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Abstract
In isoperibol temperature-rise calorimetry, different approaches can lead to the corrected temperature rise. The description of the methodology, as well as an improvement in the approach to the accurate numerical calculation of the corrected temperature rise in isoperibol calorimetry, based on the comparison between the exponential functional description of the initial and final periods and an independent third order polynomial fitting, is presented. The latter is focused on the strategy of minimizing the result dependency on the definition of the main period of the reaction. Furthermore, the dedicated software application Labtermo is introduced.
complete uncertainty budget for the measurement of the SCV of methane and other hydrocarbons will be published elsewhere. Determination of adiabatic (corrected) temperature rise Notation Table 1
formation of nitric acid corresponding to 1 cm 3 of 0.1000 mol dm −3 sodium hydroxide solution; c /cm 3 , the volume of the consumed 0.1000 mol dm −3 sodium hydroxide solution}; Δ T /K, the corrected temperature rise of the combustion reaction. The
after-period temperatures and the corrected temperature rise was calculated by means of data processing soft-ware in the oxygen bomb calorimeter working station using the Dickinson method, in which Δ T is the ordinate that encloses equal areas above and
. 14. Santos , L , Silva , MT , Schroder , B , Gomes , L 2007 Labtermo: methodologies for the calculation of the corrected temperature rise in isoperibol calorimetry . J Therm Anal Calorim 89 1 175 – 180 10.1007/s10973
