Excess molar volumes, speeds of sound, and isentropic compressibilities of binary mixtures of furfural with some aromatic hydrocarbons

Abstract

[Traduit par la revue] Introduction In earlier communications from this laboratory (1-3) we reported the excess molar volumes of binary mixtures of different hydrocarbons with tetrahydrofuran, cyclohexanone, dioxane, etc. A perusal of literature reveals that studies on hydrocarbon-furfural mixtures are scanty. As a part of our investigation, it was, therefore, considered worthwhile to study the mixture behaviour of furfural with some hydrocarbons. In this manuscript, we report the results of our studies on the excess molar volumes and isentropic compressibilities of binary mixtures of furfural with benzene, toluene, ethylbenzene,

Excess molar volumes, speeds of sound, and isentropic compressibilities of binary mixtures of furfural with some aliphatic alcohols

“…The sample of furfural was essentially the one used for our earlier studies (5). The liquids were stored in brown bottles and fractionally distilled irnmediately before use.…”

Volumetric studies on binary mixtures of some furan derivatives with benzene, chlorobenzene, and bromobenzene at 298.15 K

“…The sample of furan (Ferak, Germany) was refluxed over potassium hydroxide and distilled over sodium. Laboratory reagent grade samples of furfural and FA (SRL, India) were distilled under reduced pressure and the middle fractions collected (5,6). The samples of the chlorobenzene and bromobenzene (AG-Fluka) were purified by shaking repeatedly with portions of sulfuric acid until the acid was no longer colored.…”

“…1.15473, 1.12499, 0.87352, 1.10069, and 1.48811 g cmP3, respecOur recent studies on binary mixtures of tetrahydrofuran (1-3), furan (4), furfural (5,6), and furfuryl alcohol (7) with a variety of organic liquids revealed a strong n-IT interaction between the IT-electron cloud of the aromatic ring and the oxygen atom of the heterocyclic ring in tetrahydrofuran (THF) and furan. These interactions were found to be highly influenced by geometric factors and exhibited a significant change on going from furan to furfural to furfuryl alcohol (FA).…”

Excess molar enthalpies for binary liquid mixtures of furfural with some aliphatic alcohols

“…Spectroscopic grade samples of methanol and ethanol supplied by Fluka were used as such without any further purification treatment. The sample of fur- 1.3963 1.3950 (10) fural was essentially the one used in earlier studies (7). The liquids were stored in brown glass bottles and fractionally distilled by use of a column of 15 theoretical plates immediately before use.…”

“…The apparatus and procedures were identical with those described previously (7). Estimated uncertainties in experimental measurements are 0.1 K in temperature and less than 0.002 in mole fraction.…”