ChemInform Abstract: Reference Materials for Calorimetry and Differential Thermal Analysis

Sabbah, Raphaël; An, Xin; Chickos, James S.; Leitão, M. Luísa P.; Roux, Marı́a Victoria; Torres, Lizeth

doi:10.1002/chin.199936282

Cited by 22 publications

(45 citation statements)

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“…The calorimeter was verified on the basis of the standard enthalpy of solution of urea and KCl (Calorimetric standard US, NBS) in water at (298.15 ± 0.01) K [43,44] as was described in our recent publication [45]. The value of solution enthalpy in water obtained by us from seven measurements for urea was (15.31 ± 0.06) kJ mol -1 (literature data 15.31 [46], 15.28 [47] and 15.30 kJ mol -1 [48]) and for KCl was (17.55 ± 0.05) kJ mol -1 (literature data 17.58 kJ mol -1 [43,44]). …”

Section: Methodsmentioning

confidence: 99%

Effect of base–acid properties of the mixtures of water with methanol on the solution enthalpy of selected cyclic ethers in this mixture at 298.15 K

Jóźwiak

Warczakowska

2015

J Therm Anal Calorim

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The enthalpies of solution of cyclic ethers: 1,4-dioxane, 12-crown-4 and 18-crown-6 in the mixture of water and methanol have been measured within the whole mole fraction range at T = 298.15 K. Based on the obtained data, the effect of base-acid properties of watermethanol mixtures on the solution enthalpy of cyclic ethers in these mixtures has been analyzed. The solution enthalpy of cyclic ethers depends on acid properties of watermethanol mixtures in the range of high and medium water contents in the mixture. Based on the analysis performed, it can be assumed that in the mixtures of high methanol contents, cyclic ether molecules are preferentially solvated by water molecules.

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Section: Methodsmentioning

confidence: 99%

Effect of base–acid properties of the mixtures of water with methanol on the solution enthalpy of selected cyclic ethers in this mixture at 298.15 K

Jóźwiak

Warczakowska

2015

J Therm Anal Calorim

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“…Besides the substance must have a high degree of purity, the enthalpy of transition must be known precisely and must show no tendency to overheating. Additionally, to calibrate a wide experimental range of temperatures is necessary to use several standard substances [38,39].…”

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

Conceptual approach to thermal analysis and its main applications/Aproximación conceptual al análisis térmico y sus principales aplicaciones

et al. 2017

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This work shows to the reader a general description about the techniques of classic thermal analysis as known as Differential Scanning Calorimetry (DSC), Differential Thermal Analysis (DTA) and Thermal Gravimetric Analysis. These techniques are very used in science and material technologies (metals, metals alloys, ceramics, glass, polymer, plastic and composites) with the purpose of characterizing precursors, following and control of process, adjustment of operation conditions, thermal treatment and verifying of quality parameters.

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“…The instrument was calibrated using heptane (purity >99%) and Al2O3 (Mettler-Toledo thermal analysis standard).The accuracy of the measurements was assessed by measuring naphthalene (purity >99%). Reference data for all three of these compounds were taken from Sabbah et al 31 . Based on the measurements with naphthalene, the standard uncertainty was estimated to be 0.015 J g at the 95% level).…”

Section: Heat Capacity Measurementsmentioning

confidence: 99%

Temperature and pressure dependence of density of a shale oil and derived thermodynamic properties

Baird¹,

Uusi–Kyyny²,

Järvik³

et al. 2017

Preprint

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The temperature and pressure dependence of density was measured experimentally from 293 to 473 K and 0.1 to 12 MPa for a shale oil produced from Kukersite oil shale in Estonia. The shale oil sample was a fuel oil fraction of a whole oil produced in a commercial plant that uses solid heat carrier retorting technology. The fraction had a boiling range of approximately 460 to 780 K and contained significant quantities of polar phenolic compounds (hydroxyl group content of 5.3 wt%). The effect of these compounds on the properties of the oil was investigated by removing most of the phenolic compounds via extraction to create the second sample (dephenolated sample with hydroxyl group content of 1.1 wt%). The dephenolation resulted in a shale oil with a composition being more similar to that of other shale oils from well explored deposits. Based on a review of the literature, this is the first experimental data on the pressure dependence of density for this shale oil, and shale oils generally. Thermal expansion coefficients, isothermal compressibilities and speeds of sound were calculated from the experimental data. Empirical relationships describing the temperature dependence of the heat capacities between 288 and 423 K at atmospheric pressure are also presented here.

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ChemInform Abstract: Reference Materials for Calorimetry and Differential Thermal Analysis

Cited by 22 publications

References 1 publication

Effect of base–acid properties of the mixtures of water with methanol on the solution enthalpy of selected cyclic ethers in this mixture at 298.15 K

Effect of base–acid properties of the mixtures of water with methanol on the solution enthalpy of selected cyclic ethers in this mixture at 298.15 K

Conceptual approach to thermal analysis and its main applications/Aproximación conceptual al análisis térmico y sus principales aplicaciones

Temperature and pressure dependence of density of a shale oil and derived thermodynamic properties

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