2 0 2006 cam flo 0 journal Original Camarillo, E. A. Flores, H.[Henoc] J. Chem. Thermodyn. 2006 2020-09-29 Construction, calibration and testing of a micro-combustion calorimeter An isoperibolic micro-combustion calorimeter was designed, built and set up in our laboratory, taking as base a 1107 Parr combustion bomb of 22 cm3 of volume. Taken into account the geometrical form of the bomb, it was designed and constructed a vessel and a submarine chamber in brass. All of the pieces of the calorimeter were chromium-plated to reduce heat loss by radiation. The calorimeter was calibrated by using pellets of standard benzoic acid (mass approximate of 40 mg) leading to the energy equivalent of e(calor) = (1283.8 +- 0.6) J Ae K 1. In order to test the calorimeter, combustion experiments of salicylic acid were performed leading to a value of combustion energy of Dcu = (21,888.8 +- 10.9) J Ae g 1, which agrees with the reported literature values. The combustion of piperonylic acid was carried out as a further test leading to a value of combustion energy of Dcu = (20,215.9 +- 10.4) J Ae g 1 in accordance with the reported literature value. The uncertainty of the calibration and the combustion of salicylic acid and piperonylic acid was 0.05%. Micro-combustion calorimeter Energy equivalent Energy of combustion of salicylic acid Energy of combustion of piperonylic acid 10.1016/j.jct.2006.03.001 11 38 1269-1273 1 InChI=1S/CO2/c2-1-3 CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide CO2 2 InChI=1S/H2O/h1H2 XLYOFNOQVPJJNP-UHFFFAOYSA-N water H2O 3 InChI=1S/O2/c1-2 MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen O2 4 InChI=1S/C7H6O3/c8-6-4-2-1-3-5(6)7(9)10/h1-4,8H,(H,9,10) YGSDEFSMJLZEOE-UHFFFAOYSA-N 2-hydroxybenzoic acid benzoic acid, 2-hydroxy- o-hydroxybenzoic acid phenol-2-carboxylic acid salicylic acid C7H6O3 1 Commercial source 1 Crystallization from solution Dried by vacuum heating Crystallization from solution Dried by vacuum heating 2 99.8 3 DSC 5 InChI=1S/C8H6O4/c9-8(10)5-1-2-6-7(3-5)12-4-11-6/h1-3H,4H2,(H,9,10) VDVJGIYXDVPQLP-UHFFFAOYSA-N 1,3-benzodioxole-5-carboxylic acid 3,4-methylenedioxybenzoic acid benzoic acid, 3,4-(methylenedioxy)- piperonylic acid protocatechuic acid methylen ether C8H6O4 1 Commercial source 1 Crystallization from solution Dried by vacuum heating Crystallization from solution Dried by vacuum heating 2 99.8 3 DSC 1 4 1 -1 Crystal 1 7 Ideal gas 2 3 Liquid 3 -7 Ideal gas Principal objective of the work JCE JCE 10/24/2006 Combustion with oxygen 1 Specific internal energy of reaction at constant volume, J/g Micro-bomb calorimetry 298.15 5 101.3 4 1 Data file compiler Propagation of evaluated standard uncertainties 95 1 -21888 5 1 22 2 5 1 -1 Crystal 1 8 Ideal gas 2 3 Liquid 3 -7.5 Ideal gas Principal objective of the work JCE JCE 10/24/2006 Combustion with oxygen 1 Specific internal energy of reaction at constant volume, J/g Micro-bomb calorimetry 298.15 5 101.3 4 1 Data file compiler Propagation of evaluated standard uncertainties 95 1 -20215.9 6 1 20.6