Continuous catalyst-free interesterification of crambe oil using methyl acetate under pressurized conditions

[Display omitted] •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 relate...

Full description

Saved in:
Bibliographic Details
Published in:Energy conversion and management 2019-05, Vol.187, p.398-406
Main Authors: Postaue, Najla, Trentini, Caroline Portilho, de Mello, Bruna Tais Ferreira, Cardozo-Filho, Lúcio, da Silva, Camila
Format: Article
Language:English
Subjects:
Acetic acid
Catalysis
Catalysts
Continuous production
Crambe oil
Decomposition
Decomposition reactions
Esters
Fatty acid methyl esters
Fatty acids
Methyl acetate
Methyl esters
Oil
Temperature
Thermal decomposition
Triacetin
Water
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •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. 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%).
ISSN:0196-8904
1879-2227
DOI:10.1016/j.enconman.2019.03.046