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%.
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
H2O
water
3
O2
oxygen
4
C7H6O3
2-hydroxybenzoic acid
5
C8H6O4
1,3-benzodioxole-5-carboxylic acid
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.
Type
Compound-#
Property
Variable
Constraint
Phase
Method
#Points
RXND
4
1
2
3
Specific internal energy of reaction at constant volume, J/g
Micro-bomb calorimetry
1
RXND
5
1
2
3
Specific internal energy of reaction at constant volume, J/g