The catalytic effects of metallic impurities on the reactivity of graphite towards water vapor and hydrogen in the temperature range 25" to 1100°C have been investigated as a function of the oxidation state of the impurity. Iron, cobalt and nickel are active catalysts for the former reaction between
Gasification of graphite in carbon dioxide and water vapor—the catalytic effects of alkali metal salts
✍ Scribed by D.W. McKee
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 766 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0008-6223
No coin nor oath required. For personal study only.
✦ Synopsis
The catalytic effects of a series of alkali metal salts in promoting the gasification of a graphite powder by carbon dioxide and water vapor have been studied by thermogravimetry between 700 and 1100°C. Lithium salts, specifically the carbonate and hydroxide, were the most active catalysts for both reactions. Cyclic processes which may account for the observed catalytic effects were evaluated from the standpoint of thermodynamic feasibility.
📜 SIMILAR VOLUMES
The rates of reaction of a spherical specimen of Speer Moderator-2 graphite with lot< partial pressures of carbon dioxide and water vapor were determined in flowing helium at a totat pressure of 1 atm. The rates were obtained from weight changes of the specimen and from analyses of the effluent gase
The 0' \* isotope has been used in conjunction with a low pressure-low temperature reactor in order to more fully illustrate the mechanism of the carbon-oxygen reaction. The results of this investigation have shown: both carbon monoxide and carbon dioxide are primary products of the reaction, both o