Determination of the iodine value of biodiesel using 1H NMR with 1,4-dioxane as an internal standard
Issue date
2010Author
Oromí Farrús, Mireia
Suggested citation
Oromí Farrús, Mireia;
Villorbina Noguera, Gemma;
Eras i Joli, Jordi;
Gatius Cortiella, Ferran;
Torres i Grifo, Mercè;
Canela i Garayoa, Ramon;
.
(2010)
.
Determination of the iodine value of biodiesel using 1H NMR with 1,4-dioxane as an internal standard.
Fuel, 2010, vol. 89, núm. 11, p. 3489–3492.
https://doi.org/10.1016/j.fuel.2010.06.016.
Metadata
Show full item recordAbstract
Iodine values (IVs) of some biodiesel samples were analyzed using both 1H NMR and a standard iodometric method. 1H NMR was carried out with and without 1,4-dioxane as an internal standard (IS). The results obtained using 1H NMR with 1,4-dioxane as an internal standard showed better linear fitting and correlation with the iodometric method than NMR without the IS. The proposed 1H NMR_IS method allows determination of the IV using smaller samples than the iodometric method. Moreover, the determination can be carried out in less than 15 min, dramatically less than the time needed to carry out the iodometric method.
Is part of
Fuel, 2010, vol. 89, núm. 11, p. 3489–3492European research projects
Related items
Showing items related by title, author, creator and subject.
-
[BMIM][PF6] Promotes the synthesis of halohydrin esters from diols using potassium halides
Oromí Farrús, Mireia; Eras i Joli, Jordi; Villorbina Noguera, Gemma; Torres i Grifo, Mercè; Llopis-Mestre, Verónica; Welton, Tom; Canela i Garayoa, Ramon (Japan Society for Analytical Chemistry, 2008)Haloesterification of diverse diols with various carboxylic acids was achieved using potassium halides (KX) as the only halide source in ionic liquids. The best yield was obtained in [BMIM][PF6] when 1,2-octanediol, palmitic ... -
A tandem Finkelstein-rearrangement–elimination reaction: a straightforward synthetic route to allyl esters
Eras i Joli, Jordi; Escribà i Gelonch, Marc; Villorbina Noguera, Gemma; Oromí Farrús, Mireia; Balcells Fluvià, Mercè; Canela i Garayoa, Ramon (Elsevier, 2009)Allyl esters can be obtained by a Finkelstein-rearrangement–elimination reaction of 2-chloro-1-(chloromethyl)ethyl esters induced by NaI. Sodium iodide can be used below equivalence using a reductive agent as sodium ... -
Combining AlCl3·6H2O and an ionic liquid to prepare chlorohydrin esters from glycerol
Villorbina Noguera, Gemma; Tomàs, Albert; Escribà i Gelonch, Marc; Oromí Farrús, Mireia; Eras i Joli, Jordi; Balcells Fluvià, Mercè; Canela i Garayoa, Ramon (Elsevier, 2009)We describe here the first example in which glycerol has been transformed into chlorohydrin esters using an ionic liquid and hydrated aluminium chloride. The method avoids using Crown-18 ether, which was needed to obtain ...