Preparation of acetaldehyde

Details Preparation of acetaldehyde Preparation of acetaldehyde

1979-10-23

1981-10-06

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568485, 568485, C07C 4549

Patent

active

042937183

ABSTRACT:
Acetaldehyde is prepared by reacting methanol with a mixture comprising hydrogen and carbon monoxide, which mixture comprises at least 25 mol percent hydrogen, in the presence of cobalt, an ionic iodide and a halogen-containing promoter which is different from the ionic iodide. The reaction is best carried out at a temperature of at least 165.degree. C. and with a ratio of gram-ions of I.sup.- originating from the ionic iodide to gram-atoms of cobalt of at least 5 and a ratio of gram-atoms of halogen from the halogen-containing promoter to gram-ions of I.sup.- in the range of about 0.001 to about 0.1

REFERENCES:
patent: 3248432 (1966-04-01), Riley
patent: 3285948 (1966-11-01), Butter
patent: 3356734 (1967-12-01), Kuraishi et al.
patent: 4151208 (1979-04-01), Pretzer et al.

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