Dobson, D;
(2021)
The Tungsten Carbide-Carbon Monoxide-Tungsten buffer and its use for synthesising iron-bearing silicates in muffle furnaces.
Review of Scientific Instruments
, 92
, Article 055101. 10.1063/5.0044780.
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Abstract
A new “solid-state” oxygen buffering reaction (WC-COW), WC + 1/2O2 ⇌ CO + W, is presented. At atmospheric pressure, the oxygen fugacity in equilibrium with this buffer is approximated in the range of 600–1200 °C by logfO2=1.53−21008T(K)±0.13bar. A simple method for maintaining oxygen fugacity in standard muffle furnaces using this buffer in off-the-shelf ceramic crucibles is described. The utility of the experimental arrangement in controlling oxygen fugacity during solid-state synthesis of iron-bearing silicates is demonstrated by rapid synthesis of fayalite, Fe2SiO4, from oxide starting mixtures at 1050 °C.
| Type: | Article |
|---|---|
| Title: | The Tungsten Carbide-Carbon Monoxide-Tungsten buffer and its use for synthesising iron-bearing silicates in muffle furnaces |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/5.0044780 |
| Publisher version: | https://doi.org/10.1063/5.0044780 |
| Language: | English |
| Additional information: | Copyright © 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/) |
| 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 Earth Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10125751 |
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