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3-hydroxypropionaldehyde hydrogenation catalyst as well as preparation method and application thereof

A technology of hydroxypropionaldehyde and catalyst, which is applied in the field of new catalysts, can solve the problems of increasing the content of by-product propanol, reducing the difficulty of purifying 1,3-propanediol, and reducing the yield, etc., so as to improve the hydrogenation activity and improve the hydrothermal energy. The effect of stability

Pending Publication Date: 2022-02-08
NINGBO HUANYANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the two-stage hydrogenation process of 3-hydroxypropionaldehyde, due to the poor thermal stability of 3-hydroxypropionaldehyde, the 3-hydroxypropionaldehyde that did not participate in the reaction in the first stage reactor is easily Due to the reverse hydration reaction at high temperature to generate acrolein, the yield of 1,3-propanediol decreases and the content of by-product propanol increases
[0006] 3-Hydroxypropionaldehyde is active, and it is easy to react with 1,3-propanediol at high temperature to form acetal impurities with a boiling point close to that of 1,3-propanediol. The production of this impurity will increase the difficulty of 1,3-propanediol purification and reduce the , the yield of 3-propanediol qualified product

Method used

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  • 3-hydroxypropionaldehyde hydrogenation catalyst as well as preparation method and application thereof
  • 3-hydroxypropionaldehyde hydrogenation catalyst as well as preparation method and application thereof
  • 3-hydroxypropionaldehyde hydrogenation catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Embodiment 1: preparation ruthenium content is the ruthenium-containing powder carrier A of 0.3% by weight

[0096] The implementation steps of this embodiment are as follows:

[0097] A. Preparation of powder carrier

[0098] 10.0 g of pseudo-boehmite was placed in a muffle furnace, calcined at a temperature of 450° C. for 4 hours, and then cooled to room temperature to obtain the powder carrier;

[0099] B. Preparation of ruthenium-containing powder carrier

[0100] Ruthenium trichloride hydrate, competitive adsorbent and water are formulated to contain ruthenium trichloride hydrate with a concentration of 0.32% by weight and a concentration of 0.5% by weight of citric acid competitive adsorbent containing ruthenium. agent solution;

[0101] Then, add the powder carrier obtained in step A to the ruthenium-containing competing adsorbent solution, impregnate an equal volume at room temperature for 2 h, then dry in a drying device for 6 h at a drying temperature of 11...

Embodiment 2

[0104] Embodiment 2: preparation ruthenium content is the ruthenium-containing powder carrier B of 0.3% by weight

[0105] The implementation steps of this embodiment are as follows:

[0106] A. Preparation of powder carrier

[0107] 10.0 g of pseudo-boehmite was placed in a muffle furnace, calcined at a temperature of 450° C. for 4 hours, and then cooled to room temperature to obtain the powder carrier;

[0108] B. Preparation of ruthenium-containing powder carrier

[0109] Ruthenium trichloride hydrate, competitive adsorbent and water are formulated to contain ruthenium trichloride hydrate with a concentration of 0.32% by weight and a concentration of 2.5% by weight of citric acid competitive adsorbent containing ruthenium agent solution;

[0110] Then, add the powder carrier obtained in step A to the ruthenium-containing competing adsorbent solution, impregnate an equal volume at room temperature for 2 h, then dry in a drying device for 6 h at a drying temperature of 110...

Embodiment 3

[0112] Embodiment 3: preparation ruthenium content is the ruthenium-containing powder carrier C of 0.3% by weight

[0113] The implementation steps of this embodiment are as follows:

[0114] A. Preparation of powder carrier

[0115] 10.0 g of pseudo-boehmite was placed in a muffle furnace, calcined at a temperature of 450° C. for 4 hours, and then cooled to room temperature to obtain the powder carrier;

[0116] B. Preparation of ruthenium-containing powder carrier

[0117] Ruthenium trichloride hydrate, competitive adsorbent and water are formulated to contain ruthenium trichloride hydrate with a concentration of 0.32% by weight and a concentration of 5.0% by weight of citric acid competitive adsorbent containing ruthenium. agent solution;

[0118] Then, add the powder carrier obtained in step A to the ruthenium-containing competing adsorbent solution, impregnate an equal volume at room temperature for 2 h, then dry in a drying device for 6 h at a drying temperature of 11...

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Abstract

The invention relates to a catalyst for preparing 1, 3-propylene glycol through hydrogenation of 3-hydroxypropionaldehyde, and the catalyst is composed of a nickel oxide, a ruthenium oxide, a cerium oxide and a carrier. When the catalyst is used in a process for preparing 1, 3-propylene glycol through two-stage hydrogenation of 3-hydroxypropionaldehyde, the conversion rate of 3-hydroxypropionaldehyde is greater than or equal to 99.9%, the whole-process yield from acrolein to 1, 3-propylene glycol is greater than or equal to 78%, and the catalyst can hydrogenate part of oligomer in 3-hydroxypropionaldehyde and convert the oligomer into 1, 3-propylene glycol, so that the selectivity of 1, 3-propylene glycol after two-stage hydrogenation is enabled to be greater than or equal to 100%, and the yield of 1, 3-propylene glycol can be obviously improved in an acrolein hydration hydrogenation route.

Description

【Technical field】 [0001] The invention belongs to the technical field of novel catalysts, and more specifically, the invention relates to a 3-hydroxypropionaldehyde hydrogenation catalyst, and also relates to a preparation method and application of the catalyst. 【Background technique】 [0002] 1,3-propanediol is an important chemical raw material, widely used in medicine, cosmetics, paint, polyester fiber and other fields, especially the PTT polyester fiber prepared by polymerization of 1,3-propanediol and terephthalic acid, because of its special Molecular structure, good resilience and elongation, easy to color, soft and elastic, very suitable for textile and clothing fabrics, and has a broad market prospect. [0003] At present, the routes for preparing 1,3-propanediol by chemical methods mainly include: (1) ethylene oxide is hydroformylated to obtain 3-hydroxypropionaldehyde, and 3-hydroxypropionaldehyde is hydrogenated to obtain 1,3-propanediol; (2) ) Acrolein is hydra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/00B01J37/02C07C29/141C07C31/20
CPCB01J23/898B01J23/894B01J37/0018B01J37/0201C07C29/141C07C31/205Y02P20/584
Inventor 张登儒施社稷林佳佳胡江何聪刘玉泓
Owner NINGBO HUANYANG CHEM