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dc.creatorMaria D M C R Ribeiro da Silva
dc.creatorGoncalves, MV
dc.creatorManuel J S Monte
dc.description.abstractReported in the present work are the values of the gaseous standard (p degrees = 0.1 MPa) molar enthalpies of formation of 3-hydroxybenzaldehyde (3HBA), 4-hydroxybenzaldehyde (4HBA), and 3,5-di-tert-butyl-2-hydroxybenzaldehyde (3,5DTBHBA), at T = 298.15 K. For the three compounds, the values were derived from measurements of the standard molar energies of combustion of the crystalline compounds, using a static bomb calorimeter {Delta(c)H degrees m(3HBA) = -(3298.3 +/- 1.3) kJ . mol(-1) . Delta(c)H degrees(m)(4HBA) = -(3291.8 +/- 0.9) kJ . mol(-1) . Delta(c)H degrees(m)(3, 5DTBHBA) = -(8502.6 +/- 2.9) kJ . mol(-1)}, together with the standard molar enthalpies of sublimation, at T = 298.15 K, derived from the vapour pressures measured at different temperatures using the Knudsen effusion technique {Delta(g)(cr)H degrees m(3HBA) = (100.1 +/- 0.6) kJ . mol(-1) . Delta (g)(cr)H degrees(m)(4HBA) = (102.5 +/- 0.5) kJ . mol(-1), Delta(g)(cr)H degrees(m)(3, 5DTBHBA) = (96.0 +/- 0.5) kJ . mol(-1)}
dc.subjectQuímica física, Engenharia química
dc.subjectPhysical chemistry, Chemical engineering
dc.titleThermodynamic study on hydroxybenzaldehyde derivatives: 3-and 4-Hydroxybenzaldehyde isomers and 3,5-di-tert-butyl-2-hydroxybenzaldehyde
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Ciências
dc.subject.fosCiências da engenharia e tecnologias::Engenharia química
dc.subject.fosEngineering and technology::Chemical engineering
Appears in Collections:FCUP - Artigo em Revista Científica Internacional

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