Selective synthesis of acetic acid from hydrogen and carbon monoxide by homogeneous bimetallic catalysts |
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| Affiliation: | 1. Institute of Chemistry, University of Tartu, 14a Ravila Str., 50411 Tartu, Estonia;2. Soft Matter and Functional Materials, Helmholtz Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany;3. Institute of Physics, University of Tartu, 1 W. Ostwaldi Str., 50411 Tartu, Estonia;4. Institute of Solid State Physics, University of Latvia, Kengaraga 8, 1063 Riga, Latvia |
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| Abstract: | Alcohols which are the main products of the reaction of hydrogen and carbon monoxide in onium halide promoted ruthenium systems, are changed to acetic acid with the addition of cobalt carbonyl as the second catalyst component. Among Group VIa-VIIIa transition metal complexes, cobalt carbonyl is the only compound which promoted acetic acid formation when combined with ruthenium carbonyl under the conditions studied. The selectivity to acetic acid varied appreciably with the combinations of solvents and promoters, and exceeded 80% with optimal catalyst composition. The effects of solvents and promoters were investigated together with 13C tracer experiments from which the roles of halide anions of onium salts were determined. |
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