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Monitoring of the transesterification reaction by continuous off-line density measurements
(Elsevier, 2020-03)
The main route for industrial production of biodiesel is through the transesterification reaction of different source of triglycerides. Continuous monitoring of the process is very important in order to optimize operational ...
Synthesis of fatty acid methyl esters from pomace oil catalyzed by zinc stearate: A kinetic study of the transesterification and esterification reactions
(Multidisciplinary Digital Publishing Institute, 2019-12)
In this work, the simultaneous transesterification and esterification reactions of olive pomace oil with methanol catalyzed by zinc stearate were studied. This catalyst is a crystalline solid at room temperature, but it ...
Epoxy vitrimers: The effect of transesterification reactions on the network structure
(MDPI AG, 2018-01-03)
Vitrimers are covalently crosslinked polymers that behave as conventional thermosets below the glass transition temperature (Tg) but can flow above a particular temperature, Tv > Tg, by bond exchange reactions. In epoxy ...
Insights on the catalytic behaviour of sulfonic acid-functionalized ionic liquids (ILs) in transesterification reactions - voltammetric characterization of sulfonic task-specific ILs with bisulfate anions
(Royal Society of Chemistry, 2021-01)
This work shows for the first time the link between the amount of free sulfuric acid (as detected by cyclic voltammetry) and the activity of sulfonic-acid-functionalized ionic liquids (ILs) as acid catalysts for a ...
Insights in the biocatalyzed hydrolysis, esterification and transesterification of waste cooking oil with a vegetable lipase
(Elsevier Science, 2020-10)
The present contribution investigates the biocatalytic performance of the lipase obtained from the latex of the native plant known as Araujia sericifera (ASL) in the hydrolysis followed by the esterification of released ...
Transesterification of soybean and castor oil with methanol and butanol using heterogeneous basic catalysts to obtain biodiesel
(Pergamon-Elsevier Science Ltd, 2018-09)
This paper focuses on the preparation and characterization of CaO, MgO and ZnO, both bulk and supported on γ-Al2O3 and their catalytic activity in the transesterification of soybean oil and castor oil with methanol and ...
Biodiesel production from Halamphora coffeaeformis microalga oil by supercritical ethanol transesterification
(Elsevier Science Sa, 2019-11)
The marine benthic diatom Halamphora coffeaeformis is a potential feedstock for biodiesel production. Thisspecies shows high growth rates, important triacylglycerol (TAG) contents and grows in seawater makinglarge-scale ...
Potassium-containing hydroxylated hydrotalcite as efficient catalyst for the transesterification of sunflower oil
(Springer, 2018-09)
Different hydrotalcite-based materials were evaluated as heterogeneous catalysts for the transesterification of sunflower oil with methanol. A set of compounds based on magnesia-alumina structures (MgAl hydrotalcites) were ...
Significant effects of the anion on the catalytic behaviour of sulfonic acid-functionalized ionic liquids in transesterification reactions – A combined electrochemical/catalytic study
(Elsevier, 2021-08)
This work studies the strong influence of the counterion on the performance of ionic liquids (ILs) with sulfonic acid-functionalized butyl-imidazolic bases as homogeneous acid catalysts. Through a voltammetric analysis, ...
Epoxy vitrimers with a covalently bonded tertiary amine as catalyst of the transesterification reaction
(Pergamon-Elsevier Science Ltd, 2019-02)
Tertiary amines are one of the typical catalysts used to accelerate transesterification reactions in epoxy vitrimers. Instead of adding a tertiary amine (e.g. tributylamine, TBA) to the initial formulation, secondary (e.g. ...