Process for the preparation of 1,4-butynediol and related catalyst
AssigneeSocieta Italiana Serie Acetica Sintetica S.p.A.
InventorsFranco Codignola, Giorgio Vergini, Paolo Gronchi, Paolo Centola
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Abstract
The process for the preparation of 1,4-butynediol through the reaction of acetylene with formaldehyde in the presence of a catalytic metal, preferably copper, is improved by using, as the support of the catalytic metal, a molecular sieve or synthetic zeolite to which the catalytic metal is chemically bonded through an ion exchange reaction. There are obtained increased production rates and selectivity and the polymer of acetylene, namely cuprene, is essentially prevented from being formed.
Claims3
A process for the preparation of 1,4-butynediol comprising reacting acetylene and formaldehyde at a temperature between 70.degree. C. and 150.degree. C. and at an acetylene pressure of between 0.5 and 1.5 atmospheres in the presence of a catalyst comprising an acetylide of copper supported on and chemically bonded to a molecular sieve material or a synthetic zeolite through an ion exchange reaction so that the copper atoms and the support form an inorganic, polymeric, crystal lattice in which the copper atoms are positioned at regularly distributed sites.
Dependencies are inferred from the claim text.