Use of asymptotic analysis of the large activation-energy limit to compare graphical methods of treating thermogravimetry data

A. Broido; F.A. Williams

doi:10.1016/0040-6031(73)85032-4

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Use of asymptotic analysis of the large activation-energy limit to compare graphical methods of treating thermogravimetry data

Formally Refereed

Authors:

A. Broido, F.A. Williams

Year:

1973

Type:

Scientific Journal

Station:

Pacific Southwest Research Station

DOI:

https://doi.org/10.1016/0040-6031(73)85032-4

Source:

Thermochimica Acta. 6(2): 245-253

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Abstract

An earIier numerical analysis showed that the second approximate method of Horotitz and Metzger can be rendered exceedingly accurate for reduction of thermo-gravimetry data. It is demonstrated here that this result can be justified on the basis of an asymptotic expansion with a nondimensional activation energy as the large parameter. The order of magnitude of the error is ascertained for this and two other approximate methods. Higher-order terms in the approximation are developed.

Citation

Broido, A.; Williams, F.A. 1973. Use of asymptotic analysis of the large activation-energy limit to compare graphical methods of treating thermogravimetry data. Thermochimica Acta. 6(2): 245-253.