Kinetic Regularities of Canola Oil Amidation by Aminoethylethanolamine

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Studies in Chemical Process Technology (SCPT) Volume 2, 2014 www.as‐se.org/scpt

Kinetic Regularities of Canola Oil Amidation by Aminoethylethanolamine Kramarev Sergiy*1, Malik Sergii2 Technology of fats and fermentation products department, National Technical University "Kharkiv Polytechnic Institute", 61002, Frunze str. 21, Kharkiv, Ukraine *1

kramarevsergey@yahoo.com; 2malik_sg@ukr.net

Abstract Amidation reaction of canola oil with aminoethylethanolamine has been investigated. Researches have been conducted in batch reactor in temperature range from 140°C to 180°C and molar ratio of components is 1:3. Concentrations of reagents and main reaction products have been determined. Main regularities of formation and consumption of main components of reaction masses have been determined. Ratio constants of amidation reactions have been calculated. Determined that increasing of reaction temperature leads to significant speeding of reactions and as a result increasing of ration constants. Keywords Amidation; Kinetic; Concentration; Canola Oil; Ratio Constant

Introduction Nitrogen‐containing surface‐active substances (SAS) are widely used in different industries for production of fabric softeners, antistatics, corrosion inhibitors, bactericides, emulsifiers, detergents etc [1, 2]. Substituted alkylimidazolines are one of the most commonly used among all nitrogen‐containing SAS. Properties of such compounds are highly dependant on substitute that connected with imidazoline ring [1‐3]. Including imidazoline type SAS one of the main type of raw materials for SAS production, is coconut oil or fatty acids of coconut oil [4]. Usage of other types of vegetable oils and fats, including oils with C18 acids, for SAS production is becoming more and more popular. Processes and technologies of SAS producing from coconut oil are well researched [4]. Use of another type of raw material will lead to significant changes not only in properties of obtained products but in passing of reactions as well. Even though products of amidation of long chain oils are widely used in the industry, there is not enough information about these reactions. Researches of such reactions and obtaining new kinetic data interest the chemical industry. Experiment Canola oil is one of the most popular oils for technical use. It produced in large quantities all around the world and that is the reason why canola oil has been used for these researches. Obtaining nitrogen containing substances of imidazoline type has been conducted by a direct amidation of canola oil with aminoethylethanolamine (AEEA). The reason why this amine has been chosen is that products of such reactions are hydroxyethylimidazolines, which are widely used imidazoline SAS. Reagents for that research were canola oil and aminoethylethanolamine supplied by Warenhandel GmbH & Co (Germany) and Merck KGaA (Germany) respectively. These reactions have been conducted in batch reactor with automatic maintaining of temperature and continuous agitation. Reactor is equipped with nitrogen supply for preventing oxidation of reagents. Syntheses have been conducted during one hour intemperature range from 140°C to 180°C. Samples out of synthesis of reaction masses determine the aminoethyethanolamine, amidoamines, alkylimidazolines and acylglycerines content. Results and Discussion It’s well known [5] that reactions of acylglycerol with amines, ammonia and other nucleophilic reagents are second order reactions and common scheme of such reactions could be presented as the following: TAG+AEEA →DAG+AA (1) DAG+AEEA →MAG+AA (2)

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