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Relation among the Aggregation of Boehmite Particles in Sols, Microstructure of Gels, nod Crystallization of Corundum
Holková, Z., Pach, L., Lath, D. and Krištín, J. Relation among the Aggregation of Boehmite Particles in Sols, Microstructure of Gels, nod Crystallization of Corundum Chemical Papers, Vol.58, No. 3, 2004, 149-154
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n583a149.pdf
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583a149.pdf |
application/pdf |
822.82KB |
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| Author(s) |
Holková, Z.
Pach, L.
Lath, D.
Krištín, J.
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| Title |
Relation among the Aggregation of Boehmite Particles in Sols, Microstructure of Gels, nod Crystallization of Corundum
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| Journal name |
Chemical Papers
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| Publication date |
2004
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| Year available |
2004
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| Volume number |
58
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| Issue number |
3
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| ISSN |
0366-6352
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| Start page |
149
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| End page |
154
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2004
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| Language |
english
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| Subject |
250000 Chemical Sciences
250200 Inorganic Chemistry
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| Abstract/Summary |
Aggregation of boehmite particles in sole was studied by dynamic light scattering and corresponding gels were examined by DTA, XRD, BET, SEM, and TEM. Commercial Condea boehmite particles of the size 3-5 nm aggregated in sols into fibres. An aggregation and desegregation was a reversible process. Fibres were disintegrated during drying, but the repulsive forces between particles oriented them into characteristic microstructures. These microstructures were less dependent on the composition of sots. Similarly, nucleation density of α-Al2O3 increased slightly (from N = 6.1 × 108 to 3.1 × 109 cm-3) with the content of boehmite in sols from 10.0 and 14.7 mass %, respectively.
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