Catalyst for hydrogenating 3-hydroxy propaldehyde to prepare 1, 3-propylene glycol

Abstract

The catalyst for hydrogenating 3-hydroxy propaldehyde to prepare 1, 3-propylene glycol is supported Ni-Mo-X / A catalyst with the molecular sieve, oxide or their mixture as carrier and Ni, Mo and one third metal as the active components. The catalyst is used in the hydrogenating water solution of 3-hydroxy propaldehyde to prepare 1, 3-propylene glycol, and has high activity, high selectivity, mild reaction condition and high stability.

Description

technical field

[0001] The invention relates to a catalyst for preparing 1,3-propanediol through hydrogenation of 3-hydroxy propionaldehyde. Background technique

[0002] The hydrogenation of 3-hydroxypropionaldehyde is an important way to synthesize 1,3-propanediol. 1,3-propanediol is an important chemical raw material, mainly used in the production of polymers, such as poly(1,3-trimethylene terephthalate) (PTT), thermoplastic polyurethane, etc., and a small amount is used as solvent, antifreeze and protection agent etc. PTT molecules have a Z-shaped spring-like structure and unique physical and chemical properties. Therefore, PTT fibers not only have good properties such as softness and easy coloring, but also have good resilience and anti-pollution properties. They are used in carpets, engineering plastics, clothing fabrics and other fields. It has a good application prospect. 3-Hydroxypropionaldehyde can be prepared by hydration of acrolein and hydroformylation of eth...