Excess volumes and partial molar volumes of binary liquid mixtures of furfural or 2–methylfuran with alcohols at 298.15 K
| Autor: | Filipe Hobi Bordon Sosa, L.A. Follegatti–Romero, M. C. G. Costa, L. H. de Oliveira, Denise Trigilio Tavares, L.M. Follegatti–Romero |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Carbon chain
Molar DENSIDADE Analytical chemistry Binary number Partial molar property Alcohol 02 engineering and technology 010402 general chemistry Furfural 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Ftir spectra chemistry.chemical_compound 020401 chemical engineering chemistry 2-Methylfuran General Materials Science 0204 chemical engineering Physical and Theoretical Chemistry |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 0021-9614 |
| Popis: | In this work, densities, excess molar volumes, partial molar volumes and excess partial molar volumes for binary liquid mixtures of furfural and 2–methylfuran with 1–propanol or 2–propanol or 2–butanol or 1–pentanol or 2–pentanol or 1–hexanol at 298.15 K and 0.1 MPa over the entire range of composition were determined. Excess molar volumes were correlated with Redlich–Kister equation with average absolute deviations smaller than 0.0164. Excess molar volumes were negative for furfural + 1–propanol or 2–propanol and positive for all other studied binary systems. Solute partial molar volumes determined increase as alcohol carbon chain length increase, except for furfural + 2–pentanol, which presented smaller values than 2–butanol for molar fractions below 0.2. A maximum/minimum was observed from the excess partial molar volume plots. FTIR spectra data indicate bands at 3135 cm−1, for furfural systems, and 3122 cm−1 for 2–methylfuran systems, are related to the behavior found for excess molar volumes and that H–bonds are smaller for furfural systems than for 2–methylfuran. |
| Databáze: | OpenAIRE |
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