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A kind of preparation method and application of hydroformylation catalyst

A hydroformylation catalyst and a catalyst technology are applied in the field of preparation of hydroformylation catalysts, which can solve the problems of difficult separation of reaction products and catalysts, and achieve the effects of stable activity, reduced production cost and high selectivity.

Active Publication Date: 2022-08-05
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a novel immobilized hydroformylation catalyst and its preparation method and application, to solve the problem that the reaction product and the catalyst are difficult to separate during the olefin hydroformylation process, reduce the loss of the catalyst, and simultaneously Products can be obtained with high yield and high selectivity under relatively mild conditions, reducing production costs, and the catalyst is stable, and the activity can still be maintained after repeated repeated applications

Method used

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  • A kind of preparation method and application of hydroformylation catalyst
  • A kind of preparation method and application of hydroformylation catalyst

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Experimental program
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Effect test

Embodiment 1

[0026] (1) catalyst preparation: add 100g chloromethylated polystyrene (Aladdin reagent) in the three-necked flask, add 40g concentrated sulfuric acid (concentration 98wt%) and concentrated nitric acid (concentration 98wt%) mass ratio 1:1 mixture, the reaction The temperature was 50°C, the reaction time was 2h, filtered after the reaction, washed with 500ml deionized water, dried at 120°C for 48h, weighed to obtain 102g of resin intermediate A, and added 102g of intermediate A to 510g, 10wt% sodium hydroxide solution , heated to 60°C, reacted for 5h, generated catalyst intermediate B, filtered, washed with 200ml of deionized water, dried at 120°C for 24h, and weighed 97g. 97g of intermediate B was added to the three-necked flask, 97g of butyllithium solution with a mass concentration of 10wt% was added dropwise, the reaction temperature was -78°C, and after the reaction for 0.5h, 9.7g of diethyl chlorophosphite was added, and the reaction temperature was -78 ℃, reaction time 0...

Embodiment 2

[0034](1) catalyst preparation: add 100g of chloromethylated polystyrene (Aladdin reagent) in the three-necked flask, add 300g of concentrated sulfuric acid (concentration 98wt%) and concentrated nitric acid (concentration 98wt%) mass ratio 1:1 mixture, the reaction The temperature was 110°C, the reaction time was 10h, filtered after the reaction, washed with 500ml of deionized water, dried at 110°C for 48h, weighed to obtain 103g of resin intermediate A, and added 103g of intermediate A to 1030g of 50% sodium hydroxide solution , heated to 120°C, reacted for 20h, generated catalyst intermediate B, washed with 200ml of deionized water, dried at 120°C for 24h, and weighed 95g. 95g of intermediate B was added to the three-necked flask, 475g of butyllithium solution with a concentration of 10wt% was added dropwise, the reaction temperature was 10°C, after 3 hours of reaction, 47.5g of dimethyl chlorophosphite was added, the reaction temperature was 30°C, and the reaction time 3h,...

Embodiment 3

[0041] (1) catalyst preparation: add 100g of chloromethylated polystyrene (Aladdin reagent) in the three-necked flask, add 100g of concentrated sulfuric acid (concentration 98wt%) and concentrated nitric acid (concentration 98wt%) in a mass ratio of 1:1 mixture, reaction The temperature was 80°C, the reaction time was 6h, filtered after the reaction, washed with 500ml deionized water, dried at 110°C for 48h, weighed to obtain 110g of resin intermediate A, and added 110g of intermediate A to 220g, 50% sodium hydroxide solution , heated to 90°C, reacted for 10h to generate catalyst intermediate B, washed with 200ml of deionized water, dried at 120°C for 24h, weighed 101g, added 101g of intermediate B to a three-necked flask, and added 202g dropwise with a mass concentration of 10wt% butyllithium solution, the reaction temperature was -30 °C, after 1 h of reaction, 20.2 g of diethyl chlorophosphite was added, the reaction temperature was -30 °C, the reaction time was 3 h, filtered...

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Abstract

The invention relates to a preparation method of a supported hydroformylation catalyst. The method uses chloromethylated polystyrene resin as a raw material, and through a series of chemical transformations, supports rhodium and / or cobalt metal to form a final supported type catalyst. The catalyst catalyzes the hydroformylation of olefins, has high conversion rate and selectivity, the product and the catalyst can be directly separated, the metal loss rate is low, the catalyst activity is stable, and the economy of the hydroformylation process is significantly improved.

Description

technical field [0001] The invention relates to a preparation method and application of a hydroformylation catalyst. technical background [0002] Cobalt or rhodium catalysts are generally used in the hydroformylation of olefins. At present, homogeneous catalytic systems are mostly used in industry, which inevitably brings about the problem of catalyst separation or reuse. Especially for the catalytic systems of high-carbon olefins, aldols The separation temperature of the product and the catalyst is high, the rhodium catalyst is prone to decomposition loss at high temperature, and the activity is reduced, while the cobalt catalyst separation process is complicated and tedious, which brings certain corrosion and three waste problems, and increases the cost of the product. [0003] Due to the problem that the catalyst and the product are not easily separated, the research on the immobilization of the catalyst for the hydroformylation reaction has received extensive attention....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07C47/02C07C45/50C08F8/40C08F8/12C08F8/30C08F8/24C08F112/08
CPCB01J31/185B01J31/1691C07C45/505C08F8/40B01J2231/321B01J2531/822C07C47/02C08F8/12C08F8/30C08F8/24C08F112/08
Inventor 黄少峰袁帅任亚鹏许振成黎源
Owner WANHUA CHEM GRP CO LTD