Method for producing organoaldehyde prepared by hydroformylating of olefin

A kind of technology of olefin hydroformylation and production method, which is applied in the field of production of organic aldehydes by olefin hydroformylation

Inactive Publication Date: 2003-06-11
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using this catalyst system can solve the problem of catalyst and product separation and recycling, and then complete the present invention

Method used

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  • Method for producing organoaldehyde prepared by hydroformylating of olefin
  • Method for producing organoaldehyde prepared by hydroformylating of olefin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] use figure 1 The process flow is carried out under the following reaction conditions.

[0027] In the production method, the catalyst is prepared by a heterogeneous catalyst homogeneous method, and organic aldehyde products are prepared from synthesis gas and olefin mixed gas. Syngas is mainly composed of H 2 , CO and olefins, in this case ethylene, and H 2 / CO volume ratio is 1.0-4.0, syngas / C 2 h 4 The volume ratio is 0.5-3.0; the reaction conditions of hydroformylation are: the reaction temperature is 80-150°C, the reaction pressure is 0.05-10Mpa, and the air velocity of the mixed gas is 100-10000h -1 .

[0028] The catalytic reaction for preparing various organic aldehydes by hydroformylation of olefins is carried out on a rhodium-based catalyst modified by organic phosphine ligands supported by silica.

[0029] The products of various organic aldehydes produced by olefin hydroformylation have a boiling point of 46-50°, and the fraction contains at least 99% p...

Embodiment 2

[0032] According to the process flow described in Example 1, the reaction was carried out under the following reaction conditions.

[0033] Propylene in this example, and H 2 / CO volume ratio is 1.0-4.0, syngas / C 3 h 6 The volume ratio is 0.5-3.0; the reaction conditions of hydroformylation are: the reaction temperature is 80-150°C, the reaction pressure is 0.05-10Mpa, and the air velocity of the mixed gas is 100-10000h -1 .

[0034] The invention relates to a production method for preparing various organic aldehydes by hydroformylation of olefins on a rhodium-based catalyst modified by organic phosphine ligands supported by silica.

[0035] The product of various organic aldehydes produced by olefin hydroformylation has a boiling point of 75°, and the fraction contains at least 99% butyraldehyde by weight, wherein the n-butyraldehyde / isobutyraldehyde ratio is 2-10.

[0036] In addition, in this embodiment, the reaction product is condensed and collected through the produc...

Embodiment 3

[0038] According to the process flow described in Example 1, the reaction was carried out under the following reaction conditions.

[0039] 1-hexene in this example, and H 2 / CO volume ratio is 1.0-4.0, syngas / 1-C 6 h 12 The volume ratio is 0.5-3.0; the reaction conditions of hydroformylation are: the reaction temperature is 80-150°C, the reaction pressure is 0.05-10Mpa,

[0040] The invention relates to a production method for preparing various organic aldehydes by hydroformylation of olefins on a rhodium-based catalyst modified by organic phosphine ligands supported by silica.

[0041] The products of various organic aldehydes produced by hydroformylation of olefins have a boiling point of ca.

[0042] Take by weighing 15ml1-hexene and 60ml hexanaphthene and place in the slurry bed reactor, use inert gas (such as N 2 or Ar, 1.0MPa) to replace the air in the reactor three times, and then use CO and H from the pipeline 2 (CO / H 2 =1) mixed gas, the gas is first purified t...

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Abstract

The invention is a production course of making al kinds of organic aldehyde by alkene-hydrogen formylation, which adopts the developed catalyzer, the paste-state bed reaction techinque, the separation of gas and liquid product and paste-state liquid with the catalyzer, the separation of gas and liquid product with paste-state liquid and the catalyzer circulation. The produced lkiquid product in the catalyzing course is separated with the catalyzer, after simply filtered, and the paste-state liquid and the product can directly be the organic aldehyde be flash-evaporation separation or rectification. The organic aldehyde can produce corresponding alcohol by adding hydrogen.

Description

technical field [0001] The invention provides a reaction process for preparing various organic aldehydes by olefin hydroformylation and an industrialized production method thereof. Background technique [0002] The hydroformylation reaction is a typical atom-economical reaction. Its catalytic process and catalyst research have a history of nearly 60 years. At present, the homogeneous reaction system using hydrocarbon-soluble rhodium-phosphine complexes as catalysts is mainly used in industry. The concentration of rhodium is as high as 2.5×10 -4 ~3.0×10 -4 , in order to maintain a high ratio of isoaldehyde in the product, the ratio of phosphine to rhodium is as high as 250-300, and the cost of using it as a ligand is considerable, especially the difficulty in separating the product from the catalyst and the serious loss of rhodium, which are generally concerned by people Problems, homogeneous catalysis heterogeneous is the key way to solve the above problems, people have de...

Claims

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Application Information

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IPC IPC(8): C07C45/49
Inventor 丁云杰朱何俊严丽吕元林励吾
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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