Low pressure catalytic ethynylation process

Details Low pressure catalytic ethynylation process Low pressure catalytic ethynylation process

1977-04-06

1978-10-10

Evans, Joseph E.

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

Organic compounds

Oxygen containing

C07C 2900

Patent

active

041197909

ABSTRACT:
In accordance with the present invention, there is provided herein an improved low pressure, stirred, catalytic process by which butynediol can be produced continuously at a high rate of production, under safe conditions, and without simultaneously forming an excessive amount of undesirable by-products. The process of this invention can be carried out by heating acetylene and formaldehyde, at relatively low temperatures as compared to other processes using supported catalysts, in the presence of a stirred aqueous slurry of a finely-divided complex cuprous acetylide catalyst prepared from a precursor containing greater than 20% and less than 35% by weight of copper, and 0-3%, preferably 2-3%, by weight of bismuth, as the oxides, on a magnesium silicate carrier.

REFERENCES:
patent: 3920759 (1975-11-01), Hort

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