Standard molar enthalpies of formation of 1-and 2-cyanonaphthalene

• Type: Article in International Scientific Journal
• Date: 2011

Authors

da Silva, MAVR (Author) FCUP; Ana I M C L Lobo Ferreira (Author) FCUP; Barros, ALM (Author) Other; Bessa, ARC (Author) Other; Brito, BCSA (Author) Other; Vieira, JAS (Author) Other; Martins, SAP (Author) Other

Journal

Title: Journal of Chemical Thermodynamics

Vol. 43

Pages: 1306-1314

ISSN: 0021-9614

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 1 Citation

Other information

Authenticus ID: P-002-NK0

DOI: 10.1016/j.jct.2011.03.013

Abstract (EN): The standard (p degrees = 0.1 MPa) molar enthalpies of formation, in the crystalline state, of the 1- and 2-cyanonaphthalene were derived from the standard molar energies of combustion, in oxygen, at T = 298.15 K, measured by static-bomb combustion calorimetry. Vapor pressure measurements at different temperatures, using the Knudsen mass loss effusion technique, enabled the determination of the enthalpy, entropy, and Gibbs energy of sublimation, at T = 298.15 K, for both isomers. The standard molar enthalpies of sublimation, at T = 298.15 K. for 1- and 2-cyanonaphthalene, were also measured by high-temperature Calvet microcalorimetry. [GRAPHICS] Combining these two experimental values, the gas-phase standard molar enthalpies. at T = 298.15 K, were derived and compared with those estimated by employing two different methodologies: one based on the Cox scheme and the other one based on G3MP2B3 calculations. The calculated values show a good agreement with the experimental values obtained in this work.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9