Volatilization of antimonite in nitrogen-oxygen atmospheres

Rafael Padilla, Gustavo Ramirez, Alvaro Aracena, María C. Ruiz

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

The vaporization of antimonite (Sb2S3) was investigated in the temperature range of 600-900 °C in a conventional thermogravimetric apparatus. The study was conducted in inert (N2) and oxidizing (N2-O2) atmospheres under various gas flow rates. The results indicated a linear behavior of vaporization of the sample at temperatures above 700 °C. Using the vaporization kinetic constants, activation energy of 124 kJ/mol was determined for the vaporization in nitrogen gas. On the other hand, the weight loss due to volatilization of antimonite in the presence of oxygen occurs up to a certain extent depending on the temperature and partial pressure of oxygen. 20 % of total vaporization occurred at 700 °C while at 900 °C the total vaporization was about 60 %.The incomplete volatilization of antimonite is due to the formation of non-volatile oxides since the weight loss increases with a decrease in partial pressure of oxygen.

Idioma originalInglés
Título de la publicación alojadaTMS 2010 - 139th Annual Meeting and Exhibition - Supplemental Proceedings
Páginas543-550
Número de páginas8
EstadoPublicada - 2010
Publicado de forma externa
EventoTMS 2010 - 139th Annual Meeting and Exhibition - Seattle, WA, Estados Unidos
Duración: 14 feb. 201018 feb. 2010

Serie de la publicación

NombreTMS Annual Meeting
Volumen1

Conferencia

ConferenciaTMS 2010 - 139th Annual Meeting and Exhibition
País/TerritorioEstados Unidos
CiudadSeattle, WA
Período14/02/1018/02/10

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