The Nickel and Copper-Catalyzed Hydroformylation of Acetylene with Carbon Monoxide to Acrylic Acid
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Abstract
A non-petroleum approach for the catalytic synthesis of acrylic acid by hydroformylation of acetylene with carbon monoxide has been studied under various conditions. Mixtures of nickel acetate tetrahydrate, cupric bromid, triphenylphosphine and methanesulfonic acid are used as catalysts, and tetrahydrofuran as solvent. The effect of cupric bromid, triphenylphosphine and methanesulfonic acid and water on the conversion of acetylene as well as the selectivity to acrylic acid has been studied. Triphenylphosphine is found to be effient for enhancement of the selectivity under the experimental conditions. When the reaction was carried out under the total initial pressure of 6.0 MPa at the temperature of 200 °C with the catalyst composition of 2.0 mmol Ni(OAc)2 4H2O, 0.9 mmol CuBr2, 2.0 mmol CH3SO3H and 4.0 mmol PPh3, 90% conversion of acetylene and 90% selectivity to acrylic acid were achieved.
Keywords
Non-petroleum synthesis Acrylic acid Nickel acetate tetrahydrate Cupric bromid Triphenylphosphine Methanesulfonic acidNotes
Acknowledgments
This work was supported by the National Key Technology R&D Program of China with project number 2006BAE02B01.
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