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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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Preparation of hydrophilic and acid-proof silicalite-1 zeolite membrane and its application to selective separation of water from water solutions of concentrated acetic acid by pervaporation

TL;DR: In this article, a hydrophilic and acid-proof silicalite-1 zeolite membrane was successfully prepared by repeating hydrothermal synthesis of a layer on an alumina ceramic filter followed by a liquid phase oxidation method with H2O2 to remove template molecules.
Journal ArticleDOI

Mechanism and kinetic modelling of PEEK pyrolysis by TG/MS

TL;DR: In this article, a new technique combining Py-GC/MS with TG/MS can be used in analyzing the mechanism and kinetic modelling of pyrolysis, and the results of this study show that a combined approach of py-GC+MS and TG+MS exhibited dynamic curves of 13 evolved gases from the pyrolynsis of PEEK from room temperature to 900°C.
Journal ArticleDOI

Effects of low-temperature curing on physical behavior of cold-curing epoxy adhesives in bridge construction

TL;DR: In this paper, the effect of low-temperature curing on the physical characteristics of a commercial cold-curing epoxy adhesive was experimentally and analytically investigated with a view to a potential application in bridge construction in winter.
Journal ArticleDOI

A generalized form of the Kissinger equation

TL;DR: In this paper, an equation is deduced from the differential thermogravimetry curves and an attempt is made to obtain the peak maxima information theoretically from the DTM curves.
Journal ArticleDOI

The thermal dehydration of synthetic gypsum

TL;DR: In this paper, the main dehydration of the calcium sulphate dehydrate part of synthetic gypsum occurs between 95 and 170°C (heating rate 5°C min−1) and seems to proceed via a process with an activation energy of 392 ± 100 kJ mol−1 for α-values between 0 and 0.1.
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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