Investigation of the Diethylamine Producing Process from its Salt by Bipolar Electrodialysis

Autor: Karpenko, T. V., Kovalev, N. V., Sheldeshov, N. V., Zabolotsky, V. I.
Zdroj: Membranes and Membrane Technologies; February 2022, Vol. 4 Issue: 1 p59-68, 10p
Abstrakt: Abstract: The effect of solutions concentrations located on both sides of the aMB-2m bipolar membrane during the production of diethylamine and sulfuric acid from diethylammonium sulfate on the frequency spectra of the electrochemical impedance of the aMB-2m bipolar membrane and on the current-voltage characteristic of the Ralex AMH membrane is investigated. The concentrations of the solutions have hardly any effect on the impedance of the aMB-2m membrane and significantly affect the current–voltage characteristic of the Ralex AMH membrane. The technical and economic characteristics of the electromembrane process of producing diethylamine and sulfuric acid from diethylammonium sulfate have been determined. The use of a modified aMB-2m bipolar membrane combined with a Ralex AMH heterogeneous anion-exchange membrane in an electrodialyzer provides the producing of diethylamine and sulfuric acid solutions with a concentration of about 0.5 and 0.9 mol-eq/L, respectively, from 0.5 mol-eq/L of diethylammonium sulfate.
Databáze: Supplemental Index
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