Process for removing metallic corrosion products from carbonylat

Details Process for removing metallic corrosion products from carbonylat Process for removing metallic corrosion products from carbonylat

1991-10-16

1992-06-23

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Including ion exchanging, except zeolites or product thereof

For regenerating or rehabilitating catalyst or sorbent

502 24, 560232, 562519, 562891, B01J 3874, B01J 3140, C07C 512, C07C 5308

Patent

active

051242907

ABSTRACT:
A process for removing metallic corrosion products from carbonylation reactions which are carried out under anhydrous conditions and in which methyl acetate and/or methanol and/or dimethyl ether are reacted over a noble metal catalyst system which comprises a noble metal of group VIII of the periodic table of the elements, a co-catalyst, such as iodide or bromide, in particular methyl iodide, and a promoter, such as an organophosphonium or organoammonium salt, and if appropriate a lithium salt, to give acetic acid and/or acetic anhydride is described, the process comprising

REFERENCES:
patent: 4007130 (1977-02-01), Leach et al.
patent: 4113754 (1978-09-01), Kummer et al.
patent: 4894477 (1990-01-01), Scates et al.
patent: 4985383 (1991-01-01), Erpenbach et al.

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