Herald of Technological University Herald of Technological University ВЕСТНИК ТЕХНОЛОГИЧЕСКОГО УНИВЕРСИТЕТА 3034-4689 59630 ХИМИЯ, ТЕХНОЛОГИЯ И ИСПОЛЬЗОВАНИЕ ПОЛИМЕРОВ ХИМИЯ, ТЕХНОЛОГИЯ И ИСПОЛЬЗОВАНИЕ ПОЛИМЕРОВ OXIDATION OF ETHYLENE GLYCOL IN THE PRESENCE OF CATALYTIC SYSTEMS Sakharov A M Sakharov A M Sakharov P A Sakharov P A Zaikov G E Zaikov G E Jimenez A Jimenez A Abzaldinov K S Abzaldinov K S ov_stoyanov@mail.ru N.M. Emanuel Institute of Biochemical Physics Russian Academy of Sciences ru N.M. Emanuel Institute of Biochemical Physics Russian Academy of Sciences ru N.M. Emanuel Institute of Biochemical Physics Russian Academy of Sciences ru N.M. Emanuel Institute of Biochemical Physics Russian Academy of Sciences ru N.M. Emanuel Institute of Biochemical Physics Russian Academy of Sciences ru N.M. Emanuel Institute of Biochemical Physics Russian Academy of Sciences ru Alicante University, Chemical Faculty, Alicante, Spain ru Alicante University, Chemical Faculty, Alicante, Spain ru Kazan National Research Technological University ru Kazan National Research Technological University ru 01 08 2025 01 08 2025 15 20 118 122 19 04 2023 https://vestniktu.ru/en/nauka/article/59630/view

Исследована реакция окисления этиленгликоля (ЭГ) при низких температурах молекулярным кислородом в присутствии солей бивалентной меди и щелочи в воде и безводных растворах. Обнаружено, что при низких (близких к комнатной) температурах и в процессе, проводимом в безводных растворах, основным продуктом окисления ЭГ является муравьиная кислота. Повышение температуры с 20-40 оС до 80-90 оС или проведение реакции в водных растворах приводит к резкому изменению направления реакции. ЭГ в этих условиях окисляется с преимущественным образованием солей гликолевой кислоты. По-видимому, изменение направления реакции связано со снижением стабильности хелатных комплексов Cu 2 + -ионов с дианионной формой ЭГ.

Reaction of low temperature oxidations of ethylene glycol (EG) by molecular oxygen in the presence of salts of bivalent copper and alkali both in water and in waterless solutions was investigated. It was found that at low (close to room) temperatures and the process carrying out in waterless solutions the basic product of EG oxidation is formic acid. Rise the temperature from 20 – 40 о С to 80 – 90 о С or carrying out the reaction in the water-containing solutions leads to sharp change of a direction of reaction. EG in these conditions is oxidized with primary formation of glycolic acids salts. Change of a direction of reaction is connected, apparently, with decrease stability of chelate complexes of Cu 2 + -ions with dianionic form of EG.

окисление кислородом этиленгликоль катализ Cu 2 +-ионами образования муравьиной и гликолевой кислот oxidation by oxygen ethylene glycol Cu 2 + -ions catalysis formic and glycolic acids formations окисление кислородом этиленгликоль катализ Cu 2 +-ионами образования муравьиной и гликолевой кислот oxidation by oxygen ethylene glycol Cu 2 + -ions catalysis formic and glycolic acids formations

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