English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We studied the reaction of transesterification of triglycerides of sunflower oil by aliphatic alcohols С 2 –С 4 in the presence of the cationite CU-2-8 in H-form and with the immobilized ions of metals and the anionite AV-17-8. We investigated the influence of the type of ionite, immobilized cation of metal, the structure of alcohol, molar ratio of triglyceride:alcohol, temperature, and the content of catalyst in the reaction mixture on the rate of reaction of transesterification and conversion of triglycerides. It was established that the activity of catalysts, based on the cationite CU-2-8 with immobilized ions of metals, in the reaction of transesterification of triglycerides by alcohols С 2 –С 4 depends on the type of the immobilized ion of metal. It was shown that the cationite CU-2-8 with immobilized ions of Ni 2+ , Sn 2+ , Co 2 and in H-form demonstrates the highest activity in the reaction of transesterification. It was established that in the presence of the examined catalysts conversion of triglycerides decreases with an increase in the length of the alcohol chain. Extreme dependence of the rate of transesterification reaction and conversion of triglycerides on the content of the catalyst–ionite was established. Optimum conditions for the reaction of transesterification of triglyceride by aliphatic alcohols С 2 –С 4 were found. It was established that optimal content of catalyst is 2 % by weight; molar ratio of alcohol:TG for ethanol, propane-1-ol and propane-2-ol is (4‒5):1, for butane-1-ol, it is 10:1. The temperature of reaction should be close to the boiling temperature of alcohol. It was shown that the examined catalysts demonstrate high activity in the reaction of transesterification of triglycerides and make it possible to achieve high conversion rate of starting materials. The results obtained indicate the feasibility of applying catalysts based on the cationite CU-2-8 with immobilized ions of metals in the reaction of transesterification of triglycerides by alcohols С 2 –С 4 .

Research into transesterification of triglycerides by aliphatic alcohols C2–C4 in the presence of ionites