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Heat Capacities in the Solid and in the Liquid Phase of Isomeric Pentanols

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Chemical Thermodynamics Group, Debye Institute, Utrecht University, Padualaan 8, 3584-CH Utrecht, The Netherlands, and Department of Physical Chemistry, Institute of Chemical Technology, CZ-166 28 Prague 6, Czech Republic
Cite this: J. Chem. Eng. Data 2007, 52, 3, 794–802
Publication Date (Web):March 6, 2007
https://doi.org/10.1021/je060411g
Copyright © 2007 American Chemical Society

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    Abstract

    Isobaric heat capacities in the liquid and in the solid phases of seven isomeric pentanols were measured by adiabatic calorimetry. Results obtained cover the following temperature ranges:  2-methyl-1-butanol from 85 K to 301 K; 2-methyl-2-butanol from 84 K to 301 K; 3-methyl-1-butanol from 79 K to 158 K; 3-methyl-2-butanol from 85 K to 301 K; 2,2-dimethyl-1-propanol from 6 K to 381 K; 2-pentanol from 80 K to 301 K; and 3-pentanol from 5 K to 309 K. The temperature and enthalpy of phase transition were also determined. Solid to solid and solid to liquid phase transitions were detected for 2-methyl-2-butanol and for 2,2-dimethyl-1-propanol, and a solid to liquid phase transition was detected for 3-pentanol. Only a glass to liquid phase transition was detected for all the remaining compounds. The heat capacity data in the liquid phase obtained in this work were merged with available experimental data from the literature and critically assessed, and sets of recommended data were developed by correlating selected data as a function of temperature.

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     Debye Institute, Utrecht University.

     On leave from the Department of Physical Chemistry, Institute of Chemical Technology, CZ-16628 Prague 6, Czech Republic.

    *

     To whom correspondence should be addressed. E-mail:  [email protected]. Fax:  ++420 220 444 333. Phone ++420 220 444 116.

    §

     Institute of Chemical Technology.

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    Experimental heat capacities for all studied compounds are given in Tables 1, 3, 5, 7, 9, 11, and 13 and experimental enthalpy increments are given in Tables 2, 4, 6, 8, 10, 12, and 14 in the Supporting Information. This material is available free of charge via the Internet at http://pubs.acs.org.

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    9. Marzena Dzida. Study of the Effects of Temperature and Pressure on the Thermodynamic and Acoustic Properties of 2-Methyl-1-butanol at Temperatures from 293K to 318K and Pressures up to 100MPa. International Journal of Thermophysics 2010, 31 (1) , 55-69. https://doi.org/10.1007/s10765-009-0607-1
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