Thermodynamic Properties of Moldy-Musty Contaminants of Wine
authors Almeida, ARRP; Pinheiro, BDA; Lima, CFRAC; Santos, AFLOM; Ferreira, ACS; Paz, FAA; Monte, MJS
nationality International
journal JOURNAL OF CHEMICAL AND ENGINEERING DATA
keywords HEAT-CAPACITY; OFF-FLAVORS; VAPOR-PRESSURES; CORK; 2,4,6-TRICHLOROANISOLE; THERMOCHEMISTRY; TEMPERATURE; ENTHALPIES; CRYSTAL; IDENTIFICATION
abstract This paper reports thermodynamic properties of phase transitions of 2,4,6-trichloro and 2,4,6-tribromo anisoles and of 2,4,6-tribromophenol. The vapor pressures of both crystalline and liquid phases (including supercooled liquid) of the three compounds were measured, respectively, in the temperature ranges T = (297.1 to 368.3) K, T = (330.7 to 391.7) K, and T = (336.5 to 401.7) K, using a static method based on capacitance diaphragm manometers. Moreover, the sublimation vapor pressures of 2,4,6-tribromophenol were also measured in the temperature interval (307.2 to 329.2) K, using a Knudsen mass-loss effusion technique. The standard molar enthalpies, entropies, and Gibbs energies of sublimation and of vaporization, at reference temperatures, were derived from the experimental results as well as the (p,T) values of the triple point of each compound. The temperatures and molar enthalpies of fusion of the three benzene derivatives were determined using differential scanning calorimetry and were compared with the values derived indirectly from the vapor pressure measurements. The thermodynamic results were discussed together with the available literature data for 2,4,6-trichlorophenol. To help rationalize the phase behavior of these substances, the crystallographic structure of 2,4,6-tribromophenol was determined by single crystal X-ray diffraction.
publisher AMER CHEMICAL SOC
issn 0021-9568
year published 2019
volume 64
issue 11
beginning page 4741
ending page 4753
digital object identifier (doi) 10.1021/acs.jced.9b00062
web of science category Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
subject category Thermodynamics; Chemistry; Engineering
unique article identifier WOS:000497260400015
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 2.196
5 year journal impact factor 2.331
category normalized journal impact factor percentile 58.053
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg