The hydrolysis of rapeseed oil in sub- and supercritical water (T = 573–653 K, p = 30 MPa) has been studied using a batch setup. Unlike traditional hydrolysis, the hydrothermal process involves in situ change of the fatty acid composition as a result of the transformation of linoleic acid to oleic acid, and there is the possibility of selective isolation of the latter with a purity sufficient for its use for technical purposes without special purification. A stepwise mechanism of the hydrothermal process has been proposed on the basis of analysis of transformation products of individual linoleic acid.

Исследованы химические стадии процесса получения ди(2-этилгексилового) эфира азелаиновой кислоты из рапсового масла - реакции гидролиза исходного масла; окисления олеиновой кислоты в присутствии Pd-cодержащего гетерогенного катализатора; этерификации азелаиновой кислоты. Процессы гидролиза и этерификации осуществляются в сверхкритических (СКФ) условиях (523-653 K и 22,5-30 МПа). Three chemical stages of azelaic acid 2-ethylhexyl ester synthesis based on rapeseed oil were studied: hydrolysis of the initial oil, oxidation of oleic acid in the presence of palladium-containing heterogeneous catalyst, and esterification of azelaic acid. It is demonstrated that reactions hydrolysis and esterification can be efficiently carried out under supercritical conditions (523-653 K and 22.5-30 MPa).

The chemical stages of the process of preparation of azelaic acid di(2-ethylhexyl) ester from rapeseed oil are studied—the reactions of hydrolysis of the initial oil, oxidation of oleic acid in the presence of a Pd-containing heterogeneous catalyst, and esterification of azelaic acid. The processes of hydrolysis and esterification are carried out under supercritical (SC) conditions (523–653 K, 22.5–30 MPa).

Экспериментально исследовано окисление уксусной кислоты (УК) в 10%-ном водном растворе при 673-748 K и 25 МПа на установках периодического и непрерывного действия. В качестве окислителя использован пероксид водорода. Степень превращения УК определена на основании показателя химического потребления кислорода. The oxidation of acetic acid (AA) in its 10 % aqueous solution at 673-748 K and 25 MPa is studied in periodic and continuous regimes. Hydrogen peroxide is used as an oxidant. The degree of AA conversion is determined based on the oxygen chemical consumption index.