Experimental study of continuous ultrasonic reactors for mixing and precipitation of nanoparticles
| Autor: | Rashid Jamshidi, Urs A. Peuker, Gunther Brenner, Birte Pohl |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Precipitation (chemistry) Applied Mathematics General Chemical Engineering Analytical chemistry Mixing (process engineering) Nanoparticle General Chemistry Industrial and Manufacturing Engineering Micromixing Transducer Chemical engineering Cavitation Ultrasonic sensor Intensity (heat transfer) |
| Zdroj: | Chemical Engineering Science. 69:365-372 |
| ISSN: | 0009-2509 |
| DOI: | 10.1016/j.ces.2011.10.058 |
| Popis: | Nanoparticles can be synthesized by precipitation. State-of-the-art is the precipitation of nanoparticles in stirred tanks or high-pressure T-mixers. The study presents two new reactor concepts for continuous precipitation of nanoparticles. Both of them utilize ultrasonic sound as a mixing accelerator. The first reactor has a conical chamber (10 mL), which is used to study the micromixing quality, the cavitation intensity and the precipitation of barium sulfate nanoparticles. The second reactor has a so-called cavitational chamber (2.5 mL), which is an optimized conical reactor. Both reactors are compared with each other with respect to the properties of the products. Additionally, the influence of the ultrasonic output from the transducer to the liquid and the feed rate are demonstrated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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