Title:
RECOVERY METHOD OF ALDEHYDE
Document Type and Number:
Japanese Patent JP2022147135
Kind Code:
A
Abstract:
To provide a recovery method of aldehyde for easily and efficiently separating and recovering aldehyde and a rhodium complex catalyst from a reaction product in a hydroformylation reaction for producing aldehyde by a hydroformylation reaction of olefin in the presence of a rhodium complex catalyst.SOLUTION: A recovery method of aldehyde includes sequentially conducting the following processes (i)-(iv) to separate aldehyde and a hydroformylation catalyst from a mixture containing the saturated linear or saturated branched-chain aldehyde having a melting point of -5°C or higher, and the hydroformylation catalyst containing rhodium and an organic phosphorous compound. (i) Aromatic hydrocarbon and a poor solvent are added to the mixture. (ii) The mixture is heated to homogenize. (iii) The aldehyde is precipitated by cooling. (iv) The precipitated aldehyde is recovered.SELECTED DRAWING: None
Inventors:
TANAKA YOSHIYUKI
KIDOBA KAZUSHI
KIDOBA KAZUSHI
Application Number:
JP2021048262A
Publication Date:
October 06, 2022
Filing Date:
March 23, 2021
Export Citation:
Assignee:
MITSUBISHI CHEM CORP
International Classes:
C07C45/81; B01J31/22; B01J38/00; C07C45/50; C07C47/02
Attorney, Agent or Firm:
Tsuyoshi Shigeno
Takayuki Shigeno
Takayuki Shigeno
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