Enthalpies of combustion and formation of 2-acetylpyrrole, 2-acetylfuran and 2-acetylthiophene |
| |
Authors: | Henoc Flores E Adriana Camarillo Juan Mentado |
| |
Institution: | aFacultad de Ciencias Químicas de la Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, C.P. 72570 Puebla Pue, Mexico |
| |
Abstract: | The combustion energies for 2-acetylpyrrole (cr) and 2-acetylfuran (cr) were determined using a static bomb calorimeter, whereas the combustion energy of 2-acetylthiophene (l) was determined with a rotating bomb calorimeter; both calorimeters have been recently described. The molar combustion energies obtained were: −(3196.1 ± 0.6) kJ mol−1 for 2-acetylpyrrole, −(2933.8 ± 0.7) kJ mol−1 for 2-acetylfuran, and −(3690.4 ± 0.8) kJ mol−1 for 2-acetylthiophene. From these combustion energy values, the standard molar enthalpies of formation in the condensate phase were obtained as: −(163.51 ± 0.97) kJ mol−1, −(283.50 ± 1.06) kJ mol−1 and −(123.93 ± 1.15) kJ mol−1, respectively. The obtained values of combustion and formation enthalpies of 2-acetylthiophene are in concordance with the reported previously. For the two last compounds, polyethene bags were used as an auxiliary material in the combustion experiments. The heat capacities and purities of the compounds were determined using a differential scanning calorimeter. |
| |
Keywords: | Rotating-bomb calorimeter Static-bomb calorimeter Combustion energies Formation enthalpies 2-Acetylpyrrole 2-Acetylfuran 2-Acetylthiophene |
本文献已被 ScienceDirect 等数据库收录! |
|