TY - JOUR
T1 - On the kinetic analysis of DTA curves
AU - Kirsh, Yoram
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1988/10
Y1 - 1988/10
N2 - It is shown that methods of kinetic analysis, which have been developed for DTG, are not directly applicable to DTA. This is because the reaction rate, -dx/dt, is not proportional to the DTA signal ΔT, but rather to ΔT + (C/K)d(ΔT)/dt, where C is the heat capacity of the sample and K is the heat transfer coefficient. Only when the sample is small, the error arising from using these methods for DTA is negligible. This is demonstrated for 'computer DTA curves'. A method for the kinetic analysis of general DTA peaks is suggested.
AB - It is shown that methods of kinetic analysis, which have been developed for DTG, are not directly applicable to DTA. This is because the reaction rate, -dx/dt, is not proportional to the DTA signal ΔT, but rather to ΔT + (C/K)d(ΔT)/dt, where C is the heat capacity of the sample and K is the heat transfer coefficient. Only when the sample is small, the error arising from using these methods for DTA is negligible. This is demonstrated for 'computer DTA curves'. A method for the kinetic analysis of general DTA peaks is suggested.
UR - http://www.scopus.com/inward/record.url?scp=26344470630&partnerID=8YFLogxK
U2 - 10.1016/0040-6031(88)87372-6
DO - 10.1016/0040-6031(88)87372-6
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AN - SCOPUS:26344470630
SN - 0040-6031
VL - 135
SP - 97
EP - 101
JO - Thermochimica Acta
JF - Thermochimica Acta
IS - C
ER -