Effect of Solution Silicate on the Precipitation of Barium Sulfate
The presence of silicate during barium sulfate crystallization has different impacts depending on the pH of the solution. At pH 7 the dominance of the protonated form (H4SiO4) and possible polymerization of the silicate impacts mainly on the aggregation state and on twinning of the barium sulfate fo...
| Main Authors: | , , |
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| Format: | Journal Article |
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American Chemical Society
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/9111 |
| _version_ | 1848745854709530624 |
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| author | Jones, Franca Radomirovic, Tomoko Ogden, Mark |
| author_facet | Jones, Franca Radomirovic, Tomoko Ogden, Mark |
| author_sort | Jones, Franca |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The presence of silicate during barium sulfate crystallization has different impacts depending on the pH of the solution. At pH 7 the dominance of the protonated form (H4SiO4) and possible polymerization of the silicate impacts mainly on the aggregation state and on twinning of the barium sulfate formed. At higher pH values (10), the silicate ion present is able to influence both morphology and partially substitute for sulfate in the lattice. Interesting fibrous particles are formed under these conditions, but this is not due to mesocrystal formation as the particles are observed to be single crystalline in nature. These fibrous sections are found to be dominant on the surface and are highly porous. These particles are different, however, to the biomorphs formed when crystallization of barium carbonate occurs in the presence of silicate. This is because the speciation of sulfate does not change over a large pH range. The impact of silicate on barium sulfate particles is similar to the impact on calcium carbonate and strontium sulfate crystallization. |
| first_indexed | 2025-11-14T06:23:59Z |
| format | Journal Article |
| id | curtin-20.500.11937-9111 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:23:59Z |
| publishDate | 2012 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-91112017-09-13T16:06:41Z Effect of Solution Silicate on the Precipitation of Barium Sulfate Jones, Franca Radomirovic, Tomoko Ogden, Mark The presence of silicate during barium sulfate crystallization has different impacts depending on the pH of the solution. At pH 7 the dominance of the protonated form (H4SiO4) and possible polymerization of the silicate impacts mainly on the aggregation state and on twinning of the barium sulfate formed. At higher pH values (10), the silicate ion present is able to influence both morphology and partially substitute for sulfate in the lattice. Interesting fibrous particles are formed under these conditions, but this is not due to mesocrystal formation as the particles are observed to be single crystalline in nature. These fibrous sections are found to be dominant on the surface and are highly porous. These particles are different, however, to the biomorphs formed when crystallization of barium carbonate occurs in the presence of silicate. This is because the speciation of sulfate does not change over a large pH range. The impact of silicate on barium sulfate particles is similar to the impact on calcium carbonate and strontium sulfate crystallization. 2012 Journal Article http://hdl.handle.net/20.500.11937/9111 10.1021/cg300263f American Chemical Society restricted |
| spellingShingle | Jones, Franca Radomirovic, Tomoko Ogden, Mark Effect of Solution Silicate on the Precipitation of Barium Sulfate |
| title | Effect of Solution Silicate on the Precipitation of Barium Sulfate |
| title_full | Effect of Solution Silicate on the Precipitation of Barium Sulfate |
| title_fullStr | Effect of Solution Silicate on the Precipitation of Barium Sulfate |
| title_full_unstemmed | Effect of Solution Silicate on the Precipitation of Barium Sulfate |
| title_short | Effect of Solution Silicate on the Precipitation of Barium Sulfate |
| title_sort | effect of solution silicate on the precipitation of barium sulfate |
| url | http://hdl.handle.net/20.500.11937/9111 |