Production method and applications of cyclic carbonate

A production method and technology of cyclocarbonate, which is applied in the field of cycloaddition reaction to prepare cyclocarbonate, can solve the problems of difficult product separation and purification, and achieve the effect of increasing capture capacity, not easy to lose, and high activity

Active Publication Date: 2018-08-24
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the Co-porphyrin catalyst has achieved a high conversion rate at room temperature, and the number of cycles can reach 18, the reaction process is still a tank reaction, and 4-n-butylammonium bromide needs to be added as a cocatalyst. This makes the product separation and purification difficult

Method used

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  • Production method and applications of cyclic carbonate
  • Production method and applications of cyclic carbonate
  • Production method and applications of cyclic carbonate

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Under 298K and an inert gas protection atmosphere, 1.0g of tetrastyryl porphyrin monomer was dissolved in 150.0mL of dichloromethane solvent, and 18.1ml of triethylamine and 113mg of MgBr were added 2 ·Et 2 O, stirred for 12h, the mixture was filtered, washed with water, dried, extracted by Soxhlet for 72h, and then vacuum-dried at 40°C for 24h to obtain tetrastyryl functionalized magnesium porphyrin monomer (attached figure 1 , L4). Under 298K and an inert gas protection atmosphere, take 0.1 g of the above-mentioned vinyl functionalized magnesium porphyrin monomer and dissolve it in 12 ml of N,N-dimethylformamide, and then add 1.0 g of ethyl-tris(4-vinylbenzene ) phosphonium bromide (with figure 1 , L5), add 55mg free radical initiator azobisisobutyronitrile to the above solution, stir for 2 hours. The stirred solution was moved to an autoclave, and polymerized by solvothermal polymerization at 473K for 72h. After the above-mentioned polymerized solution is cooled ...

Embodiment 2

[0036] In Example 2, in addition to weighing 20.6mg CoCl 2 ·6H 2 O, alternative metal salt MgBr 2 ·Et 2 O, all the other catalyst synthesis processes are the same as in Example 1.

Embodiment 3

[0038] In embodiment 3, except taking by weighing 17.1mg Zn(OAc) 2 2H 2 O, alternative metal salt MgBr 2 ·Et 2 O, all the other catalyst synthesis processes are the same as in Example 1.

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Abstract

The invention relates to a production method and applications of cyclic carbonate. According to the present invention, the used catalyst is a multifunctional biomimetic heterogeneous catalyst formed by an organic porous copolymer based on metalloporphyrin and a quaternary phosphonium salt, the catalyst carrier is formed by carrying out mixed polymerization on alkylene-functionalized metalloporphyrin and a quaternary phosphonium salt, and the active component of the catalyst comprises metalloporphyrin (as a Lewis acid activation epoxy compound) and a quaternary phosphonium salt (as a ring-opening nucleophilic reagent) functional group; the obtained multifunctional biomimetic heterogeneous catalyst can be used for fixed beds, slurry beds, kettle type reactors, trickle beds and other reactors; the obtained multifunctional biomimetic heterogeneous catalyst has good performance, extremely high activity (2000-6000 h<-1>), good selectivity (more than 99%) of the formed cyclic carbonate and strong substrate applicability in the cyclic carbonate production reaction between the epoxy compound and the carbon dioxide, further has good stability, and can be simply and efficiently separated fromthe substrate and the product.

Description

technical field [0001] The present invention relates to a kind of production method and application of cyclocarbonate, specifically refers to a kind of by epoxide and carbon dioxide under the condition of multifunctional biomimetic heterogeneous catalyst of organic copolymer based on metal porphyrin and quaternary phosphonium salt, through cycloaddition The method and application of synthetic reaction preparation cyclocarbonate. Background technique [0002] CO 2 It is currently the most important greenhouse gas on the earth, and it is also an inexhaustible C1 resource on the earth. Traditional carbon resources such as oil, coal, and natural gas are all non-renewable resources. With the extensive use of fossil fuels and rising energy demand, these fossil fuels are being depleted, resulting in a "carbon source crisis". Therefore, due to the dual needs of environmental protection and energy, CO 2 The transformation and utilization of the technology has become the focus of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D317/36C07D317/42B01J31/22B01J35/10C08F230/02C08F212/34
CPCB01J31/183B01J35/1014B01J35/1019B01J35/1023B01J35/1028B01J35/1038B01J35/1042B01J35/1047B01J35/1057B01J35/1061B01J2531/025B01J2531/22B01J2531/26B01J2531/31B01J2531/62B01J2531/845C07D317/36C07D317/42C08F212/34C08F230/02
Inventor 丁云杰王玉清汪文龙严丽
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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