Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o
A kaoliniterich raw material was treated hydrothermally with 1.33 and 3.99M KOH solutions at 100 and 175 °C during different reaction times ranging from 24 to 528 h. The synthesis products were characterized by Xray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy,...
- Autores:
-
Ríos Reyes, Carlos Alberto
Denver Williams, Craig
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2010
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/37584
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/37584
http://bdigital.unal.edu.co/27668/
- Palabra clave:
- Kaolinite
potassium hydroxide
zeolites
dissolution
precipitation
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
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Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Ríos Reyes, Carlos Albertoeca95664-2302-46e7-adc7-e47168e5f6e8300Denver Williams, Craig8a6db9c0-4cc1-4e4b-8459-8ff0de69814d3002019-06-28T01:51:02Z2019-06-28T01:51:02Z2010https://repositorio.unal.edu.co/handle/unal/37584http://bdigital.unal.edu.co/27668/A kaoliniterich raw material was treated hydrothermally with 1.33 and 3.99M KOH solutions at 100 and 175 °C during different reaction times ranging from 24 to 528 h. The synthesis products were characterized by Xray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, magic angle spinning nuclear magnetic resonance and thermogravimetric analysis in order to elucidate their physicochemical and mineralogical characteristics. The transformation of the starting material in KOH solutions can be explained by two different processes: (1) dissolution and (2) precipitation. A series of crystalline phases summarized by the reaction sequence kaolinite → chabazite → edingtonite → unidentified potassium aluminosilicate phase → kalsilite + leucite was identified in the system K₂OSiO₂Al₂O₃H₂O. The solid products show, on the other hand, remarkable textural and structural differences with the starting material.application/pdfspaUniversidad Nacional de Colombia Sede Medellínhttp://revistas.unal.edu.co/index.php/dyna/article/view/25537Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaDyna; Vol. 77, núm. 163 (2010); 55-63 DYNA; Vol. 77, núm. 163 (2010); 55-63 2346-2183 0012-7353Ríos Reyes, Carlos Alberto and Denver Williams, Craig (2010) Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o. Dyna; Vol. 77, núm. 163 (2010); 55-63 DYNA; Vol. 77, núm. 163 (2010); 55-63 2346-2183 0012-7353 .Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂oArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTKaolinitepotassium hydroxidezeolitesdissolutionprecipitationORIGINAL25537-89759-1-PB.pdfapplication/pdf909766https://repositorio.unal.edu.co/bitstream/unal/37584/1/25537-89759-1-PB.pdfee5f8310b8cbace8e7bfeea458eb0c85MD51THUMBNAIL25537-89759-1-PB.pdf.jpg25537-89759-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg8900https://repositorio.unal.edu.co/bitstream/unal/37584/2/25537-89759-1-PB.pdf.jpgdb3ef4b6df2431a070294d83c13533f2MD52unal/37584oai:repositorio.unal.edu.co:unal/375842024-01-11 23:06:13.934Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co |
| dc.title.spa.fl_str_mv |
Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o |
| title |
Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o |
| spellingShingle |
Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o Kaolinite potassium hydroxide zeolites dissolution precipitation |
| title_short |
Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o |
| title_full |
Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o |
| title_fullStr |
Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o |
| title_full_unstemmed |
Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o |
| title_sort |
Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o |
| dc.creator.fl_str_mv |
Ríos Reyes, Carlos Alberto Denver Williams, Craig |
| dc.contributor.author.spa.fl_str_mv |
Ríos Reyes, Carlos Alberto Denver Williams, Craig |
| dc.subject.proposal.spa.fl_str_mv |
Kaolinite potassium hydroxide zeolites dissolution precipitation |
| topic |
Kaolinite potassium hydroxide zeolites dissolution precipitation |
| description |
A kaoliniterich raw material was treated hydrothermally with 1.33 and 3.99M KOH solutions at 100 and 175 °C during different reaction times ranging from 24 to 528 h. The synthesis products were characterized by Xray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, magic angle spinning nuclear magnetic resonance and thermogravimetric analysis in order to elucidate their physicochemical and mineralogical characteristics. The transformation of the starting material in KOH solutions can be explained by two different processes: (1) dissolution and (2) precipitation. A series of crystalline phases summarized by the reaction sequence kaolinite → chabazite → edingtonite → unidentified potassium aluminosilicate phase → kalsilite + leucite was identified in the system K₂OSiO₂Al₂O₃H₂O. The solid products show, on the other hand, remarkable textural and structural differences with the starting material. |
| publishDate |
2010 |
| dc.date.issued.spa.fl_str_mv |
2010 |
| dc.date.accessioned.spa.fl_str_mv |
2019-06-28T01:51:02Z |
| dc.date.available.spa.fl_str_mv |
2019-06-28T01:51:02Z |
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Artículo de revista |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
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info:eu-repo/semantics/article |
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info:eu-repo/semantics/publishedVersion |
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http://purl.org/coar/resource_type/c_6501 |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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Text |
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http://purl.org/redcol/resource_type/ART |
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http://purl.org/coar/resource_type/c_6501 |
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publishedVersion |
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https://repositorio.unal.edu.co/handle/unal/37584 |
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http://bdigital.unal.edu.co/27668/ |
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https://repositorio.unal.edu.co/handle/unal/37584 http://bdigital.unal.edu.co/27668/ |
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spa |
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spa |
| dc.relation.spa.fl_str_mv |
http://revistas.unal.edu.co/index.php/dyna/article/view/25537 |
| dc.relation.ispartof.spa.fl_str_mv |
Universidad Nacional de Colombia Revistas electrónicas UN Dyna Dyna |
| dc.relation.ispartofseries.none.fl_str_mv |
Dyna; Vol. 77, núm. 163 (2010); 55-63 DYNA; Vol. 77, núm. 163 (2010); 55-63 2346-2183 0012-7353 |
| dc.relation.references.spa.fl_str_mv |
Ríos Reyes, Carlos Alberto and Denver Williams, Craig (2010) Hydrothermal transformation of kaolinite in the system k₂osio₂al₂o₃h₂o. Dyna; Vol. 77, núm. 163 (2010); 55-63 DYNA; Vol. 77, núm. 163 (2010); 55-63 2346-2183 0012-7353 . |
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Derechos reservados - Universidad Nacional de Colombia |
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http://purl.org/coar/access_right/c_abf2 |
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Atribución-NoComercial 4.0 Internacional |
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http://creativecommons.org/licenses/by-nc/4.0/ |
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info:eu-repo/semantics/openAccess |
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Atribución-NoComercial 4.0 Internacional Derechos reservados - Universidad Nacional de Colombia http://creativecommons.org/licenses/by-nc/4.0/ http://purl.org/coar/access_right/c_abf2 |
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Universidad Nacional de Colombia Sede Medellín |
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Universidad Nacional de Colombia |
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