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Quaternary phosphonium salt organic polymer catalyst, and preparation method and applications thereof

A quaternary phosphonium salt and polymer technology is applied to a quaternary phosphonium salt organic polymer catalyst and its application field in the production of cyclic carbonate, and achieves the effects of easy diffusion, hard loss, and easy recycling.

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

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Problems solved by technology

However, the catalyst activity needs to be further improved

Method used

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  • Quaternary phosphonium salt organic polymer catalyst, and preparation method and applications thereof
  • Quaternary phosphonium salt organic polymer catalyst, and preparation method and applications thereof
  • Quaternary phosphonium salt organic polymer catalyst, and preparation method and applications thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Under 298K and inert gas protection atmosphere, 10.0 grams of Vinyl PILC 2 Br monomer (with figure 1 , n=1, X=Br) was dissolved in 100.0ml tetrahydrofuran solvent, while adding 2.5g crosslinking agent tris (4-vinylphenyl) phosphine (L1), adding 1.0 gram of free radical initiator couple to the above solution Azodiisobutyronitrile, 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, and the solution obtained by Vinyl PILC 2 An organic polymer support for copolymerization of Br and tris(4-vinylphenyl)phosphine organic monomers. attached figure 2 For Vinyl PILC 2 Schematic diagram of the Br organic mixed polymer carrier polymerization technology route. Weigh 70 mg of ZnBr 2 Dissolve in 10.0ml tetrahydrofuran solvent, add 1.0 g...

Embodiment 2

[0058] In embodiment 2, except taking by weighing 10.0 grams of crosslinking agent tris (4-vinylphenyl) phosphine (L1), instead of 2.5 grams of crosslinking agent tris (4-vinylphenyl) phosphine (L1), the remaining The catalyst synthesis process is the same as in Example 1.

Embodiment 3

[0060] In Example 3, except that 0.1 gram of free radical initiator azobisisobutyronitrile was weighed instead of 1.0 gram of free radical initiator azobisisobutyronitrile, the rest of the catalyst synthesis process was the same as that of Example 1.

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Abstract

The invention relates to a quaternary phosphonium salt organic polymer catalyst, a preparation method thereof, and applications of the quaternary phosphonium salt organic polymer catalyst in cyclic carbonates production. The quaternary phosphonium salt organic polymer catalyst is prepared via following steps: self-polymerization of an olefin functionalized quaternary phosphonium salt or mixing-polymerization of the olefin functionalized quaternary phosphonium salt with a cross-linking agent is carried out so as to obtain an organic polymer; a Lewis acid is added into the organic polymer, or noLewis acid is added into the organic polymer, wherein when the Lewis acid is added, coordination reaction of metal ions in the Lewis acid with N and / or P in the quaternary phosphonium salt organic polymer is realized; and an obtained product is the quaternary phosphonium salt organic polymer catalyst. The quaternary phosphonium salt organic polymer catalyst is a heterogeneous catalyst, is suitable to be used in reactors such as fixed bed reactors, slurry bed reactors, kettle-type reactors, and trickle bed reactors, possesses excellent catalytic effect in production of cyclic carbonates via addition reaction of an epoxy compound with CO2, is relatively high in catalytic activity, high in selectivity in cyclic carbonates production, high in substance applicability, and high in catalyst stability, and can be separated from reactants and products easily.

Description

technical field [0001] The invention belongs to the field of heterogeneous catalysis and fine chemical industry, and specifically relates to a quaternary phosphonium salt organic polymer catalyst and its application in the production of cyclocarbonate. Background technique [0002] With the continuous acceleration of the world's industrialization process, CO 2 emissions are increasing, global warming and climate anomalies are becoming increasingly severe; on the other hand, CO 2 It is also a cheap and valuable C1 resource that exists in abundance in nature. Therefore, the conversion of carbon dioxide into high value-added chemicals has attracted more and more attention from scientists. [0003] The addition reaction of carbon dioxide and epoxide can generate cyclocarbonate, an important chemical raw material. This is a 100% atom-economical reaction with no by-products formed, which are CO 2 An important way of transformation and utilization. Cyclocarbonate has the advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06C07D317/36C07D317/46
Inventor 丁云杰李存耀汪文龙严丽
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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