Kinetics and mechanism of the dehydration of ammonium oxalate monohydrate

The dehydration of (NH 4) 2C 2O 4 · H 2O has been studied by isothermal and nonisothermal TG. From the non-isothermal experiments, the best-fitting rate law appears to be A1.5, A3, or D3. Data from isothermal experiments gave the best fit with an R2 rate law. A value of 73 kJ mol −1 was found for th...

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Bibliographic Details
Published in:Thermochimica acta 1993-02, Vol.214 (2), p.255-260
Main Authors: House, J.E., Ralston, Ronald P.
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
Inorganic chemistry and origins of life
Kinetics and mechanism of reactions
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Summary:The dehydration of (NH 4) 2C 2O 4 · H 2O has been studied by isothermal and nonisothermal TG. From the non-isothermal experiments, the best-fitting rate law appears to be A1.5, A3, or D3. Data from isothermal experiments gave the best fit with an R2 rate law. A value of 73 kJ mol −1 was found for the activation energy, and the nature of the variation between runs was explored.
ISSN:0040-6031
1872-762X
DOI:10.1016/0040-6031(93)80063-G