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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 Equilibrium Data in Ionic Liquid+4-Methyldibenzothiophene 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. 49, n. 19, p. 9462-9468, OCT 6 2010.
Citações Web of Science: 3
Resumo

In this work, liquid-liquid equilibrium data for 1-ethyl-3-methylimidazolium diethylphosphate ({[}emiml{[}DEtPO(4)]) or 1-ethyl-3-methylimidazolium ethylsulfate ({[}emim]{[}EtSO(4)]) + 4-methyl-dibenzothiophene (4-MDBT) + n-dodecane systems at 25 and 40 degrees C and atmospheric pressure (approximate to 95 kPa) were determined by refractometry. 4-MDBT is a DBT derivative and it is one of the most difficult diesel sulfur pollutants to remove by the conventional process of hydrodesulfurization. The liquid-liquid equilibrium data were used to study the 4-MDBT extraction from n-dodecane as model diesel oil. 4-MDBT distribution coefficients, solvent selectivities, and extraction data also indicate that {[}emim]{[}DEtPO(4)] is a better solvent for extractive desulfurization of n-dodecane than {[}emim]{[}EtSO(4)]. For a solvent/n-dodecane mass ratio of 0.6, the sulfur content in n-dodecane decreases 17-24% and 5-15% for {[}emim]{[}DEtPO(4)] and {[}emim]{[}EtSO(4)]. respectively. The quality of the data was ascertained by the Hand and Othmer-Tobias correlations, which presented R(2) > 0.97 for all systems. The NRTL model was used to correlate the data and showed root-mean-square deviations of <0.15%. (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