Study of the acoustic and thermodynamic properties of 1,2- and 1,3-propanediol by means of high-pressure speed of sound measurements at temperatures from (293 to 318) K and pressures up to 101 MPa
Journal of Chemical and Engineering Data, ISSN: 0021-9568, Vol: 53, Issue: 1, Page: 136-144
2008
- 63Citations
- 11Captures
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Article Description
The speeds of sound in 1,2- and 1,3-propanediol have been measured in the temperature range from (293 to 318) K at pressures up to 101 MPa by the pulse-echo-overlap method. The densities of the tested propanediol isomers have been measured in the temperature range from (283.15 to 363.15) K under atmospheric pressure with a vibrating tube densimeter. From the experimental results, the densities, isobaric heat capacities, isobaric coefficients of thermal expansion, isentropic and isothermal compressibilities, as well as the internal pressure as a function of temperature and pressure have been calculated. The effects of pressure and temperature on the above quantities are discussed. A new temperature dependence of the heat capacity for 1,3-propanediol is reported too. © 2008 American Chemical Society.
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