Fluorene: An extended experimental thermodynamic study |
| |
Authors: | Manuel JS Monte Sónia P Pinto Ana IMC Lobo Ferreira Luísa MPF Amaral Vera LS Freitas Maria DMC Ribeiro da Silva |
| |
Institution: | Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, P-4169-007 Porto, Portugal |
| |
Abstract: | This work reports new experimental thermodynamic results on fluorene. Vapor pressures of both crystalline and liquid phases were measured using a pressure gauge (capacitance diaphragm manometer) and Knudsen effusion methods over a wide temperature range (292.20 to 412.16) K yielding accurate determination of enthalpy and entropy of sublimation and of vaporization. The enthalpy of sublimation was also determined using Calvet microcalorimetry. The enthalpy of fusion was derived from vapor pressure results and from d.s.c. experiments. Static bomb calorimetry was used to determine the enthalpy of combustion of fluorene from which the standard enthalpy of formation in the crystalline phase was calculated. The enthalpy of formation in the gaseous phase was calculated combining the result derived for the crystalline phase with the enthalpy of sublimation. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|