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Synthesis of glycerol 1-monooleate by condensation of oleic acid with glycidol catalyzed by anion-exchange resin in aqueous organic polymorphic system / Zéphirin Mouloungui in Industrial & engineering chemistry research, Vol. 48 N° 15 (Août 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 6949–6956 Titre : Synthesis of glycerol 1-monooleate by condensation of oleic acid with glycidol catalyzed by anion-exchange resin in aqueous organic polymorphic system Type de document : texte imprimé Auteurs : Zéphirin Mouloungui, Auteur ; Vony Rakotondrazafy, Auteur ; Romain Valentin, Auteur Année de publication : 2009 Article en page(s) : pp. 6949–6956 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Technical-grade  oleic  acid  Glycidol  Macroporous  anion-exchange  resin Résumé : The condensation of technical-grade oleic acid (OA) (65%, 85%, and 90% oleic acid) with glycidol (Gly) was carried out in an aqueous medium in the presence of a macroporous anion-exchange resin containing ammonium groups. The reaction was optimized by a unifactorial method and by a 2n−1 fractional factorial plan. The effects of the following main parameters were quantified from experiments based on a 2(5−1) = 24 factorial design: OA/Gly molar ratio, concentration (mmol of OA/mL of H2O), catalytic efficiency (mequiv of X/mmol of OA), and temperature. The conditions were optimized for a discontinuous process in a stirred reactor for selective synthesis of glycerol 1-monooleate (1-GMO) in a polymorphic system (solid resin/emulsion or microemulsion) consisting of OA/Gly/H2O/1-GMO. The catalytic role of the Ambersep 900−X resin was demonstrated by conducting the reaction using the resin in the different functional forms Ambersep 900−OH− and Ambersep 900−HCO3− and in the nonfunctionalized form Ambersep 900−Cl−. The highest yield of 1-GMO (97%) was obtained with the nonfunctionalized form Ambersep 900−Cl− at 70 °C. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900101k [article] Synthesis of glycerol 1-monooleate by condensation of oleic acid with glycidol catalyzed by anion-exchange resin in aqueous organic polymorphic system [texte imprimé] / Zéphirin Mouloungui, Auteur ; Vony Rakotondrazafy, Auteur ; Romain Valentin, Auteur . - 2009 . - pp. 6949–6956. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 6949–6956 Mots-clés : Technical-grade  oleic  acid  Glycidol  Macroporous  anion-exchange  resin Résumé : The condensation of technical-grade oleic acid (OA) (65%, 85%, and 90% oleic acid) with glycidol (Gly) was carried out in an aqueous medium in the presence of a macroporous anion-exchange resin containing ammonium groups. The reaction was optimized by a unifactorial method and by a 2n−1 fractional factorial plan. The effects of the following main parameters were quantified from experiments based on a 2(5−1) = 24 factorial design: OA/Gly molar ratio, concentration (mmol of OA/mL of H2O), catalytic efficiency (mequiv of X/mmol of OA), and temperature. The conditions were optimized for a discontinuous process in a stirred reactor for selective synthesis of glycerol 1-monooleate (1-GMO) in a polymorphic system (solid resin/emulsion or microemulsion) consisting of OA/Gly/H2O/1-GMO. The catalytic role of the Ambersep 900−X resin was demonstrated by conducting the reaction using the resin in the different functional forms Ambersep 900−OH− and Ambersep 900−HCO3− and in the nonfunctionalized form Ambersep 900−Cl−. The highest yield of 1-GMO (97%) was obtained with the nonfunctionalized form Ambersep 900−Cl− at 70 °C. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900101k