Steady-state studies of the reactions of H2O-CO and CO2-H2 mixtures with liquid iron
| Autor: | Yasushi Sasaki, G. R. Belton |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Hydrogen
Inorganic chemistry Metals and Alloys chemistry.chemical_element engineering.material Condensed Matter Physics Sulfur Oxygen chemistry.chemical_compound chemistry Mechanics of Materials Carbon dioxide Materials Chemistry engineering Cast iron Steady state (chemistry) Selenium Carbon monoxide |
| Zdroj: | Metallurgical and Materials Transactions B. 29:829-836 |
| ISSN: | 1543-1916 1073-5615 |
| Popis: | Studies have been made of the steady-stata composition of liquid iron exposed to high flow rates of H2O-CO mixtures at 1550 °C to 1700 °C and CO2-H2 mixtures at 1600 °C. Values of the steady-state activity of oxygen have been established by measurement of either the carbon concentration or the silicon concentration when the iron was held in a silica crucible. Additions of sulfur or selenium to the iron have been found to result in steady-state oxygen activities, which differ significantly from those expected from water-gas equilibrium. The results are interpreted to show that the ratio of the apparent first-order rate constants for the reactions of H2O and CO2 with liquid iron is about 3 at 1600 °C. It is shown that the dependencies of the rate constants on the activities of sulfur, oxygen, and selenium must, even if complex, be similar for the H2O and CO2 reactions with liquid iron, to a good approximation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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