Thermal decomposition of illite

AUTOR(ES)

Araújo, José Humberto de, Silva, Nagib Francisco da, Acchar, Wilson, Gomes, Uílame Umbelino

FONTE

Materials Research

DATA DE PUBLICAÇÃO

2004-06

RESUMO

The effect of heat treatment on illite in air at temperatures ranging from 750 to 1150 °C was studied using the Mössbauer effect in 57Fe. The dependence of the Mössbauer parameters and relative percentage of the radiation absorption area was measured as a function of the firing temperature. The onset of thermal structural decomposition occurred at 800 °C. With rising temperature, the formation of hematite (Fe2O3) increased at the expense of the silicate mineral.

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