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Hydroformylation method and catalyst for preparing isononaldehyde

A catalyst, isononanal technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problem that multidentate phosphine ligands are rarely reported. , to achieve the effect of large industrialization potential and practical value, mild experimental conditions, and high conversion rate

Active Publication Date: 2021-03-05
广东欧凯新材料有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The mono / bidentate phosphine ligands used in the key step from straight / branched olefins to straight / branched aldehyde hydroformylation have been adopted by large foreign chemical companies such as BASF, Dow, Johnson Matthey, Shell, Evonik and Eastman, etc. Patentization and technology blockade, but multidentate phosphine ligands are rarely reported (Org. Lett. 2013, 15, 1048-1052.)

Method used

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  • Hydroformylation method and catalyst for preparing isononaldehyde
  • Hydroformylation method and catalyst for preparing isononaldehyde
  • Hydroformylation method and catalyst for preparing isononaldehyde

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Embodiment 1

[0033] Add rhodium compound (0.01mmol) and ligand L1-15 (0.03-0.12mmol ), add toluene, stir and complex with magneton for 30 minutes, generate the catalytic complex of rhodium / phosphine ligand. After preparing the catalyst solution, under the protection of an inert gas, add 30 mmol of C8 olefin mixture that removes water and oxygen, and then adds a certain amount of toluene to dilute the reactant to a certain concentration, so that the concentration of rhodium in the total reaction solution is at Around 105ppm. Close the reaction kettle and stir at room temperature for 1 to 5 minutes; subsequently, the reaction kettle is mixed with synthesis gas (CO / H 2 =1 / 1) After the pipeline is connected and the gas in the kettle is fully replaced three times, the pressure in the kettle is raised to 2.0 MPa. Then, use an electric heating mantle or a heat-collecting oil bath to raise the reaction kettle to the required temperature (70-140° C., depending on the ligand), and stir for 6-14 ho...

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Abstract

The invention discloses a hydroformylation homogeneous catalytic reaction method and a catalyst for preparing 3,5,5-trimethylhexanal from a mixture of 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene. The method and the catalyst are characterized in that a rhodium compound is used as a metal precursor of the catalyst; biphenyl tridentate and tetradentate phosphoramidite ligands are used asligands (frameworks I and II) of the catalyst to form a rhodium / polydentate phosphoramidite ligand catalytic system; a ratio of synthesis gas CO to H2 is 1: 1, a reaction temperature is 70-140 DEG C,a reaction pressure is 1-8 MPa, and a reaction lasts for 4-20 hours; and thus, 3,5,5-trimethylhexanal(isononaldehyde) is prepared from a C8 olefin mixture through a one-step reaction.

Description

technical field [0001] The invention relates to a kind of 2,4,4-trimethyl-1-pentene and 20% 2,4,4-trimethyl-2-pentene separated from the carbon four fraction of refinery, and iso Homogeneously catalyzed reaction method and catalyst for hydroformylation of nonanal. Background technique [0002] Refrigerant is commonly known as "refrigerant", and its impact indicators on the global environment mainly include ozone depletion potential (ODP) and global warming potential (GWP). At present, the refrigerant widely used in household air conditioners and heat pumps is R22, which belongs to the ozone-depleting substance HCFC (hydrochlorofluorocarbon), and is the most important transitional substitute for CFC (freon-hydrochlorofluorocarbon) substances. According to the Montreal Protocol, my country will phase out the production and consumption of HCFCs in all manufacturing industries by 2030. Alternative refrigerants for R22 can be roughly divided into three categories: the first cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/50C07C47/02B01J31/18
CPCC07C45/505B01J31/186B01J2531/822B01J2531/0241B01J2231/321C07C47/02Y02P20/584
Inventor 张润通彭江华王建新
Owner 广东欧凯新材料有限公司
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