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International Journal of Industrial Chemistry

, Volume 8, Issue 2, pp 133–144

First Online: 03 April 2017Received: 30 June 2015Accepted: 17 March 2017DOI: 10.1007-s40090-017-0116-1

Cite this article as: Menkiti, M.C., Ocheje, O. & Agu, C.M. Int J Ind Chem 2017 8: 133. doi:10.1007-s40090-017-0116-1

Abstract

Jatropha curcas seed oil was studied for the synthesis of trimethylolpropane based biolube basestock via chemical transesterification of Jatropha methyl ester with trimethylolpropane TMP using calcium hydroxide catalyst. Reactions temperatures ranged between 80 and 160 °C and methyl esters to TMP mole ratios ranged between 3:1 and 7:1. Product analysis, ester groups and physio-chemical properties were obtained by gas chromatography, Fourier transform infrared spectroscopy and American Society for testing and material standard methods, respectively. Gibbs free energy indicated that the reaction was spontaneous with a second order rate constant of 1.00E−01 %wt-wt min C and kinetic energy of 13.57 kJ-mol. Jatropha biolubricant JBL had the following properties: viscosity of 39.45 and 8.51 cSt at 40 and 100 °C, respectively; viscosity index of 204, pour point of −12 °C and flash point of 178 °C. Temperature and mole ratio were the main factors that influenced the reaction. JBL properties complied with ISO VG 32 standard and could be applied as lube basestock with minor modifications.

KeywordsJatropha curcas Biolubricant Transesterification Trimethylolpropane AbbreviationsASTMAmerican Society for testing and material

CJOCrude jatropha oil

DEDiesters

FAMEFatty acid methyl ester

FTIRFourier transform infrared

GCGas chromatography

ISOInternational Standard Organisation

JBLJatropha biolubricant

JMEJatropha methyl ester

JTEJatropha triester

JTMPEJatropha trimethylolpropane esters

MEMonoester

PEPolyol ester

PUFAPolyunsaturated fatty acid

TETriesters

TERTransesterification

TMPTrimethylolpropane

VGViscosity grade

VIViscosity index

Electronic supplementary materialThe online version of this article doi:10.1007-s40090-017-0116-1 contains supplementary material, which is available to authorized users.





Autor: Matthew C. Menkiti - Ocholi Ocheje - Chinedu M. Agu

Fuente: https://link.springer.com/







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