Tighe, CJ;
Gruar, RI;
Ma, CY;
Mahmud, T;
Wang, XZ;
Darr, JA;
(2011)
Investigation of counter-current mixing in a continuous hydrothermal flow reactor.
The Journal of Supercritical Fluids
, 62
165 - 172.
10.1016/j.supflu.2011.11.027.
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Abstract
Temperature profiles have been measured inside a counter-current mixer for the continuous hydrothermal synthesis of inorganic nanoparticles, at conditions (10–25 ml min−1 superheated water, referred to a density of 1 g ml−1, at 350–450 °C and 24.1 MPa, mixed with precursors at 10–20 ml min−1) used in work published by some of the authors and others. The superheated water cooled significantly before meeting the precursors, owing to internal transfer of heat through the wall of the inner tube to the products flowing around it. Consequently, the region immediately after the fluids had fully mixed was at a lower temperature than that determined from an overall heat balance. The flow of superheated water emerging from the inner pipe was characterised using the relevant dimensionless groups (Reynolds, Froude).
| Type: | Article |
|---|---|
| Title: | Investigation of counter-current mixing in a continuous hydrothermal flow reactor |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.supflu.2011.11.027 |
| Publisher version: | http://dx.doi.org/10.1016/j.supflu.2011.11.027 |
| Language: | English |
| Additional information: | This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
| Keywords: | Supercritical water jet, Hydrothermal synthesis, Nanoparticles, Counter-current mixing, Temperature profiles |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1398678 |
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