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Organic porous copolymer heterogeneous catalyst containing quaternary phosphonium salt-phosphorus ligand, and preparation method and application thereof

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 problems such as difficulty in product separation and purification, and achieve high stability , the effect of improving catalytic activity and high activity

Active Publication Date: 2018-01-05
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 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 preparation method and application thereof
  • Organic porous copolymer heterogeneous catalyst containing quaternary phosphonium salt-phosphorus ligand, and preparation method and application thereof
  • Organic porous copolymer heterogeneous catalyst containing quaternary phosphonium salt-phosphorus ligand, and preparation method and application thereof

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 an organic porous copolymer heterogeneous catalyst containing a quaternary phosphonium salt-phosphorus ligand. An organic porous copolymer containing the quaternary phosphoniumsalt-phosphorus ligand is obtained through copolymerizing an alkylene group-containing organic phosphine ligand and an alkylene group-containing quaternary phosphonium salt, a Lewis acid metal salt isadded or is not added to the obtained copolymer, and metal ions in the metal salt and bare phosphine in the organic porous copolymer containing the quaternary phosphonium salt-phosphorus ligand formcoordination bonds during the addition of the Lewis acid metal salt in order to obtain the organic porous copolymer heterogeneous catalyst containing the quaternary phosphonium salt-phosphorus ligand.The heterogeneous catalyst fully integrates the respective advantages of the quaternary phosphonium salt (used as a ring-opening nucleophilic reagent) and a phosphine-metal coordination compound (activated epoxy compounds) when applied to a coupling reaction technology of an epoxy compounds and carbon dioxide, and the proportion of the copolymerization monomer and the metal load are regulated tomake the obtained catalyst have 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 Applications(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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