| Autor: |
Frieder Mugele, Roald M. Tiggelaar, Helmut Rathgen, Willem Verboom, Albert van den Berg, D.C. Hermes, Richard J.M. Egberink, David N. Reinhoudt, Han J.G.E. Gardeniers, Fernando Benito-Lopez |
| Přispěvatelé: |
Physics of Complex Fluids, Molecular Nanofabrication, Faculty of Science and Technology, Mesoscale Chemical Systems |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Chemical Engineering Journal, 131(1-3), 163-170. Elsevier |
| ISSN: |
1385-8947 |
| Popis: |
The design, fabrication and high-pressure performance of several in-plane fiber-based interface geometries to microreactor chips for high-pressure chemistry are discussed, and an application is presented. The main investigated design parameters are the geometry of the inlet/outlet structure, the manner in which top and bottom wafer are bonded and the way the inlets/outlets turn over into the microfluidic channels. Destructive pressure experiments with H2O and liquid CO2 showed that the maximum pressure that the proposed inlet/outlet structures can withstand is in the range of 180–690 bar. The optimal geometry for high-pressure microreactor chips is a tubular structure that is etched with hydrofluoric acid (HF) and suitable for fibers with a diameter of 110 μm. These inlets/outlets can withstand pressures up to 690 bar. On the other hand, small powderblasted inlets/outlets that are smoothened with HF and with a sharp transition towards the flow channels are adequate for working pressures up to 300 bar. Microreactor chips with tubular inlet/outlet geometries were used for studying the formation of the carbamic acid of N-benzylmethylamine and CO2. These chips could be used for pressures up to 400 bar without problems/failure, thereby showing that these micromachined microreactor chips are attractive tools for performing high-pressure chemistry in a fast and safe way. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect