A process for the production of 3-hydroxyalkanals

Details A process for the production of 3-hydroxyalkanals A process for the production of 3-hydroxyalkanals

C - Chemistry, Metallurgy

07

C

C07C 47/263 (2006.01) B01J 21/06 (2006.01) B01J 27/14 (2006.01) C07C 45/64 (2006.01)

Patent

CA 2083864

The invention relates to a process for the production of 3-hydroxyalkanals, more particularly 3-hydroxypropion- aldehyde, by hydration of the corresponding 2-alkenals, more particularly acrolein, in the presence of a(olilcatalyst containing acidic functional groups. The use of catalysts based on an inorganic support containing basic activity centers, which are at least partly occupied by a polybasic acid, of which the first pK s value is between 0 and 3, in a form in which it cannot be removed by water, enables the hydration to be carried out with high selectivity. At the same time, the disadvantages of known organic fixed-bed catalysts are avoided. Preferred catalysts are based on titanium dioxide with phosphoric acid fixed thereon.

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