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Characterization of carbonaceous products by TG and DTA

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Abstract

Thermogravimetry and differential thermal analysis, using only a combustion step with oxygen, were used to characterize carbonaceous products. Binary composition of alumina and wood charcoal, coke, carbon black, petroleum coke or carbon graphite were prepared containing 5 wt% of each. They were characterized by the burnout onset and DTA and DTG peak temperatures, which range from 476°C for wood charcoal to 790°C for carbon graphite.

Complementary characterization of each product was also performed by estimating the ash content from the TG curves, and the calorific value from the DTA curves. The results indicate that these thermal analysis techniques, with only one oxygen burnout step, can be applied both for quality control of each raw material, and to determine the appropriate processing temperatures of the ceramic compositions in which they are used.

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Authors and Affiliations

  1. Pólo de Xistoquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Cidade Universitária, Rio de Janeiro

    R. W. Soares, V. J. Menezes, M. V. A. Fonseca & J. Dweck

  2. Departamento de Processos Inorgânicos, Escola de Química, Universidade Federal do Rio de Janeiro, Cidade Universitária, RJ 21949-900, Rio de Janeiro, Brazil

    J. Dweck

Authors
  1. R. W. Soares
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  2. V. J. Menezes
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  3. M. V. A. Fonseca
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  4. J. Dweck
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Additional information

Funding for this work was provided by the Brazilian PADCT-GTM Project. Participation at the 11th ICTAC was sponsored by Fundação Coordenação de Aperfeiçoamento de Pessoal de Nível Superior — CAPES — and Fundação de Amparo à Pesquisa do Rio de Janeiro — FAPERJ.

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Soares, R.W., Menezes, V.J., Fonseca, M.V.A. et al. Characterization of carbonaceous products by TG and DTA. Journal of Thermal Analysis 49, 657–661 (1997). https://doi.org/10.1007/BF01996748

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  • DOI: https://doi.org/10.1007/BF01996748

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