Thermodynamic Study on the Sublimation of Anthracene-Like Compounds

Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/93368

Author(s):	Manuel J S Monte Sousa, CAD Fonseca, JMS Luis M N B F Santos
Title:	Thermodynamic Study on the Sublimation of Anthracene-Like Compounds
Issue Date:	2010
Abstract:	A Knudsen mass-loss effusion technique was used for measuring the vapor pressures at different temperatures of the following crystalline compounds: anthraquinone (CAS No. 84-65-1), between (377.06 and 395.03) K; anthrone (CAS No. 90-44-8), between (346.15 and 365.14) K; thianthrene (CAS No. 92-85-3), between (344.27 and 264.06) K; thioxanthone (CAS No. 492-22-8), between (369.12 and 387.20) K; and xanthone (CAS No. 90-47-1), between (342.22 and 362.22) K. From the temperature dependence of the vapor pressure of each crystalline compound, the standard (p degrees = 10(5) Pa) molar enthalpies and Gibbs energies of sublimation, at T = 298.15 K, were derived. The measured thermodynamic properties are compared with literature results for similar compounds, and correlations for estimation of the vapor pressures and enthalpy of sublimation for anthracene-like compounds are presented.
Subject:	Química física, Engenharia química Physical chemistry, Chemical engineering
Scientific areas:	Ciências da engenharia e tecnologias::Engenharia química Engineering and technology::Chemical engineering
DOI:	10.1021/je100850z
URI:	https://hdl.handle.net/10216/93368
Document Type:	Artigo em Revista Científica Internacional
Rights:	restrictedAccess
Appears in Collections:	FCUP - Artigo em Revista Científica Internacional

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