Process for the manufacture of acetic acid, acetic aldehyde...

Details Process for the manufacture of acetic acid, acetic aldehyde... Process for the manufacture of acetic acid, acetic aldehyde...

C - Chemistry, Metallurgy

07

C

260/571, 260/528

C07C 31/08 (2006.01) C07C 29/151 (2006.01) C07C 29/158 (2006.01) C07C 45/49 (2006.01) C07C 47/06 (2006.01) C07C 51/10 (2006.01) C07C 53/08 (2006.01)

Patent

CA 1182476

Abstract of the disclosure The invention provides a process for the manufacture of acetic acid, acetic aldehyde and ethanol by reaction in the gaseous phase of carbon monoxide and hydrogen in the presence of catalysts containing rhodium and optionally promoters, at elevated temeperature and pressure. In this process, the temperature is raised in the starting phase, where the catalyst is heated to the working temperature TR intended for continuous operation, in a range of from To to TR, To being 75 to 125°C below TR, continuously or in steps of 10°C at most, in a period of time Or from 100 to 1,000 hours: the temperature being raised by 10°C at most within any 10 hour interval.

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