Síntesis de ceolitas a partir de arcillas caolínicas
- Autores
- Marfil, Silvina Andrea; Maiza, Pedro
- Año de publicación
- 1992
- Idioma
- español castellano
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Sinthesis experiments have been carried out in order to obtain zeolites form kaolinics clays. The method consisted in a treatment of kaolins (either naturals or thermically treatest at 600 and 1000 °C), with sodium and potassium hidroxide at 80°C. The reaction products were studied by XRD. After 32 days with a NaOH solution 1 N, the natural and both heated kaolinites gave Zh zeolite (ASTM 16-612) as reaction product. Besides, with the former it was also obtain a ZK zeolite (ASTM 18-1198) and with the 600°C heated kaolinite a Na-A zeolite (ASTM 11-590). In a second stage the sinthesized zeolites were treated with a KOH solution 1 N for 32 days. Only the zeolite formed from natural kaolinite reacted giving a zeolite phase N. With the KOH 1 N solution the 1000 °C heated kaolinite rerained unchange and the 600°C heated one gave a zeolite phase N. The natural kaolinite changed first (32 days) to a potassium chabacite (ASTM 12-194) and later (75 days) to a sodalite phase N (ASTM 23-1313). In the second stage, with the NaOH 1 N solution only K-chabacite obtained from the natural kaolinite changed to a Na sodalite (ASTM 20-1070). Others remained unchange.
Aznar et al. (1985), sintetizaron ceolitas A y X a partir de caolines previamente calcinados (activados térmicamente) a 600 °C, tratados con hidróxidos alcalinos a 100°C. Con las muestras naturales obtuvieron sólo un feldespatoide hidratado (hidrosodalita). En el presente trabajo se realizaron experiencias a 80°C con caolinitas tanto naturales como tratadas térmicamente a 600°C y a 1000°C, con soluciones 1 N de NaOH y KOH, lográndose en todos los casos, la cristalización de diferentes tipos de ceolitas. Se informa sobre los resultados de ensayos tendientes a establecer la posibilidad de obtener artificialmente ceolitas de diferentes tipos a partir de materiales arcillosos caolínicos de baja calidad, por ejemplo, de los minerales de baja alúmina y elevado hierro y titanio que se deshechan en las explotaciones mineras. Además se demostró que es posible controlar el tipo de ceolita forrada, cambiar su composición y reactivarlas luego de determinado uso. - Materia
- Geología
- Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
- OAI Identificador
- oai:digital.cic.gba.gob.ar:11746/4805
Ver los metadatos del registro completo
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Síntesis de ceolitas a partir de arcillas caolínicasMarfil, Silvina AndreaMaiza, PedroGeologíaSinthesis experiments have been carried out in order to obtain zeolites form kaolinics clays. The method consisted in a treatment of kaolins (either naturals or thermically treatest at 600 and 1000 °C), with sodium and potassium hidroxide at 80°C. The reaction products were studied by XRD. After 32 days with a NaOH solution 1 N, the natural and both heated kaolinites gave Zh zeolite (ASTM 16-612) as reaction product. Besides, with the former it was also obtain a ZK zeolite (ASTM 18-1198) and with the 600°C heated kaolinite a Na-A zeolite (ASTM 11-590). In a second stage the sinthesized zeolites were treated with a KOH solution 1 N for 32 days. Only the zeolite formed from natural kaolinite reacted giving a zeolite phase N. With the KOH 1 N solution the 1000 °C heated kaolinite rerained unchange and the 600°C heated one gave a zeolite phase N. The natural kaolinite changed first (32 days) to a potassium chabacite (ASTM 12-194) and later (75 days) to a sodalite phase N (ASTM 23-1313). In the second stage, with the NaOH 1 N solution only K-chabacite obtained from the natural kaolinite changed to a Na sodalite (ASTM 20-1070). Others remained unchange.Aznar et al. (1985), sintetizaron ceolitas A y X a partir de caolines previamente calcinados (activados térmicamente) a 600 °C, tratados con hidróxidos alcalinos a 100°C. Con las muestras naturales obtuvieron sólo un feldespatoide hidratado (hidrosodalita). En el presente trabajo se realizaron experiencias a 80°C con caolinitas tanto naturales como tratadas térmicamente a 600°C y a 1000°C, con soluciones 1 N de NaOH y KOH, lográndose en todos los casos, la cristalización de diferentes tipos de ceolitas. Se informa sobre los resultados de ensayos tendientes a establecer la posibilidad de obtener artificialmente ceolitas de diferentes tipos a partir de materiales arcillosos caolínicos de baja calidad, por ejemplo, de los minerales de baja alúmina y elevado hierro y titanio que se deshechan en las explotaciones mineras. Además se demostró que es posible controlar el tipo de ceolita forrada, cambiar su composición y reactivarlas luego de determinado uso.1992info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/4805spainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-29T13:39:59Zoai:digital.cic.gba.gob.ar:11746/4805Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-29 13:39:59.722CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse |
