Naslov
Liquid–liquid equilibria for the ternary system ionic liquid [bzmim][Tf2N] – pyridine – hydrocarbon
(Ravnoteža kapljevina–kapljevina trokomponentnog sustava ionska kapljevina [bzmim][Tf2N] – piridin – ugljikovodik)

Autori
Rogošić, Marko ; Kojić, Vedran ; Sander, Aleksandra

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
XXIV. Hrvatski skup kemičara i kemijskih inženjera, Knjiga sažetaka / Ukić, Šime ; Bolanča, Tomislav - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2015, 192-192

ISBN
978-953-6894-54-3

Skup
XXIV. Hrvatski skup kemičara i kemijskih inženjera

Mjesto i datum
Zagreb, Hrvatska, 21.04.2015. - 24.04.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Liquid-liquid equilibria; Ionic liquid [bzmim][Tf2N]; Pyridine

Sažetak
Because of its lower energy requirements, extraction as a method of separation has been the target of much research recently. Due to their physical properties, ionic liquids (IL) have shown application in extracting organic nitrogen and sulfur components from hydrocarbon liquid fuels. In this paper liquid–liquid equilibria in four ternary systems were determined. Ionic liquid used in this experiment was [bzmim][Tf2N] (1-benzyl-3-metylimidazolium bis(trifluorometylsulfonyl)imide). Pyridine was a representative of nitrogen-containing organic components and four hydrocarbons were n-hexane, n-heptane, i-octane and toluene, respectively. The binodal curves were experimentally determined at 25°C and 101325 Pa with turbidimetric titration method, whereby the compositions were determined gravimetrically. Tie-lines were determined by splitting the unstable three- component systems into two phases, and measuring the refractive index of the hydrocarbon-rich phase. The phase compositions were determined using previously prepared calibration curves. IL- rich phase compositions were then determined by mass balance. Experimental tie-line data were described with NRTL and UNIQUAC activity coefficient models, with satisfactory agreement. UNIQUAC model was found to perform slightly better. The results points to potential application of investigated IL in extraction of nitrogen compounds from hydrocarbon (fuel) mixtures.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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