ASTM-E2958 2021

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E2958-21 Standard Test Methods for Kinetic Parameters by Factor Jump/Modulated Thermogravimetry

Published By	Publication Date	Number of Pages
ASTM	2021	7

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Categories: 71.040.40 - Chemical analysis, ASTM

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Description

ASTM E2958-21

Active Standard: Standard Test Methods for Kinetic Parameters by Factor Jump/Modulated Thermogravimetry

ASTM E2958

Scope

1.1 These test methods describe the model-free determination of Arrhenius activation energy by thermogravimetry using the factor jump (1)2 (Test Method A) or modulated thermogravimetry (2) (Test Methods B and C) techniques. With the assumption of a first-order kinetic model, the pre-exponential factor is additionally determined.

1.2 These test methods are applicable to materials with well-defined decomposition profiles, namely, a smooth, continuous mass change.

1.3 These test methods are applicable to decomposition occurring in the range from 400 K to 1200 K (nominally 100 °C to 900 °C). The temperature range may be extended depending on the instrumentation and material used.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

activation energy; decomposition; kinetics; pre-exponential factor; thermogravimetric analysis; thermogravimetry;

ICS Code

ICS Number Code 71.040.40 (Chemical analysis)

DOI: 10.1520/E2958-21

Additional information

Standard Title	E2958-21 Standard Test Methods for Kinetic Parameters by Factor Jump/Modulated Thermogravimetry
Published Code	ASTM
Publication Date	2021
Pages Count	7
ICS Codes	71.040.40 - Chemical analysis