Title:
PRODUCTION OF ALDEHYDE
Document Type and Number:
Japanese Patent JP3965721
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently produce an aldehyde, by recovering rhodium from a waste catalyst solution and recycling rhodium as a catalyst again in hydroformylation reaction of an olefin using a rhodium complex as a catalyst.
SOLUTION: In this method for producing an aldehyde by hydroformylating a compound containing an olefinic unsaturated bond with carbon monoxide and hydrogen in the presence of a rhodium complex in a nonaqueous medium, (1) a rhodium-containing solution is separated from a hydroformylation reaction process, (2) the rhodium-containing solution is oxidized in the presence of an aqueous medium containing a promoter to extract rhodium in a water phase, (3) the water phase is separated from an organic phase, (4) the water phase containing rhodium is brought into contact with an organic solvent containing a water-insoluble tertiary organic phosphorus compound in the presence of carbon monoxide arid hydrogen to extract rhodium in the organic solvent, (5) separated into the organic phase containing the rhodium-tertiary organic phosphorus compound complex and a water phase and (6) the organic phase is recycled to a hydroformylation process.
Inventors:
Tomoyuki Mori
Masaki Takai
Tomohiko Inoue
Kazuyuki Yokoyama
Masaki Takai
Tomohiko Inoue
Kazuyuki Yokoyama
Application Number:
JP13328897A
Publication Date:
August 29, 2007
Filing Date:
May 23, 1997
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
B01J31/24; C07C45/80; C07B61/00; C07C45/50; C07C47/02; (IPC1-7): C07C47/02; B01J31/24; C07C45/50; C07C45/80; //C07B61/00
Domestic Patent References:
| JP3146423A | ||||
| JP2145440A | ||||
| JP52123397A | ||||
| JP10324525A | ||||
| JP10291996A | ||||
| JP248419A | ||||
| JP10102154A | ||||
| JP10102155A |
Foreign References:
| US3547964 |
Attorney, Agent or Firm:
Hasegawa Soji