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

Authors

DOI:

https://doi.org/10.15587/1729-4061.2018.122938

Keywords:

transesterification, aliphatic alcohols С2–С4, triglycerides, ionite, ions of metals

Abstract

We studied the reaction of transesterification of triglycerides of sunflower oil by aliphatic alcohols С2–С4 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 С2–С4 depends on the type of the immobilized ion of metal. It was shown that the cationite CU-2-8 with immobilized ions of Ni2+, Sn2+, Co2 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 С2–С4 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 С2–С4.

Author Biographies

Yuriy Melnyk, Lviv Polytechnic National University S. Bandery str., 12, Lviv, Ukraine, 79013

PhD, Associate Professor

Department of Technology of Organic Products

Stepan Melnyk, Lviv Polytechnic National University S. Bandery str., 12, Lviv, Ukraine, 79013

Doctor of Technical Sciences, Associate Professor

Department of Technology of Organic Products

Zoryana Palyukh, Lviv Polytechnic National University S. Bandery str., 12, Lviv, Ukraine, 79013

Postgraduate Student

Department of Technology of Organic Products

Bohdan Dzinyak, Lviv Polytechnic National University S. Bandery str., 12, Lviv, Ukraine, 79013

Doctor of Technical Sciences, Professor

Department of Organic Products Technology

 

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Published

2018-02-07

How to Cite

Melnyk, Y., Melnyk, S., Palyukh, Z., & Dzinyak, B. (2018). Research into transesterification of triglycerides by aliphatic alcohols C2–C4 in the presence of ionites. Eastern-European Journal of Enterprise Technologies, 1(6 (91), 10–16. https://doi.org/10.15587/1729-4061.2018.122938

Issue

Vol. 1 No. 6 (91) (2018): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2018 Yuriy Melnyk, Stepan Melnyk, Zoryana Palyukh, Bohdan Dzinyak

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