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A kind of catalyst for preparing 3-hydroxypropionaldehyde by hydration of acrolein, its preparation method and application

A technology for hydration of acrolein and hydroxypropionaldehyde, which is applied in the direction of catalyst activation/preparation, molecular sieve catalyst, carbon-based compound preparation, etc. It can solve the problems of poor stability, low selectivity, and low reaction conversion rate, etc., to improve selectivity , the effect of inhibiting side effects

Active Publication Date: 2022-07-01
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current use of molecular sieves as acrolein hydration catalysts still has shortcomings such as low reaction conversion, low selectivity, and poor stability. The catalyst performance needs to be further optimized and improved.

Method used

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  • A kind of catalyst for preparing 3-hydroxypropionaldehyde by hydration of acrolein, its preparation method and application
  • A kind of catalyst for preparing 3-hydroxypropionaldehyde by hydration of acrolein, its preparation method and application
  • A kind of catalyst for preparing 3-hydroxypropionaldehyde by hydration of acrolein, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of embodiment 1 catalyst

[0040] 30g ZSM-5 molecular sieve (SiO 2 / Al 2 O 3 =25) Add 150 ml of 1 M ammonium chloride aqueous solution to carry out ion exchange. After three exchanges, the molecular sieves were filtered, dried at 120°C for 12 hours, and calcined at 500°C for 4 hours. The obtained sample was mixed with 70 g of alumina and 20 g of concentrated nitric acid (concentration of 68%), extruded into strips, and then dried at 120° C. for 12 hours and calcined at 500° C. for 4 hours. After calcination, the strip catalyst was crushed and sieved to obtain granular samples. The prepared granular samples were ion-exchanged in 150 ml of 0.5M aqueous sodium nitrate solution for 30 min, and the ion-exchange temperature was 90°C. Then the sample was filtered, dried at 120°C for 12 hours, and calcined at 500°C for 4 hours to prepare catalyst A.

Embodiment 2

[0041] The preparation of embodiment 2 catalyst

[0042] The metal ion solution used in Example 2 was potassium nitrate solution, other reaction steps and conditions were the same as those in Example 1, and the obtained catalyst was denoted as catalyst B.

Embodiment 3

[0043] The preparation of embodiment 3 catalyst

[0044] The metal ion solution used in Example 3 was magnesium nitrate solution, and other reaction steps and conditions were the same as those in Example 1, and the obtained catalyst was denoted as catalyst C.

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Abstract

The application discloses a catalyst for preparing 3-hydroxypropionaldehyde by hydration of acrolein, a preparation method and application thereof. The catalyst is applied to the reaction of acrolein hydration to prepare 3-hydroxypropionaldehyde, which can effectively suppress the occurrence of side reactions, and improve the selectivity of the target product and the stability of the catalyst.

Description

technical field [0001] The application relates to a method for preparing 3-hydroxypropionaldehyde by hydration of acrolein, and belongs to the field of catalyst materials. Background technique [0002] 1,3-Propanediol is an important chemical raw material, mainly used in the production of polyester, plasticizer, polyurethane and other chemical products. The most important use of 1,3-propylene glycol is to polymerize with terephthalic acid to produce polytrimethylene terephthalate (PTT). PTT is a new type of thermoplastic polyester material with excellent performance, which can be widely used in engineering plastics, textile fibers and carpets. At present, the main production methods of 1,3-propanediol include biological fermentation method, glycerol hydrogenolysis method and acrolein hydration hydrogenation method. Among them, the hydration of acrolein to produce 3-hydroxypropionaldehyde is an important step in the production of 1,3-propanediol by the hydration and hydroge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/40B01J37/30C07C45/64C07C47/19
CPCB01J29/40B01J37/30C07C45/64B01J2229/42B01J2229/18C07C47/19
Inventor 张大治黄声骏金长子丁辉焦雨桐
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI