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Organic porous copolymer heterogeneous catalyst containing quaternary phosphonium salt-phosphorus ligand and its preparation and application

A heterogeneous catalyst, quaternary phosphonium salt technology, applied in the direction of organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, organic chemistry, etc., can solve the problems of difficult separation and purification of products, and achieve long catalyst life. , the effect of improving utilization efficiency

Active Publication Date: 2020-04-07
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above catalytic system requires the addition of quaternary ammonium salt cocatalysts, resulting in difficulties in product separation and purification.

Method used

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  • Organic porous copolymer heterogeneous catalyst containing quaternary phosphonium salt-phosphorus ligand and its preparation and application
  • Organic porous copolymer heterogeneous catalyst containing quaternary phosphonium salt-phosphorus ligand and its preparation and application
  • Organic porous copolymer heterogeneous catalyst containing quaternary phosphonium salt-phosphorus ligand and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Under 298K and inert gas protection atmosphere, 10.0 grams of Vinyl PPh 3 Monomer (attached figure 1 , L1) was dissolved in 100.0mL tetrahydrofuran solvent, and 2.0g methyl-tris(4-vinylbenzene)phosphonium bromide was added simultaneously, and 1.0 gram of free radical initiator azobisisobutyronitrile was added to the above solution, and stirred for 2 hours . The stirred solution was moved to an autoclave, and polymerized by solvothermal polymerization at 373K and an inert gas atmosphere for 24 hours. After the solution after the above polymerization is cooled to room temperature, the solvent is vacuumed off at room temperature to obtain the 3 An organic porous polymer copolymerized with methyl-tris(4-vinylbenzene)phosphonium bromide monomer. image 3 It is a schematic diagram of the aggregation technology route. Weigh 1 gram of ZnCl 2 Dissolve in 10.0mL of toluene solvent, add 10.0 grams of the organic copolymer prepared above, stir the mixture at 298K and an inert ...

Embodiment 2

[0052] In embodiment 2, in addition to weighing 10.0 grams of comonomer Vinyl Biphephos monomer (attached figure 1 , L2), instead of Vinyl PPh 3 Monomer, all the other catalyst synthesis processes are the same as in Example 1.

Embodiment 3

[0054] In embodiment 3, except taking by weighing 2.0 grams of ethyl-three (4-vinylbenzene) phosphonium bromide monomers, instead of methyl-tris (4-vinylbenzene) phosphonium bromide monomers, the rest of the catalyst synthesis process is the same as Example 1 is the same.

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Abstract

The invention provides a heterogeneous catalyst for an organic porous copolymer containing a quaternary phosphonium salt-phosphorus ligand. The organic porous copolymer containing a quaternary phosphonium salt-phosphorus ligand is composed of an organic phosphine ligand containing an olefin group and an olefin group-containing It is formed by copolymerization of quaternary phosphonium salts. The obtained copolymer is added with or without Lewis acidic metal salts. When Lewis acidic metal salts are added, the metal ions in the metal salts and the exposed ions in the organic porous copolymer containing quaternary phosphonium salt-phosphorus ligands The phosphine forms a coordination bond, and the resulting product is an organic porous copolymer heterogeneous catalyst containing quaternary phosphonium salt-phosphorus ligand. The heterogeneous catalyst provided by the invention is used in the coupling reaction process of epoxy compounds and carbon dioxide, and fully integrates the respective advantages of quaternary phosphonium salts (as ring-opening nucleophiles) and phosphine-metal coordination compounds (activated epoxy compounds). Advantages: By adjusting the comonomer ratio and metal loading, the catalyst obtained can have the dual advantages of extremely high activity and high stability.

Description

technical field [0001] The field of the invention belongs to the field of heterogeneous catalysis, and specifically relates to a heterogeneous catalyst containing a quaternary phosphonium salt-phosphorus ligand organic porous copolymer and its preparation and application, and is specifically applied in the coupling reaction of carbon dioxide and epoxy compounds. Background technique [0002] The design and synthesis of porous organic polymer materials has gradually become one of the new hotspots in the field of porous materials research. Compared with traditional inorganic microporous materials and metal-organic frameworks (MOFs), the framework of organic microporous polymers is composed of pure organic molecules, which are connected to each other by covalent bonds, and have open channels and excellent pore properties. . More importantly, due to the diversity of organic chemical synthesis methods, it provides a wealth of synthetic routes and construction methods for the con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06B01J31/24C07D317/36C07D317/38
Inventor 丁云杰汪文龙李存耀严丽
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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