Experimental thermochemical study of two chlorodinitroaniline isomers

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

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

Revista

Título: Journal of Chemical Thermodynamics

Vol. 42 Nº 10

Páginas: 496-501

ISSN: 0021-9614

Editora: Elsevier

Indexação

ISI Web of Knowledge - 10 Citações

Scopus - 10 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6