Mitsubishi Kasei Corporation

Akio Ueda

Tomoyuki Mori

Kouichi Fujita

Genichi Emoto

Morimasa Ogawa

Takao Kibayashi

Tsuneo Inoue

Keitaro Nakata

A method for producing an aldehyde, which comprises reacting an olefin with carbon monoxide and hydrogen in a hydroformylation reaction zone in the presence of a rhodium catalyst having an organophosphorus compound as a ligand, wherein a reaction solution withdrawn from the hydroformylation reaction zone, which contains an unreacted olefin, an aldehyde product and the catalyst, is countercurrently contacted with carbon monoxide and hydrogen in a contact tower to separate and recover the unreacted olefin without substantially deactivating the rhodium catalyst and supplying the recovered unreacted olefin together with the carbon monoxide and the hydrogen to the hydroformylation reaction zone.

Method for producing an aldehyde

A method for controlling a hydroformylation reaction for producing an aldehyde by subjecting an olefin, a feed oxo gas containing hydrogen and carbon monoxide, and a recycled gas withdrawn from a reactor and returned to the reactor, to a hydroformylation reaction in the reactor in the presence of a catalyst, which comprises:

Method of controlling a hydroformylation reaction

Growing community of inventors

Kurashiki, Japan

Akio Ueda