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Scale up production of nanoparticles using hydrothermal synthesis
| Content Provider | Semantic Scholar |
|---|---|
| Author | Blood, Paul A. Lester, Edward Poliakoff, Martyn Tinsley, N. |
| Copyright Year | 2007 |
| Abstract | Supercritical water hydrothermal synthesis of metal oxide nano-particles is a relatively simple and ‘green’ process. However, the technique has not yet achieved wide scale application at an industrial level. Two issues have stood in the way of progress. Firstly, poor mixing in the reactor, which causes blockages; secondly the scalability of the reactor for high volume throughput. Poor control over the mixing of supercritical water with aqueous metal salts will result in poor process reliability and therefore poor product reproducibility. This paper compares various reactor geometries to find an optimal design which avoids particle accumulation during scale up. Three particular phenomena were frequently observed at lower flow rates, namely: fluid partitioning, back mixing and stagnation. Faster flow rates can create other problems during the mixing process which can also prove to be problematic during continuous operation. At high flow rates, the nozzle reactor appeared to be able to mix rapidly and continuously indicating that it has commercial potential for nanoparticle manufacture. |
| Starting Page | 316 |
| Ending Page | 319 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| Volume Number | 4 |
| Alternate Webpage(s) | https://briefs.techconnect.org/wp-content/volumes/Nanotech2007v4/pdf/1371.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
