Conductance studies on sodium silicates
Sodium silicate solutions with silicon dioxide: sodium monoxide mole ratios of 3.41 : 1 and 3.98 : 1 were dried to form gels. Some conductance studies were carried out on the sodium silicate as it dried, and when the dried material was heated up to 160 °C. The results suggest that conduction is main...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
1975
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| Online Access: | http://psasir.upm.edu.my/id/eprint/34048/ http://psasir.upm.edu.my/id/eprint/34048/1/35.%2034048%20%20conductance%20studies%20on%20sodium%20silicates.pdf |
| Summary: | Sodium silicate solutions with silicon dioxide: sodium monoxide mole ratios of 3.41 : 1 and 3.98 : 1 were dried to form gels. Some conductance studies were carried out on the sodium silicate as it dried, and when the dried material was heated up to 160 °C. The results suggest that conduction is mainly due to sodium ions both in the solution and in the gel; to this extent the mechanism of con, duction is similar to that in sodium silicate glasses. However, the gel has a much higher conductance than a glass of similar Na2O : SiO2 ratio, and this is probably because the gel contains hydroxyl ions and hydrated silicate ions, whereas the glass does not; moreover, the gel has a much less tightly packed structure than does the glass. |
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