20.500.12556/DKUM-52781 Temperature and pressure dependence of volumetric properties for binary mixtures of n-heptane and n-octane The densities of n-heptane, n-octane and their binary mixtures were measured at 298.15, 323.15 and 348.15 K and within the pressure range 0.1 to 40 MPa using a vibrating tube densimeter. The reliability of this technique has been verified in our previous works. The partial molar volumes, excess molar volumes, isothermal compressibilities, isobaric thermal expansivities and internal pressures were calculated from the obtained densities. This study presents the dependence of densities, partial molar volumes, excess molar volumes, isothermal compressibilities, isobaric thermal expansivities and internal pressures on composition, temperature and pressure. S pomočjo gostotomera z nihajočo U-cevko smo izmerili gostote heptana, oktana in njunih binarnih mešanic pri 298,15, 323,15 in 348,15 K ter v območju tlakov od 0,1 do 40 MPa. Zanesljivost te tehnike je bila preverjena v naših prejšnjih delih. Iz dobljenih gostot smo izračunali parcialne molske prostornine, presežne molske prostornine, izotermne stisljivosti, prostorninski razteznostni koeficienti in notranji tlak. Nadalje smo predstavili, kako se gostote, parcialne molske prostornine, presežne molske prostornine, izotermna stisljivost, prostorninski razteznostni koeficient ter notranji tlak spreminjajo s sestavo, temperaturo in tlakom. density measurements partial molar volume excess molar volume isothermal compressibility isobaric thermal expansivity internal pressure n-heptane n-octane meritve gostote parcialne molske prostornine presežne molske prostornine izotermična stisljivost notranji tlak n-heptan n-oktan true false true Angleški jezik Slovenski jezik Znanstveno delo 2015-07-10 18:19:54 2015-07-10 18:19:54 2022-06-01 03:07:27 2021-05-10 03:28:15 2007 0 0 str. 538-544 št. 3 Letn. 54 2007 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1318-0207 541 14086149 11695894 1318-0207 URN:SI:UM:DK:SYYJ4VZG Acta_Chimica_Slovenica_2007_Pecar,_Dolecek_Temperature_and_pressure_dependence_of_volumetric_properties_for_binary_mixtures_of_n-heptane.pdf Acta_Chimica_Slovenica_2007_Pecar,_Dolecek_Temperature_and_pressure_dependence_of_volumetric_properties_for_binary_mixtures_of_n-heptane.pdf 1 DCAEB89BE9E87C53F51F4DB83378CA23 0e934862ca1e13ad7a18db14101fb4c6eb89654a9da6d12400005a85ea1af62e 90add3e4-7c0e-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=116066 http://acta-arhiv.chem-soc.si/54/54-3-538.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=77341 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0