Selective catalyst recovery
    4.
    发明授权
    Selective catalyst recovery 失效
    选择性催化剂恢复

    公开(公告)号:US3560539A

    公开(公告)日:1971-02-02

    申请号:US3560539D

    申请日:1968-08-21

    Applicant: UNION OIL CO

    Inventor: BOOTH FRANK B

    CPC classification number: C07C45/50 B01J23/96 C01G55/001 Y02P20/584 C07C47/02

    Abstract: A METHOD FOR THE RECOVERY OF COMPLEXES OF GROUP VIII NOBLE METALS AND BIPHYLLIC LIGANDS FROM HYDROCARBONS OR HIGH BOILING RESIDUES FORMED IN HYDROCARBONYLATION OF OLEFINS. THE GROUP VIII NOBLE METAL IS RECOVERED IN ACCORDANCE BY REDUCTION OF THE HIGH BOILING FRACTION OF A HYDROGORMYLATION REACTION MEDIUM TO CONVERT THE ALDEHYDE GROUPS THERETO TO ALCOHOLS. THIS REDUCTION IS EFFECTED BY TREATMENT WITH CONVENTIONAL MEANS E. G., HYDROGENATION IN THE PRESENCE OF HETEROGENEOUS HYDROGENATION CATALYSTS AT A TEMPERATURE FROM ABOUT 25* TO 325*C. OR BY NUCLEOPHILIC ATTACK BY HYDRIDE ION BY TREATMENT AT MIND CONDITIONS WITH AN ALKALI METAL ALUMINUM HYDRIDE OR BOROHYDRIDE. THE METAL COMPLEX IS ESSENTIALLY INSOLUBLE IN THE RESULTING ALCOHOL TAR AND THE CATALYST PRECIPITATE IS RECOVERED BY CONVENTIONAL SOLID-LIQUID SEPARATION TECHNIQUES, E.G., FILTRATION OR CENTRIFUGATION.

    Hydroformylation
    5.
    发明授权
    Hydroformylation 失效
    水力发电

    公开(公告)号:US3555098A

    公开(公告)日:1971-01-12

    申请号:US3555098D

    申请日:1967-12-13

    Applicant: UNION OIL CO

    CPC classification number: C07C45/50 C07C47/02

    Abstract: CATALYTIC ACTIVITY IS MAINTAINED IN A HYDROFORMYLATION REACTION BY THE TREATMENT OF ALL OR A PORTION OF THE RECYCLED REACTION MEDIUM CONTAINING THE CATALYST WITH AN AQUEOUS SOLUTION, PREFERABLY WITH AN ALKALINE AQUEOUS SOLUTION. THE TREATMENT IS EFFECTIVE AT MILD CONDITIONS AND RESULTS IN THE EXTRACTION OF THE BYPRODUCT ACID FORMED IN THE HYDROFORMYLATION WHICH UNLESS REMOVED DEACTIVATES THE CATALYST. THE INVENTION IS APPLICABLE TO THE HYDROFORMYLATION REACTIONS PERFORMED IN LIQUID PHASE USING A COMPLEX OF A BIPHYLIC LIGAND AND A GROUP VIII NOBLE METAL CATALYST, PREFERABLY A RHODIUM COMPLEX WITH A TRIARYL PHOSPHINE.

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