Enhanced Solubility of Oxygen and Carbon Monoxide in CO2-Expanded Liquids

Autor:	Sudhir N. V. K. Aki, Mark A. Stadtherr, Joan F. Brennecke, Zulema K. Lopez-Castillo
Rok vydání:	2006
Předmět:	Chemistry General Chemical Engineering Inorganic chemistry General Chemistry Industrial and Manufacturing Engineering Catalysis Solvent chemistry.chemical_compound Acetone Fugacity Methanol Solubility Acetonitrile Carbon monoxide
Zdroj:	Industrial & Engineering Chemistry Research. 45:5351-5360
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie0601091
Popis:	CO2-expanded liquids are attractive solvent mixtures for many reactions since they have the potential to be designed to dissolve liquid and gaseous reactants, as well as catalysts, can have improved mass transfer compared to traditional liquid-phase reactions, can reduce the amount of volatile organics solvent necessary, and can ameliorate safety concerns. Of primary importance in evaluating CO2-expanded liquids for reactions involving permanent gases is the solubility of those gases in the liquids in the presence of CO2. Here, we report the solubility of O2 and CO in CO2-expanded acetonitrile, acetone, and methanol at temperatures between 25 and 40 °C and pressures to 90 bar. The solubility of O2 and CO in the CO2-expanded liquids is enhanced over the solubility in the absence of CO2 at the same O2 or CO fugacity. However, in no case in the mixed gas system did the O2 or CO solubility substantially exceed what one could achieve with the pure O2 or pure CO at the same total pressure. Thus, the enhancement...
Databáze:	OpenAIRE
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