1975
DOI: 10.1002/bbpc.19750791206
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Differential thermal analysis under high pressure IV: Low‐temperature DTA of solid‐solid and solid‐liquid transitions of several hydrocarbons up to 3 kbar

Abstract: A DTA apparatus for the temperature range −200°C to +150°C and up to 3000 bar is described. The apparatus is applied to the calorimetric investigation of the phase behaviour of pentane, hexane, heptane, octane, nonane, decane, isopentane, 2,2‐dimethylbutane, 2,3‐dimethylbutane, cyclopentane, cyclohexane, and methylcyclohexane. A new solid phase has been found in cyclohexane at elevated pressures. A strange phase behaviour is observed in 2,3‐dimethylbutane that exhibits endothermic and exothermic transitions. T… Show more

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Cited by 125 publications
(40 citation statements)
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“…The capability of measuring the sample strain simultaneously with temperature and pressure represents a fundamental advantage of our apparatus over the barocaloric setups found in literature. [12][13][14] …”
Section: Methodsmentioning
confidence: 99%
“…The capability of measuring the sample strain simultaneously with temperature and pressure represents a fundamental advantage of our apparatus over the barocaloric setups found in literature. [12][13][14] …”
Section: Methodsmentioning
confidence: 99%
“…The HP-DTA was an in-house constructed apparatus similar to that designed by Würflinger. 8 Samples were sealed in cylindrical tin pans and to ensure that the pans did not contain any residual air, specimens were mixed with an inert perfluorinated liquid (Galden® from Bioblock Scientifics, Illkirch, France) before sealing. HP-DTA scans were carried out with a heating rate of 2 K min -1 .…”
Section: Methodsmentioning
confidence: 99%
“…High-pressure differential thermal analysis (HP-DTA) was carried out with an inhouse constructed HP-DTA similar to the apparatus built by Würflinger 26 operating between 200-473 K and 0-300 MPa. Melting temperatures as a function of a fixed pressure were determined of specimens mixed with an inert perfluorinated liquid (Galden, from Bioblock Scientifics, Illkirch, France) to ascertain that in-pan volumes were free from residual air.…”
Section: Methodsmentioning
confidence: 99%