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Kinetic Analysis of the Decomposition of Chelates of Di-alkyldithiocarbamate of Cd(II)

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Abstract

The thermal decomposition kinetics of the solid complexes Cd(S2 CNR2 )2 , where R =C2 H5 , n -C3 H7 , n -C4 H9 or iso -C4 H9 , was studied by using isothermal and non-isothermal thermogravimetry. The superimposed TG/DTG/DSC curves revealed that thermal decomposition reactions occur in the liquid phase. The kinetic model that best fitted the experimental isothermal TG data was the one-dimensional phase-boundary reaction-controlled process R1 . The thermal analysis data suggested the thermal stability sequence Cd(S2 CNBun 2 )2 >Cd(S2 CNPrn 2 )2 >Cd(S2 CNBui 2 )2 >Cd(S2 CNEt2 )2 , which accords with the sequence of stability of the apparent activation energies.

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Authors and Affiliations

  1. Departamento de Química, CCEN, Universidade Federal da Paraíba, 58059-900, Joăo Pessoa, Paraíba, Brazil

    A. Gouveia Souza & M. F. Severo Trindade

  2. Departamento de Química, CCT, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brazil

    M. C. Nóbrega Machado

  3. Departamento de Materiais, CCT, Universidade Federal da Paraíba, Campina Grande, Paraíba, Brazil

    L. Helker-Carvalho

Authors
  1. A. Gouveia Souza
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  2. M. C. Nóbrega Machado
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  3. L. Helker-Carvalho
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  4. M. F. Severo Trindade
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Gouveia Souza, A., Nóbrega Machado, M.C., Helker-Carvalho, L. et al. Kinetic Analysis of the Decomposition of Chelates of Di-alkyldithiocarbamate of Cd(II). Journal of Thermal Analysis and Calorimetry 59, 633–642 (2000). https://doi.org/10.1023/A:1010120813517

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  • DOI: https://doi.org/10.1023/A:1010120813517

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