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Open AccessJournal ArticleDOI

A New Method of Analyzing Thermogravimetric Data

Takeo Ozawa
- 01 Nov 1965 - 
- Vol. 38, Iss: 11, pp 1881-1886
TLDR
In this paper, a new method of obtaining the kinetic parameters from thermogravimetric curves has been proposed, which is simple and applicable to reactions which can not be analyzed by other methods.
Abstract
A new method of obtaining the kinetic parameters from thermogravimetric curves has been proposed. The method is simple and applicable to reactions which can not be analyzed by other methods. The effect of the heating rate on thermogravimetric curves has been elucidated, and the master curve of the experimental curves at different heating rates has been derived. The applications of the method to the pyrolyses of calcium oxalate and nylon 6 have been shown ; the results are in good agreement with the reported values. The applicability of the method to other types of thermal analyses has been discussed, and the method of the conversion of the data to other conditions of temperature change has been suggested. From these discussions, the definition of the thermal stability of materials has been criticized.

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Citations
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Journal ArticleDOI

Study of melting and crystallization behavior of polyacrylonitrile using ultrafast differential scanning calorimetry

TL;DR: In this article, the thermal behavior of polyacrylonitrile (PAN) has been investigated using X-ray diffraction, differential scanning calorimetry (DSC), and ultrafast DSC.
Journal ArticleDOI

Kinetics and mechanism of the thermal decomposition of sodium percarbonate: role of the surface product layer.

TL;DR: A relevant reaction model for the thermal decomposition of SPC crystals are discussed by focusing on the role of the surface product layer, Na2CO3, which is expected to have an autocatalytic rate behavior.
Book ChapterDOI

Chapter 13 - Isoconversional Kinetics

TL;DR: Isoconversional methods are an efficient compromise between the common single-step Arrhenius treatment and the predominantly encountered processes whose kinetics are multi-step and/or non-Arrhenian.
Journal ArticleDOI

Deactivation of US-Y zeolite by coke formation during the catalytic pyrolysis of high density polyethylene

TL;DR: In this paper, a relationship between catalytic pyrolysis of waste polymers over zeolitic catalysts has been found to fall exponentially with coke content, indicating that the catalytic activity of zeolite US-Y deactivates due to the deposition of coke.
Journal ArticleDOI

Studies on cracking of jatropha oil.

TL;DR: In this article, the degradation of Jatropha oil was found to occur in three steps, i.e., the main devolatilization of JO occurs in the temperature region 623 −753 −K and the degradation is essentially complete in this zone.
References
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Journal ArticleDOI

Kinetic Parameters from Thermogravimetric Data

A. W. Coats, +1 more
- 01 Jan 1964 - 
TL;DR: In this article, a thermocouple is used to measure the sample temperature in a Stanton HT-D thermobalance, the bead of which is positioned in or near the sample, depending on crucible design.
Journal ArticleDOI

Kinetic analysis of thermogravimetric data

TL;DR: The kinetic analysis of the thermogram, by use of either its exact equation or a more convenient approximation formula, is straightforward in cases of volatilization via simple kinetics as mentioned in this paper.
Journal ArticleDOI

Estimating isothermal life from thermogravimetric data

TL;DR: In this paper, the authors presented a method for estimating equivalent isothermal life from thermogravimetric data and for estimating the apparent activation energy for volatilization even though the nature of the kinetic process is unknown.
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