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Method for preparing isononyl alcohol from mixed octylene

A technology of isononanol and octene, applied in the field of heterogeneous catalysis, can solve the problems of limited industrial application of catalysts, loss of catalytic active components, limited loading of phosphorus ligands, etc., achieves excellent alcohol product selectivity, reduces Separation cost, the effect of reducing the cost of subsequent purification and separation

Inactive Publication Date: 2021-06-04
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

However, polymeric supports purchased commercially or prepared by conventional styrene radical polymerization are severely limited due to issues such as gel formation, polymer swelling, limited loading of phosphorus ligands in the polymer backbone, and loss of catalytically active components. Industrial applications of such catalysts

Method used

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  • Method for preparing isononyl alcohol from mixed octylene
  • Method for preparing isononyl alcohol from mixed octylene
  • Method for preparing isononyl alcohol from mixed octylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Preparation of heterogeneous catalyst for hydroformylation

[0030] Under 298K and an inert gas Ar protective atmosphere, 10.0 grams of tris (4-vinylphenyl) phosphine ligands were dissolved in 100 ml of tetrahydrofuran solvent, and 0.25 grams of free radical initiator azobisisobutyronitrile was added to the above solution, Stir for 0.5 hours. The stirred solution was transferred to a hydrothermal autoclave, and polymerized by solvothermal method at 373K and an inert gas Ar atmosphere for 24h. After the above polymerization, cool to room temperature, and vacuum remove the solvent under the temperature condition of 333K to obtain a porous organic polymer containing a phosphine ligand (its specific surface area is 1025m 2 / g, the pore volume is 1.48m 3 / g, the pore size distribution is 0.2-100.0nm). Under the protective atmosphere of 298K and inert gas Ar, 0.1253 g of rhodium acetylacetonate dicarbonyl was weighed and dissolved in 200 ml of tetrahydrofuran solvent, a...

Embodiment 2

[0038] 1) Preparation of heterogeneous catalyst for hydroformylation

[0039] The preparation of the hydroformylation heterogeneous catalyst is the same as in Example 1.

[0040] 2) Mixed octene hydroformylation reaction process

[0041] The hydroformylation heterogeneous catalyst prepared above is loaded into a fixed-bed reactor, and quartz sand is loaded at both ends. into the synthesis gas (H 2 :CO=1:1) and raw material mixed octene (2,4,4-trimethyl-1-pentene content 90.6%, 2,4,4-trimethyl-2-pentene content 9.2%), The mixed octene is transported into the reaction system by a high-pressure pump, and the synthesis gas is directly fed in the form of gas. At 373K, 3MPa, mixed octene liquid hourly space velocity 2.13h -1 , Syngas gas space velocity 1125h -1 conditions for the hydroformylation reaction. The reaction product was collected at 2.5°C via a collection tank equipped with circulating cooling. The obtained liquid phase product was analyzed by HP-7890N gas chromato...

Embodiment 3

[0047] 1) Preparation of heterogeneous catalyst for hydroformylation

[0048] The preparation of the hydroformylation heterogeneous catalyst is the same as in Example 1.

[0049] 2) Mixed octene hydroformylation reaction process

[0050] The hydroformylation heterogeneous catalyst prepared above is loaded into a fixed-bed reactor, and quartz sand is loaded at both ends. into the synthesis gas (H 2 :CO=1:1) and raw material mixed octene (2,4,4-trimethyl-1-pentene content 90.6%, 2,4,4-trimethyl-2-pentene content 9.2%), The mixed octene is transported into the reaction system by a high-pressure pump, and the synthesis gas is directly fed in the form of gas. At 413K, 5MPa, mixed octene liquid hourly space velocity 0.2h -1 , Syngas gas space velocity 1125h -1 conditions for the hydroformylation reaction. The reaction product was collected at 2.5°C via a collection tank equipped with circulating cooling. The obtained liquid phase product was analyzed by HP-7890N gas chromatog...

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Abstract

The invention relates to a method for preparing isononyl alcohol from mixed octylene, which is characterized in that the isononyl alcohol is synthesized by taking the mixed octylene as a raw material under the action of a catalyst through a two-step method. The method comprises the following steps: 1) reacting raw material mixed octylene with synthesis gas on a hydroformylation heterogeneous catalyst to generate 3, 5, 5-trimethyl hexanal; and 2) continuing the reaction, and carrying out aldehyde hydrogenation reaction on the hydrogenation catalyst to generate the target product 3, 5, 5-trimethyl-1-hexanol. The method is characterized in that 1) the hydroformylation solid heterogeneous catalyst is composed of a metal component and an organic ligand polymer, and the component forms a coordinate bond; the method is characterized in that the hydrogenation catalyst in the step 2) comprises the main components of Ni, Mg, Na, a selectivity improver and a carrier material treated by ammonia, the novel solid heterogeneous catalyst is adopted in the reaction in the method, the reaction activity and selectivity are excellent, the stability is good, and the method is suitable for large-scale industrial production; and the cost of separating the catalyst from reactants and products is reduced, and the industrial application prospect is wide.

Description

technical field [0001] The invention relates to a method for preparing isononanol from mixed octene, which belongs to the technical field of heterogeneous catalysis. Background technique [0002] At present, the production of isononyl alcohol plasticizers in my country is almost blank, and has been relying on imports. Not only are the quantities small, but the prices are high, which restricts the development of the plastics processing industry and the improvement of quality. It is a more feasible method in industrial production to prepare isononanol by hydroformylation and hydrogenation of cheap mixed octene raw materials. The core of the method technology is the first step, that is, the mixed octene raw materials are hydroformylated to prepare isononanal. At present, cobalt-catalyzed technology still plays a pivotal role in the hydroformylation reaction of long-chain olefins to high-carbon aldehydes / alcohols, but due to its harsh reaction conditions, poor selectivity, many...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/141C07C31/125C07C45/50C07C47/02B01J31/24B01J31/22B01J23/78
CPCB01J23/78B01J31/1691B01J31/2213B01J31/2404B01J2231/321B01J2531/0216B01J2531/822C07C29/141C07C45/505C07C47/02C07C31/125
Inventor 姜淼丁云杰严丽王国庆程显波金明
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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