Experimental thermochemical study of two chlorodinitroaniline isomers

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

Authors

Manuel A V R Ribeiro da Silva (Author) FCUP; Maria D M C R Ribeiro da Silva (Author) FCUP; Ana Filipa L O M Santos (Author) FCUP; Ana I M C L Lobo Ferreira (Author) FCUP; Tiago L P Galvao (Author) Other

Journal

Title: Journal of Chemical Thermodynamics

Vol. 42 No. 10

Pages: 496-501

ISSN: 0021-9614

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 10 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-003-7WD

DOI: 10.1016/j.jct.2009.11.003

Abstract (EN): The standard (p degrees = 0.1 MPa) molar enthalpies of formation of 2-chloro-4,6-dinitroaniline and 4-chloro2,6-dinitroaniline, in the gaseous phase, at T = 298.15 K, were derived from the combination of the values of the standard molar enthalpies of formation, in the crystalline phase, and of the standard molar enthalpies of sublimation, at the same temperature. The standard molar enthalpies of formation, in the crystalline phase, were derived from the standard massic energies of combustion, in oxygen, measured by rotating-bomb combustion calorimetry. The standard molar enthalpies of sublimation were calculated, by the application of the Clausius-Clapeyron equation, to the vapour pressures at several temperatures, measured by Knudsen effusion technique. [GRAPHICS] The values of the standard molar enthalpies of formation of 2-chloro-4,6-dinitroaniline and 4-chloro2,6-dinitroaniline, in the gaseous phase, at T = 298.15 K, are discussed in terms of enthalpic increments, and the enthalpy of isomerization between the two compounds is compared with the same parameter for two isomers of chloronitroaniline, Studied in previous works.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6