CATALYST SYSTEM Russian patent published in 2022 - IPC B01J29/70 C10G45/64 C10G65/04 

FIELD: chemical or physical processes.

SUBSTANCE: invention relates to a catalyst system for dewaxing hydrocarbon material and a method for dewaxing hydrocarbon material at temperature from 250 to 400 °C and pressure from 5 to 200x10⁵ Pa. Catalyst system comprises at least two catalytic sections, wherein the first section comprises a first dewaxing catalyst based on zeolite ZSM-12, and subsequent section contains a second dewaxing catalyst based on zeolite EU-2 and/or ZSM-48. Said zeolite ZSM-12 is present in the first catalyst composition in amount of not less than 15 wt. % and not more than 60 wt. %. First catalyst composition further comprises a binder selected from titanium dioxide, zirconium dioxide and/or silicon dioxide, in amount of not less than 30 wt. % and not more than 90 wt. % in terms of dry weight of said composition. Said zeolite EU-2 and/or ZSM-48 is present in the second catalyst composition in amount of not less than 25 wt. % and not more than 65 wt. %. Second catalyst composition further comprises a binder selected from titanium dioxide, zirconium dioxide and/or silicon dioxide, in amount of not less than 30 wt. % and not more than 85 wt. % in terms of dry weight of said composition. Both the first and second catalyst compositions contain a component in the form of a noble metal selected from the group consisting of palladium and platinum.

EFFECT: catalyst system exhibits improved performance and output of base oil.

6 cl, 2 tbl, 1 dwg, 4 ex