Abstract
The flow injection of sodium silicate solution into a large reservoir of lighter cupric sulfate solution creates single, downward growing precipitation tubes. These hollow structures have diameters in the range of 0.82.4 mm and can grow several centimeters in length. Four distinct growth regimes are observed, and their stability in terms of flow rate and cupric sulfate concentration is investigated. Three of these growth regimes resemble behavior reported earlier for the injection of cupric sulfate into silicate solution. However the "reverse" conditions studied here reveal one distinctly different regime in which tube growth is limited by repetitive fracturing. The lengths of the broken-off tube segments and the times between subsequent break-off events can be described by log-normal distributions.
| Original language | English |
|---|---|
| Pages (from-to) | 9324-9329 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry C |
| Volume | 111 |
| Issue number | 26 |
| Early online date | 13 Jun 2007 |
| DOIs | |
| Publication status | Published - 1 Jul 2007 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- General Energy
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films