Porous Properties of Silica Prepared by Selective Acid Leaching of Heat-Treated Vermiculite
The porous properties of silica prepared from heat-treated Transvaal vermiculite (South Africa) by acid leaching were determined. The effect of temperature on the destruction of the crystal structure of the vermiculite was determined, leading to the adoption of heating conditions of 600 o C for 2 h...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Izdatel'stvo Sibirskogo Otdeleniya Rossiiskoi Akademii Nauk
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/44264 |
| _version_ | 1848756949663875072 |
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| author | Jadambaa, Temuujin Minjigmaa, A. Jadambaa, T. Tsend-Ayush, S. MacKenzie, K. |
| author_facet | Jadambaa, Temuujin Minjigmaa, A. Jadambaa, T. Tsend-Ayush, S. MacKenzie, K. |
| author_sort | Jadambaa, Temuujin |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The porous properties of silica prepared from heat-treated Transvaal vermiculite (South Africa) by acid leaching were determined. The effect of temperature on the destruction of the crystal structure of the vermiculite was determined, leading to the adoption of heating conditions of 600 o C for 2 h which produce a fully amorphous sample. The heat-treated samples were leached with 2M hydrochloric acid at 80 o C for 0.5, 2 and 8 h and their porous properties were characterized by measuring their specific surface areas and pore volumes. The highest surface area and pore volume (559 m2/g and 0.51 ml/g) was obtained for the sample leached for 8 h. Thermal amorphisation of vermiculite exerts a negative influence on the porous properties of the mineral. |
| first_indexed | 2025-11-14T09:20:20Z |
| format | Journal Article |
| id | curtin-20.500.11937-44264 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:20:20Z |
| publishDate | 2008 |
| publisher | Izdatel'stvo Sibirskogo Otdeleniya Rossiiskoi Akademii Nauk |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-442642017-01-30T15:13:06Z Porous Properties of Silica Prepared by Selective Acid Leaching of Heat-Treated Vermiculite Jadambaa, Temuujin Minjigmaa, A. Jadambaa, T. Tsend-Ayush, S. MacKenzie, K. The porous properties of silica prepared from heat-treated Transvaal vermiculite (South Africa) by acid leaching were determined. The effect of temperature on the destruction of the crystal structure of the vermiculite was determined, leading to the adoption of heating conditions of 600 o C for 2 h which produce a fully amorphous sample. The heat-treated samples were leached with 2M hydrochloric acid at 80 o C for 0.5, 2 and 8 h and their porous properties were characterized by measuring their specific surface areas and pore volumes. The highest surface area and pore volume (559 m2/g and 0.51 ml/g) was obtained for the sample leached for 8 h. Thermal amorphisation of vermiculite exerts a negative influence on the porous properties of the mineral. 2008 Journal Article http://hdl.handle.net/20.500.11937/44264 Izdatel'stvo Sibirskogo Otdeleniya Rossiiskoi Akademii Nauk restricted |
| spellingShingle | Jadambaa, Temuujin Minjigmaa, A. Jadambaa, T. Tsend-Ayush, S. MacKenzie, K. Porous Properties of Silica Prepared by Selective Acid Leaching of Heat-Treated Vermiculite |
| title | Porous Properties of Silica Prepared by Selective Acid Leaching of Heat-Treated Vermiculite |
| title_full | Porous Properties of Silica Prepared by Selective Acid Leaching of Heat-Treated Vermiculite |
| title_fullStr | Porous Properties of Silica Prepared by Selective Acid Leaching of Heat-Treated Vermiculite |
| title_full_unstemmed | Porous Properties of Silica Prepared by Selective Acid Leaching of Heat-Treated Vermiculite |
| title_short | Porous Properties of Silica Prepared by Selective Acid Leaching of Heat-Treated Vermiculite |
| title_sort | porous properties of silica prepared by selective acid leaching of heat-treated vermiculite |
| url | http://hdl.handle.net/20.500.11937/44264 |