Process for the manufacture of acetic acid, acetic aldehyde and

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

1981-10-09

1982-09-28

Mars, Howard T.

Chemistry: fischer-tropsch processes; or purification or recover

Group viii metal containing catalyst utilized for the...

Rhodium containing catalyst

518714, C07C 2706

Patent

active

043519083

ABSTRACT:
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 temperature and pressure. In this process, the temperature is raised in the starting phase, where the catalyst is heated to the working temperature T.sub.R intended for continuous operation, in a range of from T.sub.O to T.sub.R, T.sub.O being 75.degree. to 125.degree. C. below T.sub.R, continuously or in steps of 10.degree. C. at most, in a period of time of from 100 to 1,000 hours; the temperature being raised by 10.degree. C. at most within any 10 hour interval.

REFERENCES:
patent: 4224236 (1980-09-01), Wunder et al.
patent: 4288558 (1981-09-01), Schmidt et al.

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