dc.title.none.fl_str_mv |
Síntesis de ceolitas a partir de arcillas caolínicas |
title |
Síntesis de ceolitas a partir de arcillas caolínicas |
spellingShingle |
Síntesis de ceolitas a partir de arcillas caolínicas Marfil, Silvina Andrea Geología |
title_short |
Síntesis de ceolitas a partir de arcillas caolínicas |
title_full |
Síntesis de ceolitas a partir de arcillas caolínicas |
title_fullStr |
Síntesis de ceolitas a partir de arcillas caolínicas |
title_full_unstemmed |
Síntesis de ceolitas a partir de arcillas caolínicas |
title_sort |
Síntesis de ceolitas a partir de arcillas caolínicas |
dc.creator.none.fl_str_mv |
Marfil, Silvina Andrea Maiza, Pedro |
author |
Marfil, Silvina Andrea |
author_facet |
Marfil, Silvina Andrea Maiza, Pedro |
author_role |
author |
author2 |
Maiza, Pedro |
author2_role |
author |
dc.subject.none.fl_str_mv |
Geología |
topic |
Geología |
dc.description.none.fl_txt_mv |
Sinthesis experiments have been carried out in order to obtain zeolites form kaolinics clays. The method consisted in a treatment of kaolins (either naturals or thermically treatest at 600 and 1000 °C), with sodium and potassium hidroxide at 80°C. The reaction products were studied by XRD. After 32 days with a NaOH solution 1 N, the natural and both heated kaolinites gave Zh zeolite (ASTM 16-612) as reaction product. Besides, with the former it was also obtain a ZK zeolite (ASTM 18-1198) and with the 600°C heated kaolinite a Na-A zeolite (ASTM 11-590). In a second stage the sinthesized zeolites were treated with a KOH solution 1 N for 32 days. Only the zeolite formed from natural kaolinite reacted giving a zeolite phase N. With the KOH 1 N solution the 1000 °C heated kaolinite rerained unchange and the 600°C heated one gave a zeolite phase N. The natural kaolinite changed first (32 days) to a potassium chabacite (ASTM 12-194) and later (75 days) to a sodalite phase N (ASTM 23-1313). In the second stage, with the NaOH 1 N solution only K-chabacite obtained from the natural kaolinite changed to a Na sodalite (ASTM 20-1070). Others remained unchange. Aznar et al. (1985), sintetizaron ceolitas A y X a partir de caolines previamente calcinados (activados térmicamente) a 600 °C, tratados con hidróxidos alcalinos a 100°C. Con las muestras naturales obtuvieron sólo un feldespatoide hidratado (hidrosodalita). En el presente trabajo se realizaron experiencias a 80°C con caolinitas tanto naturales como tratadas térmicamente a 600°C y a 1000°C, con soluciones 1 N de NaOH y KOH, lográndose en todos los casos, la cristalización de diferentes tipos de ceolitas. Se informa sobre los resultados de ensayos tendientes a establecer la posibilidad de obtener artificialmente ceolitas de diferentes tipos a partir de materiales arcillosos caolínicos de baja calidad, por ejemplo, de los minerales de baja alúmina y elevado hierro y titanio que se deshechan en las explotaciones mineras. Además se demostró que es posible controlar el tipo de ceolita forrada, cambiar su composición y reactivarlas luego de determinado uso. |
description |
Sinthesis experiments have been carried out in order to obtain zeolites form kaolinics clays. The method consisted in a treatment of kaolins (either naturals or thermically treatest at 600 and 1000 °C), with sodium and potassium hidroxide at 80°C. The reaction products were studied by XRD. After 32 days with a NaOH solution 1 N, the natural and both heated kaolinites gave Zh zeolite (ASTM 16-612) as reaction product. Besides, with the former it was also obtain a ZK zeolite (ASTM 18-1198) and with the 600°C heated kaolinite a Na-A zeolite (ASTM 11-590). In a second stage the sinthesized zeolites were treated with a KOH solution 1 N for 32 days. Only the zeolite formed from natural kaolinite reacted giving a zeolite phase N. With the KOH 1 N solution the 1000 °C heated kaolinite rerained unchange and the 600°C heated one gave a zeolite phase N. The natural kaolinite changed first (32 days) to a potassium chabacite (ASTM 12-194) and later (75 days) to a sodalite phase N (ASTM 23-1313). In the second stage, with the NaOH 1 N solution only K-chabacite obtained from the natural kaolinite changed to a Na sodalite (ASTM 20-1070). Others remained unchange. |
publishDate |
1992 |
dc.date.none.fl_str_mv |
1992 |
dc.type.none.fl_str_mv |
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