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2 815 094

(13)

(51)

IPC

C02F1/28(2006-01-01)

B01J20/18(2006-01-01)

B01J20/32(2006-01-01)

(21) (22)

Application

2023112013, 2023-05-11

(24)

Start date

2023-05-11

(22)

Actual filing date

2023-05-11

(45)

Published

2024-03-11

(72)

Inventor

Golubeva Nadezhda SergeevnaTimoshchuk Irina VadimovnaGorelkina Alena KonstantinovnaKondrateva Iuliia ViktorovnaGora Natalia Viacheslavovna

(73)

Holder

Federalnoe Gosudarstvennoe Biudzhetnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniia Gosudarstvennyi Universitet»

METHOD OF PURIFICATION OF AQUEOUS SOLUTIONS FROM DIMETHYLAMINE Russian patent published in 2024 - IPC C02F1/28 B01J20/18 B01J20/32

Abstract RU 2815094 C1

FIELD: adsorption technology.

SUBSTANCE: invention can be used for water treatment of process effluents from enterprises in the chemical and pharmaceutical industries. A method for purifying aqueous solutions from dimethylamine involves the use of a sorbent. Zeolite ZSM-5 is used as a sorbent, which is washed with distilled water and treated for 24 hours with a solution of caprolactam with a concentration of 0.5% at a ratio of zeolite mass in grams to solution volume in cm³ of 1:100. Next, the sorbent is heated for 2 hours at a temperature of 500°C in the air atmosphere.

EFFECT: ensured increase in the sorption capacity for dimethylamine.

1 cl, 3 tbl, 3 ex

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RU 2 815 094 C1

Authors

Golubeva Nadezhda Sergeevna

Timoshchuk Irina Vadimovna

Gorelkina Alena Konstantinovna

Kondrateva Iuliia Viktorovna

Gora Natalia Viacheslavovna

Dates

2024-03-11—Published

2023-05-11—Filed