Combining biocatalysts to achieve new phase change materials. Application to non-edible animal fat

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Fecha de publicación
2018Autor/a
Martín, Marc
Cita recomendada
Gallart-Sirvent, Pau;
Martín, Marc;
Solé, Aran;
Villorbina Noguera, Gemma;
Balcells Fluvià, Mercè;
Cabeza, Luisa F.;
Canela i Garayoa, Ramon;
.
(2018)
.
Combining biocatalysts to achieve new phase change materials. Application to non-edible animal fat.
Molecular Catalysis, 2018, vol. 444, p. 76-83.
https://doi.org/10.1016/j.mcat.2017.10.037.
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The thermal properties of various alkyl threo-9, 10-dihydroxystearates (DHSEs) prepared from non-edible fat were studied. Non-edible animal fat was hydrolyzed in a 93% yield with R. oryzae resting cells. Crude unsaturated fatty acids were recovered from the matter liquor resulting from a crystallization performed to achieve the saturated fatty acids. These unsaturated free fatty acids were epoxidized with 30% H2O2 using immobilized Candida antarctica Lipase-B (CAL-B) as biocatalyst. The epoxy ring was cleaved with hot water in the presence of tert-butanol (t-BuOH). Pure threo-9, 10-dihydroxystearic acid (DHSA) from animal fat was recovered by crystallization (51% yield). Subsequently, DHSA was esterified in alpha-limonene using biocatalysts yielding twelve DHSEs (58-90% yield). Differential scanning calorimetry (DSC) analysis of these esters revealed potential latent heats ranging from 136.83 kJ kg−1 to 234.22 kJ kg−1 and melting temperatures from 52.45 ◦C to 76.88 ◦C. Finally, the compounds with enthalpies above 200 kJ kg−1 were subjected to 100 and 1000 thermal cycles. These experiments showed that these products present good thermal reliability.
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"Formerly known as Journal of Molecular Catalysis A: Chemical"Es parte de
Molecular Catalysis, 2018, vol. 444, p. 76-83Proyectos de investigación europeos
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