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A method for olefin hydroformylation using a solid heterogeneous catalyst

A kind of technology of olefin hydroformyl, heterogeneous catalyst

Active Publication Date: 2017-04-19
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

Although many innovative concepts have emerged in these catalytic systems, the loss of active metals in these systems is serious, or the stability of the catalyst is poor, or expensive organic ligands and solvents are used, or the preparation process of the catalyst is cumbersome. Complexity, etc., cannot meet the needs of industrial production
In heterogeneous catalytic systems, there are only a small number of reports on adding metal additives to heterogeneous catalysts to improve their catalytic performance, but because the catalytic activity of these systems is far lower than that of homogeneous catalytic systems, they cannot meet the needs of industrial production.

Method used

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  • A method for olefin hydroformylation using a solid heterogeneous catalyst
  • A method for olefin hydroformylation using a solid heterogeneous catalyst
  • A method for olefin hydroformylation using a solid heterogeneous catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Under 298K and a nitrogen gas protection atmosphere, 10.0 grams of tris (4-vinylphenyl) phosphine was dissolved in 100.0 ml of tetrahydrofuran solvent, and 1.0 grams of free radical initiator azobisisobutyronitrile was added to the above solution, and stirred for 2 hours . The stirred solution was allowed to stand at 373K under a nitrogen atmosphere for 24h. After the above-mentioned standing solution is cooled to room temperature, the solvent is vacuumed off at room temperature (about 298K), and the tris(4-vinylphenyl)ylphosphine is polymerized by solvothermal method to obtain a compound containing P ligand polymer. The three (4-vinylphenyl) phosphine ligand polymer carrier polymerization technical route in the present embodiment is as follows:

[0056]

[0057] Among them, the degree of polymerization n is 450-550, with a hierarchical pore structure including macropores, mesopores and micropores, and the measured BET specific surface area is 981m 2 / g, the pore ...

Embodiment 2

[0060] Refer to Example 1 for the synthesis of tris(4-vinylphenyl)phosphine ligand polymer carrier. Under 298K and a nitrogen gas protection atmosphere, take 0.5 mg of acetylacetonate dicarbonyl rhodium (I), join in a three-necked flask filled with 100.0 ml of tetrahydrofuran solvent, stir and dissolve, add 1.0 g of the above-mentioned preparation with a hierarchical porous structure The P-ligand-containing polymer, the mixture was stirred at 298K and nitrogen gas protection atmosphere for 24 hours, and then the solvent was vacuumed off at room temperature, and the self-supported P-ligand polymer with a hierarchical porous structure was obtained. Metallic Rh as solid heterogeneous catalysts. Add the solid heterogeneous catalyst of the metal Rh self-supported by the P ligand-containing polymer with a hierarchical porous structure prepared above into the fixed-bed reactor, and feed ethylene gas as the olefin raw material with a molar ratio of 1:2 and CO / H 2 Mixed gas (wherein ...

Embodiment 3

[0062] Refer to Example 1 for the synthesis of tris(4-vinylphenyl)phosphine ligand polymer carrier. Under 298K and a nitrogen gas protection atmosphere, get 12.53 mg of acetylacetonate dicarbonyl rhodium (I) and join in a three-necked flask filled with 100.0 ml of tetrahydrofuran solvent, stir and dissolve, add 1.0 g of the above-mentioned prepared rhodium with hierarchical pore structure P ligand-containing polymer, the mixture was stirred at 298K and a nitrogen gas protection atmosphere for 24 hours, and then the solvent was vacuumed off at room temperature to obtain a self-supported P-ligand polymer with a hierarchical pore structure. Solid heterogeneous catalysts for metallic Rh. Add the solid heterogeneous catalyst prepared above into a fixed-bed reactor, and feed propylene gas and CO / H 2 Mixed gas (wherein H 2 :CO volume ratio=1:1), at 393K, 1.0MPa, the olefin gas volume space velocity is 1000h -1 , CO / H 2 The volume space velocity of the mixed gas is 2000h -1 condi...

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Abstract

The present invention relates to a method for the hydroformylation of olefins, characterized in that the method uses a solid heterogeneous catalyst consisting of a metal component and an organic ligand polymer with a hierarchical porous structure, wherein The metal component is one or more of metal Rh, Ir or Co, and the organic ligand polymer is a polymer formed after polymerization of organic ligand monomers containing P, olefin groups and optional N In the solid heterogeneous catalyst, the metal component forms a coordination bond with the P atom or N in the organic ligand polymer skeleton and exists in a single-atom dispersed state, the method includes in the In the presence of the solid heterogeneous catalyst, the olefin raw material and CO / H2 mixed gas are used to carry out the olefin hydroformylation reaction in a reactor. The method uses a novel solid heterogeneous catalyst, the reaction process and device are simple, the hydroformylation performance of the catalyst is stable, the activity and the yield are high, and the method has broad industrial application prospects.

Description

technical field [0001] The invention relates to a method for catalyzing olefin hydroformylation by using a novel solid heterogeneous catalyst, which belongs to the field of heterogeneous catalytic reaction technology. Background technique [0002] The hydroformylation reaction is olefin and synthesis gas (CO+H 2 ) reaction to prepare an aldehyde with one carbon higher than the raw material olefin. The reason why hydroformylation technology is widely used in the chemical industry and has become one of the most important technologies is mainly because its product aldehyde is a useful chemical intermediate, which can synthesize carboxylic acids and their corresponding esters, and Fatty amine, etc., the most important use is that it can be converted into alcohol by hydrogenation, and alcohol itself can be widely used in the field of fine chemical industry as organic solvent, plasticizer and surfactant. With the increasing demand for aldehydes and alcohols in industries such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C45/50C07C47/22C07C47/21B01J31/24
CPCB01J31/24B01J2531/822C07C45/505C07C47/02Y02P20/50
Inventor 丁云杰严丽姜淼林荣和
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI