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Hydrogenation catalyst, preparation method thereof and method for synthesizing 1, 3-propylene glycol

A hydrogenation catalyst and hydrogenation reaction technology, applied in the field of catalytic chemistry, can solve the problems of easy loss of active metals and carriers, high production cost of noble metal catalysis, etc., and achieve the effect of low preparation cost, high conversion rate and selectivity, and simple preparation

Pending Publication Date: 2022-04-26
JIANGSU YANGNONG CHEM GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the problems existing in the prior art, the present invention provides a hydrogenation catalyst and its preparation method and a method for synthesizing 1,3-propanediol. Easy to lose, high production cost of precious metal catalysis

Method used

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  • Hydrogenation catalyst, preparation method thereof and method for synthesizing 1, 3-propylene glycol
  • Hydrogenation catalyst, preparation method thereof and method for synthesizing 1, 3-propylene glycol
  • Hydrogenation catalyst, preparation method thereof and method for synthesizing 1, 3-propylene glycol

Examples

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Embodiment 1

[0069] This embodiment provides a method for preparing a hydrogenation catalyst, the preparation method comprising:

[0070] (1) Mix 2g metallic silver (99.99at.%), 10g metallic aluminum (99.99at.%) and 0.2g metallic nickel (99.99at.%) in a copper crucible, turn on the vacuum pump and start low vacuum until the vacuum degree is low at 2.5×10 -3 After MPa, start to pump high vacuum until the vacuum degree in the electric arc furnace cavity is lower than 6.0×10 -6 After MPa, fill it with argon for melting at a temperature of 1200°C to obtain a master alloy;

[0071] (2) The master alloy is crushed to obtain alloy particles with a particle size of 0.5 to 2 cm. The alloy particles are placed in a quartz tube with a nozzle at the bottom, and then the quartz tube is placed at 2500 r min -1 Heat and melt in the induction current heating ring, adjust the height of the quartz tube so that the nozzle is 0.5mm away from the surface of the copper roller, and the absolute vacuum during t...

Embodiment 2

[0074] This example provides a method for preparing a hydrogenation catalyst, the preparation method except mixing 5g metallic silver (99.99at.%), 10g metallic aluminum (99.99at.%) and 0.05g metallic nickel (99.99at.%) , and the rest are the same as in Example 1 to obtain a hydrogenation catalyst Cat-2.

Embodiment 3

[0076] The present embodiment provides a kind of preparation method of hydrogenation catalyst, described except mixing 4g metallic silver (99.99at.%), 10g metallic aluminum (99.99at.%) and 0.2g metallic iron (99.99at.%), other All were the same as in Example 1 to obtain hydrogenation catalyst Cat-3.

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Abstract

The invention provides a hydrogenation catalyst, a preparation method thereof and a method for synthesizing 1, 3-propylene glycol, and the hydrogenation catalyst comprises a main component and a metal auxiliary agent which are combined in an alloy form, the main body component is silver; the hydrogenation catalyst contains a nanoscale porous structure; the catalyst is high in activity, thorough in hydrogenation reaction, less in aldehyde residue, good in stability, high in mechanical strength and relatively low in preparation cost, and can be well applied to preparation of 1, 3-propylene glycol by catalyzing hydrogenation of 3-HPA.

Description

technical field [0001] The invention relates to the technical field of catalytic chemistry, in particular to a hydrogenation catalyst, a preparation method thereof and a method for synthesizing 1,3-propanediol. Background technique [0002] 1,3-propanediol (1,3-PDO) is an important raw material for the synthesis of new polyester material polytrimethylene terephthalate (PTT), and is also a raw material for the synthesis of plasticizers, detergents, preservatives, and emulsifiers. The PTT fiber prepared by 1,3-PDO not only has the properties of polyethylene terephthalate (PET), but also has good resilience and anti-pollution properties of nylon, and is widely used in carpets, engineering plastics, clothing fabrics and other fields , is currently a hot spot in the development of synthetic fibers in the world. [0003] At present, the preparation methods of 1,3-PDO are mainly the chemical synthesis method using petrochemical products as raw material and the biotransformation me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/66B01J23/89B01J35/10C07C29/141C07C31/20
CPCB01J23/892B01J23/8906B01J23/8913B01J23/8926B01J23/66C07C29/141B01J35/613B01J35/647C07C31/205
Inventor 徐林张西涛戚明甫王怡明丁克鸿
Owner JIANGSU YANGNONG CHEM GROUP