Molecular energetics of 4-methyldibenzothiophene: An experimental study

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Vera L S Freitas (Author) Other; Jose R B Gomes (Author) Other; Maria D M C R Ribeiro da Silva (Author) FCUP

Journal

Title: Journal of Chemical Thermodynamics

Vol. 42 No. 10

Pages: 251-255

ISSN: 0021-9614

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 20 Citations

Scopus - 19 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-003-9EH

DOI: 10.1016/j.jct.2009.08.010

Abstract (EN): The standard (p degrees = 0.1 MPa) molar enthalpy of formation of 4-methyldibenzothiophene, in the gaseous phase, at T = 298.15 K, was derived from the combination of the values of the standard molar enthalpy of formation, in the crystalline phase, at T = 298.15 K, and the standard molar enthalpy of sublimation, at the same temperature. The standard molar enthalpy of formation in the crystalline phase, determined from the standard massic energy of combustion, in oxygen, is (70.9 +/- 4.8) kJ . mol(-1) and was measured by rotating-bomb combustion calorimetry. From Calvet microcalorimetry measurements, the standard molar enthalpy of sublimation obtained is (90.3 +/- 0.7) kJ . mol(-1).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5