Manufacture of a catalyst composition containing zinc and nickel or cobalt
AssigneeBASF SE
InventorsAxel Nissen, Werner Fliege, Dieter Voges
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Abstract
A process for the manufacture of a catalyst capable of causing condensation of aldehydes with ketones or ketones with each other while simultaneously hydrogenating the resulting olefinically unsaturated ketones to saturated ketones in the presence of hydrogen without attacking the ketone group, and containing zinc in addition to nickel or cobalt. The catalyst is subjected, prior to use, to a surface after-treatment with a zinc salt.
Claims8
An improved process for the manufacture of a catalyst essentially containing nickel and/or cobalt and zinc oxide and suitable for the synthesis of ketones by aldol condensation of low molecular weight aldehydes or ketones with low molecular weight ketones and hydrogenation of the intermediate .alpha., .beta.-unsaturated ketones formed at a temperature above about 150.degree. C. in the liquid phase, which process comprises treating a catalyst composition containing a catalytically active amount of zinc oxide and a catalytically active amount of at least one of nickel and cobalt or at least one of a hydrogen-reducible compound of nickel or cobalt at about 50.degree. to 160.degree. C. with a solution or suspension at a concentration of 0.1 to 50% of at least one zinc salt of an aliphatic or aromatic hydrocarbyl carboxylic acid having 2 to 20 carbon atoms.
Dependencies are inferred from the claim text.