Process for the preparation of 1,3-propanediol by the hydrogenat

Details Process for the preparation of 1,3-propanediol by the hydrogenat Process for the preparation of 1,3-propanediol by the hydrogenat

1992-09-24

1994-11-15

Richter, Johann

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

Organic compounds

Oxygen containing

C07C 3120, C07C 29141, B01J 2342

Patent

active

053649842

ABSTRACT:
Disclosed is a process for the preparation of 1,3-propanediol by the hydrogenation of hydroxypropionaldehyde (HPA) in aqueous solution on a formed carrier catalyst in a solid bed, the concentration of HPA in the solution being from 5 to 100% by weight and hydrogenation being carried out at temperatures of from 30.degree. to 180.degree. C. and hydrogen pressures of from 5 to 300 bar and at a pH of from 2.5 to 6.5. The carrier catalyst is formed principally of titanium oxide on which platinum is applied in a finely divided form in a quantity of from 0.1 to 5.0% by weight, based on the carrier.

REFERENCES:
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patent: 4113660 (1978-09-01), Abe et al.
patent: 4524225 (1985-06-01), Qualeatti et al.
patent: 4929586 (1990-05-01), Hegedus et al.
patent: 4933473 (1990-06-01), Ninomiya et al.
patent: 5015789 (1991-05-01), Arntz et al.
"Highly Dispersed Metallic Oxides Produced by the Aerosil Process", Technical Bulletin Pigments, No. 56, Nov. 1990.

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