Open AccessELECTROCATALYTIC OXIDATION OF STARCH IN TWO-CHAMBER CELL WITH REGENERATION OF OXIDANT IN SITU ON ELECTRODES FROM Pb/PbO2 AND GRAPHITE
Author(s) -
Г. В. Корниенко,
Svetlaikolayevna Kapaeva,
Yuriy N. Malyar,
В. Л. Корниенко,
Oxana P. Taran
Publication year - 2021
Publication title -
himiâ rastitelʹnogo syrʹâ
Language(s) - English
Resource type - Journals
eISSN - 1029-5151
pISSN - 1029-5143
DOI - 10.14258/jcprm.20210410590
Subject(s) - electrolysis , starch , electrolyte , chemistry , graphite , supporting electrolyte , inorganic chemistry , iodate , nuclear chemistry , electrode , analytical chemistry (journal) , chromatography , organic chemistry , iodide
Electrocatalytic oxidation of potato starch was investigated potassium iodate in a two-chamber electrolytic cell with in situ regeneration of the oxidant on Pb/PbO2 and graphite electrodes, depending on the current density, electrolyte pH and electrolysis time. To analyze the samples of the starting and oxidized starch, the methods of photometry, X-ray diffraction, gel permeation chromatography, and IR spectroscopy were used. The optimal conditions for starch dialdehyde production were determined: current density 50 mA/cm2, electrolyte pH 7, electrolysis time 80 min. and a temperature of 25 °С. The weight average molecular weights (Mw) of AIBN samples were determined, which are several orders of magnitude lower (104) than the average molecular weight of native starch (108).