Hello,
I would like to validate my regression algorithm which calculates activation energy and pre-exponential factor from the TGA curve. It uses integral method (the exponential integral for resolving the right side of the equation):
d_alfa/alfa = -A/beta*exp(-E/R*T)dT
where alfa is the extent of mass loss, beta - heating rate, A - pre-exponential factor, E - activation energy.
I compared my results with literature TG curves but, the results differ slightly. I'm wondering if the error is caused by my calculation algorithm or uncertainty of A and E estimation is so high.
Could anyone provide a simple TG curve (one component, first-order order kinetics) and corresponding A, E, and beta - I believe that the data calculated would be the best because I should receive exactly the same A,E result during regression using my algorithm.
Best regards,
Marcin Stec
Set aside your algorithms and calculations for a few minutes and test the following nonlinear regression curves.
You can also estimate the parameters well.
Abolfazl Ghoodjani could you be more specific? You did not mention the software/application name.
Marcin Stec Oh. I thought you know and it is clear from the picture.
This is great and almost simple to do with GraphPad Prism software.
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