Production of a Biofuel that Keeps the Glycerol as a Monoglyceride by Using Supported KF as Heterogeneous Catalyst

Production of a Biofuel that Keeps the Glycerol as a Monoglyceride by Using Supported KF as Heterogeneous Catalyst

This study describes the results obtained in the synthesis of a biofuel that avoids the production of glycerol by applying supported KF as alkaline heterogeneous catalyst, to generate two moles of fatty acid methyl esters and one mole of monoglyceride from one mol of triglyceride. In this respect, t...

Full description

Saved in:
Bibliographic Details
Published in:Energies (Basel) Vol. 7; no. 6; pp. 3764 - 3780
Main Authors: Calero, Juan, Cumplido, Gema, Luna, Diego, Sancho, Enrique D, Luna, Carlos, Posadillo, Alejandro, Bautista, Felipa M, Romero, Antonio A, Verdugo-Escamilla, Cristobal
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-06-2014
Subjects:
biodiesel
Biodiesel fuels
Biofuels
Catalysts
Efficiency
Engines
Fatty acids
Fuels
Glycerol
Glycerols
Magnesium oxide
methanolysis
Methyl alcohol
Moles
monoacylglycerol
Monoglycerides
Oils & fats
Sunflower oil
supported KF
Vegetable oils
Spain
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study describes the results obtained in the synthesis of a biofuel that avoids the production of glycerol by applying supported KF as alkaline heterogeneous catalyst, to generate two moles of fatty acid methyl esters and one mole of monoglyceride from one mol of triglyceride. In this respect, the selective transesterification process of sunflower oil with methanol was carried out with KF (10 wt%) supported on three different solids, Al2O3, ZnO and MgO. The standard experimental conditions employed in the heterogeneous selective methanolysis reaction were: 12 mL of sunflower oil, 2.7 mL of methanol, 0.8 g of catalyst, at 65 degree C temperature and one hour of reaction time. In all cases 100% conversion was obtained, with high selectivity values, greater than 90%, and quite suitable viscosity values, 4.5-8.5 cSt. In this way, the best catalytic behavior in the first use was obtained by using Al2O3 as support. However, although in the five consecutive reuses all catalysts exhibited a continuous decrease in their catalytic activities; the lower one was for KF catalyst using MgO as support. In summary, these three KF supported catalysts are very suitable to obtain a new biofuel, similar to conventional biodiesel, applicable to diesel engines.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1996-1073
1996-1073
DOI:10.3390/en7063764