Engenharia Química
URI permanente desta comunidadehttps://repositorio.fei.edu.br/handle/FEI/25
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2 resultados
Resultados da Pesquisa
- Volumetric properties of binary mixtures of acetonitrile and alcohols at different temperatures and atmospheric pressure(2007) Torres R.B.; Francesconi A.Z.; Volpe P.L.O.In this work, densities and excess molar volume data of binary mixtures of acetonitrile + methanol, or + ethanol, or + 1-propanol, or + 1-butanol as a function of composition, under atmospheric pressure and at 288.15, 293.15, 298.15 and 303.15 K have been used to calculate partial molar volumes (V-i), excess partial molar volumes (V-iE) and apparent molar volumes (Vφ{symbol}i) of each component. The partial molar volumes at infinite dilution (V-i∞) have been determined using three different methods. © 2006 Elsevier B.V. All rights reserved.
- Volumetric properties of binary mixtures of dichloromethane and amines at several temperatures and p = 0.1 MPa(2008) Torres R.B.; Hoga H.E.In this work densities of binary mixtures of {dichloromethane (DCM) + n-butylamine (n-BA), or + s-butylamine (s-BA), or + t-butylamine (t-BA), or diethylamine (DEA), or + triethylamine (TEA)}, have been determined under atmospheric pressure as a function of composition and temperature using a vibrating-tube densimeter. The temperatures studied were T = 288.15, 293.15, 298.15 and 303.15 K. The excess molar volumes (VmE), calculated from density data, are negative for the (DCM + t-BA, or + DEA, or + TEA) mixtures and present a sigmoid curve for the (dichloromethane + n-BA, or + s-BA) mixtures. The partial molar volumes at infinite dilution of each component (V{combining overline}i∞) have been determined using three different methods. © 2008 Elsevier B.V. All rights reserved.