A Raman spectroscopic approach to investigate the production of biodiesel from soybean oil using 1-alkyl-3-methylimidazolium ionic liquids with intermediate chain length - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Accéder directement au contenu
Article Dans Une Revue Applied Energy Année : 2015

A Raman spectroscopic approach to investigate the production of biodiesel from soybean oil using 1-alkyl-3-methylimidazolium ionic liquids with intermediate chain length

Johanna Abrahamsson
  • Fonction : Auteur
Emil Andreasson
  • Fonction : Auteur
Niklas Hansson
  • Fonction : Auteur
David Sandstrom
  • Fonction : Auteur
Ellinor Wennberg
  • Fonction : Auteur
Anna Martinelli
  • Fonction : Auteur

Résumé

We present a Raman spectroscopic study of the conversion of soybean oil into biodiesel by methanol using the lipase B enzyme pseudomonas cepacia as the bio-catalyst and 1-alkyl-3-methylimidazolium ionic liquids (C(n)C(1)Im) as co-solvents, where the alkyl chain length is varied from ethyl (n = 2) to decyl (n = 10). We have limited this study to a low reaction temperature, 40 degrees C, and a low enzyme concentration to investigate the possibility of producing biodiesel with low energy and cost demands. We also demonstrate that Raman spectroscopy is a powerful and straightforward method to estimate the yield of the transesterification reaction, by analysis of the characteristic C=0 stretching mode found in the range similar to 1730-1750 cm(-1). Our results indicate that both reaction yield and reaction rate increase with the chain length, but also that for chains longer than decyl further improvements are marginal. We discuss these results from the viewpoint of local interactions and local structure of the investigated ionic liquids. (C) 2015 Elsevier Ltd. All rights reserved.
Fichier non déposé

Dates et versions

cea-01569850 , version 1 (27-07-2017)

Identifiants

Citer

Johanna Abrahamsson, Emil Andreasson, Niklas Hansson, David Sandstrom, Ellinor Wennberg, et al.. A Raman spectroscopic approach to investigate the production of biodiesel from soybean oil using 1-alkyl-3-methylimidazolium ionic liquids with intermediate chain length. Applied Energy, 2015, 154, pp.763-770. ⟨10.1016/j.apenergy.2015.04.123⟩. ⟨cea-01569850⟩
65 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More