Process for the hydrocarbonylation of methanol to ethanol in...

Details Process for the hydrocarbonylation of methanol to ethanol in... Process for the hydrocarbonylation of methanol to ethanol in...

C - Chemistry, Metallurgy

07

C

260/639

C07C 31/08 (2006.01) C07C 29/32 (2006.01) C07C 51/12 (2006.01)

Patent

CA 1105492

Case No 4516 ABSTRACT PROCESS FOR THE HYDROCARBONYLATION OF METHANOL TO ETHANOL IN THE PRESENCE OF ADDED OXYGEN-CONTAINING ORGANIC COMPOUNDS Ethanol is produced by reacting methanol with carbon monoxide and hydrogen at temperatures in the range 150 to 250°C and pressures greater than 100 bar in the presence of a cobalt catalyst and an additive which is miscible with methanol containing up to 20% w/w water, which additive is an alcohol, an aldehyde, a ketone or an ether. Particular additives are n-propanol, n-butanol, acetone, acetaldehyde, 1,4-dioxane, tetrahydrofuran, di-n-propylether and diphenyl ether. Optionally the catalyst is promoted with iodine or bromine or preferably both iodine or bromine and an organo- phosphorus compound. Other additives such as non-polar solvents, acids and derivatives thereof and inert liquids can be incorporated in the reaction mixture.

321035

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