Navegando por Autor "Pinho, R. D."

Agora exibindo 1 - 1 de 1

Characterization of gypsum using TMDSC
(Springer, 2007-03-07) Dantas, H. F.; Mendes, R. A. S.; Pinho, R. D.; Soledade, Luiz Edmundo Bastos; Paskocimas, Carlos Alberto; Lira, B. B.; Schwartz, M. O. E.; Souza, A. G.; Santos, Ieda Maria Garcia dos
Gypsum is a dihydrated calcium sulfate, with the composition of CaSO4⋅2H2O, with large application interest in ceramic industry, odontology, sulfuric acid production, cement, paints, etc. During calcination, a phase transformation is observed associated to the loss of water, leading to the formation of gypsum or anhydrite, which may present different phases. The identification of the phases is not so easy since their infrared spectra and their X-ray diffraction patterns are quite similar. Thus, in this work, temperature modulated differential scanning calorimetry (TMDSC) was used to identify the different gypsum phases, which can be recognized by their different profiles

SIGAA