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. 2017 Oct:241:767-774.
doi: 10.1016/j.biortech.2017.06.027. Epub 2017 Jun 8.

Biodiesel synthesis from Calophyllum inophyllum oil with different supercritical fluids

Neha Lamba  1 , Kaveri Gupta  1 , Jayant M Modak  1 , Giridhar Madras  2
Affiliations

Biodiesel synthesis from Calophyllum inophyllum oil with different supercritical fluids

Neha Lamba et al. Bioresour Technol. 2017 Oct.

Abstract

Biodiesel or fatty acid methyl esters (FAMEs) is primarily synthesized using edible vegetable oils and methanol with a catalyst. However, in the present study, FAMEs were synthesized from a non-edible oil (Calophyllum inophyllum also called as sura honne, Punnagam, Alexandrian Laurel) in different supercritical fluids: methanol (MeOH), methyl tert-butyl ether (MTBE), methyl acetate (MeOAc) and dimethyl carbonate (DMC) non-catalytically. Reactions were performed from 523K to 673K at 30MPa with a molar ratio of 40:1 with times varying from 3min to 3h. Conversions higher than 80% were obtained within 30min for oil reaction with MeOH and DMC at 623K and conversions of 60% and 70% were obtained at 673K with MeOAc and MTBE, respectively. Pseudo first order kinetics was used to obtain the rate constants and the activation energies followed the order: EMeOH<EDMC<EMeOAc<EMTBE.

Keywords: Kinetics; Methylating agents; Non-catalytic; Supercritical fluids.

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