Continuous catalyst-free interesterification of crambe oil using methyl acetate under pressurized conditions. (1st May 2019)

• Record Type: Journal Article
• Authors: Postaue, Najla; Trentini, Caroline Portilho; de Mello, Bruna Tais Ferreira; Cardozo-Filho, Lúcio; da Silva, Camila
• Is Part Of: Energy conversion and management. Volume 187(2019)
• Page Start: 398
• Page End: 406
• Publication Date: 2019-05-01
• Subjects: Methyl acetate -- Methyl esters -- Triacetin -- Water; Direct energy conversion -- Periodicals; Energy storage -- Periodicals; Energy transfer -- Periodicals; Énergie -- Conversion directe -- Périodiques; Direct energy conversion; Periodicals; 621.3105
• DOI: 10.1016/j.enconman.2019.03.046
• Languages: English
• ISSNs: 0196-8904

Abstract

Graphical abstract: Highlights: Production of methyl esters and triacetin from crambe oil and methyl acetate. Increasing the amount of methyl acetate used had little influence on the yield. High temperature raise the formation of products at time initial of the reaction. Thermal decomposition was observed related to linoleate and linolenate esters. Higher yield was obtained with 10 wt% of water added to the oil. Abstract: In this study the continuous production of fatty acid methyl esters (FAME) and triacetin from crambe oil and methyl acetate (MA), without the use of catalysts, was investigated. The effects of the oil to MA mass ratio, reaction temperature, addition of water (in the oil) and a two-step reaction on the formation of the products were determined. The results indicated that increasing the availability of MA in the reaction medium had little influence on the FAME yield. An increase in the temperature enhanced the formation of esters and triacetin in the initial minutes of the reaction; however, as the reaction proceeded thermal decomposition was observed, mainly at 350 °C. The sample composition revealed a high level of decomposition of linoleate and linolenate esters. A higher FAME yield was obtained with 10 wt% of water added to the oil (∼53%), as well as with the application of a two-step reaction (∼58%).