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Advisor(s)
Abstract(s)
Relevant chemical separations for the petrochemical
and chemical industries include the removal of aromatic hydrocarbons
from aliphatics, the desulfurization and denitrification of
fuels, and the separation of azeotropic mixtures containing alkanols.
In an attempt to contribute to the development of novel
technologies, the potentialities of imidazolium chloride ionic liquid
(IL) mixtures as separation agents were investigated. Selectivities,
capacities, and solvent performance indices were calculated
through the activity coefficients at infinite dilution of organic
solutes and water in the imidazolium chloride IL: [C8mim]Cl,
[C12mim]Cl, and the equimolar mixture of [C4mim]Cl and
[C12mim]Cl. Results show that the imidazolium chloride IL
might be appropriately tailored for specific purposes, in which an
increase in the proportion of cations containing larger alkyl chains tends to increase the overall affinity with organic solutes. The IL
designer solvent concept was explored by comparing the IL equimolar mixture results with the intermediary [C8mim]Cl. The
COSMO-RS thermodynamic model was also applied, showing it to be a promising tool for a fast qualitative screening of potential
separation agents for specific separation processes.
Description
Keywords
Dilution activity-coefficients Ethanol-water system Infinite dilution Cosmo-RS Organic solutes Extractive distillation N-formylmorpholine Molecular solutes Screening model Sulfur removal
Pedagogical Context
Citation
Gontijo, Guilherme; Rodrigues, Conrado; Ferreira, Débora; Mesquita, L.M.R.; Cruz, Lurdes; Luso, Eduarda (2019). Fire behaviour of ecological soil-cement blocks with waste incorporation. In VI Encontro de Jovens Investigadores do Instituto Politécnico de Bragança. Bragança: IPB
Publisher
American Chemical Society