Anion exchange kinetics with participation of cinchomeronic and dipicolinic acids


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Abstract

The rate of sorption and desorption of cinchomeronic and dipicolinic acids on the AB-17-8 strongly basic anion exchanger is limited by slow diffusion of components in the polymer phase. The diffusion coefficient of the organic anion in the phase of the AB-17-8 anion exchanger is equal to (3.7±0.5)•10–12 m2 s–1. Taking into account high rates of desorption of anions of cinchomeronic and dipicolinic acids from anionite (the half-transformation time is 6 min), the AB-17-8 strongly basic anion exchanger can be recommended for use as a container for development of prolonged drugs based on pyridinedicarboxylic acids.

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H. N. Altshuler

Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences

Author for correspondence.
Email: altshulerh@gmail.com
Russian Federation, 18 Sovetsky prosp., Kemerovo, 650000

G. Yu. Shkurenko

Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences

Email: altshulerh@gmail.com
Russian Federation, 18 Sovetsky prosp., Kemerovo, 650000

O. H. Altshuler

Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences; Kemerovo State University

Email: altshulerh@gmail.com
Russian Federation, 18 Sovetsky prosp., Kemerovo, 650000; 6 ul. Krasnaya, Kemerovo, 650043

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