Hemijski modifikovano ulje biljke Jatrofa curcas za primenu kao biomazivo Naučni rad

Glavni sadržaj članka

Nurazira Mohd Nor
Nadia Salih
Jumat Salimon

Apstrakt

Ulje biljke Jatropha curcas jedan je od zanimljivih obnovljivih izvora za proizvodnju biomaziva. Međutim, direktna primena ovog ulja kao biomaziva je ograničena zbog njegove male oksidativne stabilnosti. Ovaj nedostatak može se prevazići modi­fika­cijom strukture reakcijama epoksidacije, otvaranja prstena i esterifikacije. Epoksidacija ulja izvršena je in situ generisanom permravljom kiselinom, a otvaranje prstena reakcijom sa oleinskom kiselinom u prisustvu p-toluensulfonske kiseline . Potpuna esterifikacija oleinskom kiselinom izvršena je u prisustvu sumporne kiseline. Struktura modifikovanog ulja određena je merenjem sadržaja epoksi kiseonika, infracrvenom spektroskopijom sa Furijeovom transformacijom (engl. Fourier-transform infrared spectroscopy, FTIR) i nuklearno-magnetno-rezonantnom spektroskopijom (1H NMR i 13C NMR). Rezultati su pokazali da su oksidativna stabilnost, viskoznost, tačka paljenja i tačka tečenja krajnjeg proizvoda značajno poboljšani. Konkretno, postupci otvaranja i esterifikacije prstena koji dovode do grananja i savijanja u konačnoj molekulskoj strukturi ulja, doveli su do poboljšanja indeksa viskoznosti na vrednost od 135, tačke tečenja na -29 ° C i povećanja tačke paljenja na 250 ° C..

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Primenjena hemija

Kako citirati

[1]
N. Mohd Nor, N. Salih, and J. Salimon, “Hemijski modifikovano ulje biljke Jatrofa curcas za primenu kao biomazivo: Naučni rad”, Hem Ind, vol. 75, no. 2, pp. 117–128, Apr. 2021, doi: 10.2298/HEMIND200809009N.

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