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Differential Scanning Calorimetric study of the Kaolinite: N-Methylformamide Intercalate

Published online by Cambridge University Press:  01 July 2024

J. M. Adams
J. M. Adams*
Affiliation:
Edward Davies Chemical Laboratories, University College of Wales Aberystwyth, Dyfed, SY23 1NE, Wales
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Abstract

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The thermal decomposition of the kaolinite: N-methylformamide intercalate [Al2Si2O5(OH)4·HCONHCH3] has been studied by differential scanning calorimetry (DSC). The decomposition starts at 355 K, finishes at 450 K and follows Avrami-Erofeev kinetics for α = 0.04–0.96. ΔH for the loss of organic is 19 ± 2 kJ mol−1; the activation energy for the reaction is 30 ± 3 kJ mol−1.

Резюме

Резюме

С помощью термического разложения каолинита изучались прослойки N-метилформамида (Al2Si2O5(OH)4 · HCONHCH3) методом дифференциальной развертывающей калориметрии. Разложение начинается при 355°dgК, заканчивается при 450°К и следует кинетике Аврами-Ерофеева для α =0,04-0,96. ΔH В связи с потерей органики равно 19±2 кдж мол-1. Энергия активации для реакции равна 30±3 кдж мол-1

Kurzreferat

Kurzreferat

Der thermische Zerfall des Kaoliniten: N-methylformamidzwischengelagert (Al2Si2O5(OH)4 HCONHCH3) ist mit Differentialkalorimetrie untersucht worden. Der Zerfall beginnt bei 355 K, endet bei 450 K und folgt Avrami-Erofeev Kinetik für α= 0,04–0,96.Δ H für den Verlust von organischen Material ist 19 ±2KJ Mol−1.Die Aktivierungsenergie für die Reaktion ist 30 ±3KJ Mol−1.

Keywords

IntercalateKaoliniteMethylformamide
Type
Research Article
Information
Clays and Clay Minerals , Volume 26 , Issue 2 , April 1978 , pp. 169 - 172
Copyright
Copyright © 1978, The Clay Minerals Society

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