A method utilizing supercritical carbon dioxide for impregnating coal with catalytic amounts of molybdenum hexacarbonyl useful for promoting coal dissolution during direct liquefaction is described. Results are presented that describe the solubility and phase behavior of molybdenum hexacarbonyl in supercritical carbon dioxide at 40, 50, and 60 °C. A model based upon the Peng-Robinson equation-of-state was used both to initially predict and subsequently model the observed solubility behavior. Preliminary liquefaction results of Illinois No. 6 coal impregnated with molybdenum hexacarbonyl from supercritical carbon dioxide are also presented.
All Science Journal Classification (ASJC) codes
- General Chemical Engineering
- Condensed Matter Physics
- Physical and Theoretical Chemistry