Method for producing aldehyde
AssigneeMitsubishi Chemical Corporation
InventorsMasashi MIYAKE, Takashi SATO
Life of this patent
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Abstract
A method for producing an aldehyde includes the following steps (1) to (3): (1) withdrawing part or all of a reaction solution from a hydroformylation reaction zone while performing the hydroformylation reaction; (2) oxidizing by bringing the withdrawn reaction solution into contact with an oxygen-containing gas in an atmosphere having a total pressure of 0.8 MPaA or less and an oxygen partial pressure ratio of 10% or less; and (3) feeding the oxidized reaction solution to the hydroformylation reaction zone while maintaining a state in which the catalyst is dissolved or dispersed in the reaction solution.
Claims14
A method for producing an aldehyde by subjecting an olefin to a hydroformylation reaction with a gas containing hydrogen and carbon monoxide in the presence of a catalyst, the method comprising the following steps (1) to (3):
- (1) withdrawing part or all of a reaction solution from a hydroformylation reaction zone while performing the hydroformylation reaction;
- (2) oxidizing by bringing the withdrawn reaction solution into contact with an oxygen-containing gas in an atmosphere having a total pressure of 0.8 MPaA or less and an oxygen partial pressure ratio of 10% or less;
- and
- (3) feeding the oxidized reaction solution to the hydroformylation reaction zone while maintaining a state in which the catalyst is dissolved or dispersed in the reaction solution.
A method for producing an aldehyde by subjecting an olefin to a hydroformylation reaction with a gas containing hydrogen and carbon monoxide in the presence of a catalyst, the method comprising the following steps (1A), (2), and (3):
- (1A) withdrawing part or all of a reaction solution from a hydroformylation reaction zone;
- (2) oxidizing by bringing the withdrawn reaction solution into contact with an oxygen-containing gas in an atmosphere having a total pressure of 0.8 MPaA or less and an oxygen partial pressure ratio of 10% or less;
- and
- (3) feeding the oxidized reaction solution to the hydroformylation reaction zone while maintaining a state in which the catalyst is dissolved or dispersed in the reaction solution.
Dependencies are inferred from the claim text.