Catalytic effects of alkaline earth carbonates in the carbon-carbon dioxide reaction

✍ Scribed by Douglas W. McKee

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 763 KB
• Volume: 59
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(80)90215-x

✦ Synopsis

The results of a thermogravimetric study of the catalytic effects of alkaline earth carbonates in the C-CO2 reaction are described. Using graphite powder as the carbonaceous phase the rates of the reaction between 700 and 1100°C were found to be substantially increased on addition of small amounts of BaC03 and SrC03 to the graphite. CaC03 was a much less active catalyst. whereas MgC03 had only a slight effect on the kinetics. The catalytic process is interpreted in terms of a solid-state reaction between the salt and the graphite to yield the metal oxide which subsequently regenerates carbonate by reaction with gaseous CO2.