Multi-phase catalyst for preparing propionaldehyde by ethene hydroformylation and method for using multi-phase catalyst

A technology of ethylene hydroformylation and heterogeneous catalysts, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve product separation difficulties and catalyst recovery costs Advanced problems, to achieve the effect of simple process flow, stable performance and simple separation

Active Publication Date: 2015-06-03
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

[0008] In order to solve the problems of difficult product separation and high catalyst recovery costs in the homogeneous catalyst synthesis method, people began to study ho

Method used

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  • Multi-phase catalyst for preparing propionaldehyde by ethene hydroformylation and method for using multi-phase catalyst
  • Multi-phase catalyst for preparing propionaldehyde by ethene hydroformylation and method for using multi-phase catalyst
  • Multi-phase catalyst for preparing propionaldehyde by ethene hydroformylation and method for using multi-phase catalyst

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Experimental program
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Embodiment 1

[0037] Under 298K and nitrogen protection atmosphere, 500.0 g of tris(4-vinylphenyl) phosphine was dissolved in 5000.0 ml of tetrahydrofuran solvent, 50.0 g of free radical initiator azobisisobutyronitrile was added to the above solution, and stirred for 2 hours. The stirred solution was left to stand at 373K for 24h under a nitrogen atmosphere. After the above-mentioned standing solution is cooled to room temperature, the solvent is vacuumed off at room temperature to obtain a P-containing ligand polymer with a hierarchical porous structure formed by tris(4-vinylphenyl)phosphine through solvothermal polymerization. material carrier. The three (4-vinylphenyl) phosphine ligand polymer carrier polymerization technical route in the present embodiment is as follows:

[0038]

[0039] Here, the degree of polymerization n is independently in the range of 450-550.

[0040] The specific surface area and pore size distribution of the sample were measured on an Autosorb-1 adsorptio...

Embodiment 2

[0044] Except that desalted water was used instead of propionaldehyde as the bubbling liquid, and the reaction temperature was set at 393K, other processes were the same as in Example 1. The reaction results are shown in Table 1.

Embodiment 3

[0046] Except adopting 475.3 grams of iridium (III) acetylacetonate to replace rhodium acetylacetonate dicarbonyl (I) in the preparation of the catalyst, other processes were the same as in Example 1. The reaction results are shown in Table 1.

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Abstract

The invention relates to a multi-phase catalyst for preparing propionaldehyde by ethene hydroformylation and a fixed bubbling bed reaction technology using the catalyst. More specifically, the multi-phase catalyst is formed by self-loading a transitional metal component by an organic ligand polymer carrier; the organic ligand polymer carrier is formed by polymerizing organic ligand monomers containing P, randomly selected N and alkenyl by a solvent thermal polymerization method and adopts a multistage pore structure; the transitional metal component is one or more of Rh, Ir and Co; furthermore, the content of the transitional metal component is 1-20.0 percent based on the total weight of the catalyst. The preparation method for the catalyst and a reaction technology and a reaction device which apply the catalyst are simple; propionaldehyde prepared by ethene hydroformylation of the catalyst is stable in performance and high in activity and yield; ethene hydroformylation reaction with strong reaction heat is realized; the multi-phase catalyst has wide industrial application prospect.

Description

technical field [0001] The invention relates to a novel heterogeneous catalyst for producing propionaldehyde by ethylene hydroformylation and a method for using the catalyst to produce propionaldehyde by ethylene hydroformylation. technical background [0002] Propionaldehyde is an important raw material for organic synthesis, mainly used in the production of propionic acid, propanol and other intermediates, widely used in rubber, paint, plastics, medicine, spices, agriculture, food and textile industries. At present, propanol oxidation method, ethylene oxide isomerization method, acrolein hydrogenation method, propylene oxidation to acetone by-product method and ethylene hydroformylation method are mainly used in the industrial production of propionaldehyde in the world. Formylation synthesis is the main method. [0003] The hydroformylation synthesis method (Chemical Reviews, 2012, 112, 5675-5732) uses ethylene, carbon monoxide and hydrogen as raw materials, and uses Co o...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07C45/50C07C47/02
CPCY02P20/50
Inventor 丁云杰林荣和姜淼严丽
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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