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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.)

Phase Equilibria in Ionic Liquids plus Dibenzothiophene plus n-Dodecane Systems

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: Industrial & Engineering Chemistry Research; v. 50, n. 4, p. 2289-2295, FEB 16 2011.
Citações Web of Science: 6
Resumo

In this work, phase equilibrium data for the systems 1-ethyl-3-methylimidazolium diethylphosphate ({[}emim]{[}DEtPO(4)]) or 1-ethyl-3-methylimidazolium ethylsulfate ({[}emim] {[}EtSO(4)]) dibenzothiophene (DBT) + n-dodecane at 25 and 40 degrees C and atmospheric pressure (approximate to 95 kPa) were determined by refractometry. DBT and its derivatives represent the most difficult diesel sulfur pollutants to remove by the conventional process of hydrodesulfurization. These systems present not only liquid-liquid equilibrium (LLE) but also solid-liquid (SLE) and solid-liquid-liquid equilibrium (SLLE) regions. The LLE data were used to analyze the DBT extraction from n-dodecane as model diesel oil. DBT distribution coefficient, solvent selectivities, and extraction data indicate that {[}emim]{[}DEtPO(4)] is a better solvent for extractive desulfurization of n-dodecane than {[}emim] {[}EtSO(4)]. The Hand and Othmer-Tobias correlations present R(2) > 0.97 for all systems. The nonrandom two-liquid model was used to correlate PSI data and shows root-mean-square deviations <0.1%. (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