Process for the preparation of alcohols in two stages
AssigneeHoechst Aktiengesellschaft
InventorsGerhardt Horn, Carl D. Frohning, Hans Liebern, Wolfgang Zgorzelski
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Abstract
A process for the preparation of alcohols by reaction of organic carbonyl compounds with hydrogen in two stages at elevated temperature and, optionally, elevated pressure. In the first stage, hydrogen and the carbonyl compounds are fed as a gas to a copper-containing catalyst and reacted to 80 to 99.5 percent of the theoretical conversion. In the second stage, the reaction product of the first stage is fed to a nickel/alumina/zirconium dioxide catalyst as a liquid, along with hydrogen. The carbonyl compounds used include aldehydes and their derivatives and, in particular, aliphatic unsaturated and saturated aldehydes.
Claims20
A process for the preparation of alcohols by reaction of organic carbonyl compounds at elevated temperatures, said process comprising:
- feeding said organic carbonyl compounds as a gas to a copper-containing first catalyst in a first stage and reacting said compounds with hydrogen to 80 to 99.5 percent of theoretical to form a reaction product, and
- feeding said reaction product to a nickel/alumina/zirconium dioxide second catalyst on a support, as a liquid, and further reacting said reaction product with hydrogen.
Dependencies are inferred from the claim text.