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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Liquid-Liquid Equilibria for [1-Ethyl-3-methylimidazolium Diethylphosphate or 1-Ethyl-3-methylimidazolium Ethylsulfate]+4,6-Dimethyldibenzothiophene plus Dodecane Systems at 298.2 K and 313.2 K

Texto completo
Autor(es):
de Oliveira, Leonardo Hadlich [1] ; Aznar, Martin [1]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Sch Chem Engn, BR-13083852 Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF CHEMICAL AND ENGINEERING DATA; v. 56, n. 5, p. 2005-2012, MAY 2011.
Citações Web of Science: 3
Resumo

Liquid-liquid equilibrium (LLE) data for [1-ethyl-3-methylimidazolium diethylphosphate ({[}emim]{[}DEtPO(4)]) or 1-ethyl-3-methylimidazolium ethylsulfate ({[}emim]{[}EtSO(4)])] +/- 4,6-dimethyl-dibenzothiophene (4,6-DMDBT) + dodecane systems, at (298.2 and 313.2) K and atmospheric pressure (approximate to 95 kPa), were determined by refractometry. 4,6-DMDBT is one of the most difficult diesel sulfur pollutants to remove by the conventional process of hydrodesulfurization (HDS). Extraction of 4,6-DMDBT from dodecane (used as model diesel oil) was analyzed in terms of solute distribution coefficient, solvent selectivity, and percent of extraction. The results indicate that {[}emim]{[}DEtPO(4)] is a better solvent for extractive desulfurization of dodecane than {[}emim]{[}EtSO(4)]. The Hand and Othmer-Tobias correlations, used to ascertain the quality of the experimental data, presented R(2)> 0.98 for systems with {[}emim]{[}DEtPO(4)] and R(2 >) 0.96 for systems with {[}emim]{[}EtSO(4)]. The nonrandom two-liquid (NRTL) model was used to correlate the LLE data and showed root-mean-square deviations between experimental and calculated mole fractions 0.0002. (AU)

Processo FAPESP: 07/52032-2 - Estudo termodinâmico do equilíbrio líquido-líquido visando a remoção de enxofre do óleo diesel usando líquidos iônicos
Beneficiário:Martin Aznar
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 07/53024-3 - Estudo termodinâmico do equilíbrio líquido-líquido visando a remoção de enxofre do óleo diesel usando líquidos iônicos
Beneficiário:Leonardo Hadlich de Oliveira
Linha de fomento: Bolsas no Brasil - Mestrado