13.
    发明专利
    未知

    公开(公告)号:DE58902282D1

    公开(公告)日:1992-10-22

    申请号:DE58902282

    申请日:1989-07-21

    Applicant: BASF AG

    Abstract: Alkyl pentenoates are prepared by (a) reacting butadiene or a butadiene-containing hydrocarbon mixture with carbon monoxide and an alkanol in the presence of a tertiary aromatic heterocyclic nitrogen base and a cobalt carbonyl catalyst at from 80 DEG to 160 DEG C. under from 100 to 1,000 bar to obtain a reaction mixture which contains alkyl pentenoate, C6-diester, tertiary nitrogen base, alkanol, butadiene, hydrocarbon and by-product, (b) substantially removing from the reaction mixture obtained any excess hydrocarbon, nitrogen base, alkanol and alkyl pentenoate by distillation to obtain a residue which contains cobalt carbonyl catalyst, (c) bringing the residue which contains cobalt carbonyl catalyst into contact with a mixture of carbon monoxide and hydrogen at elevated temperature and elevated pressure, and (d) recycling the residue which contains cobalt carbonyl catalyst into alkyl pentenoate synthesis stage (a).

    16.
    发明专利
    未知

    公开(公告)号:DE3719938A1

    公开(公告)日:1988-12-29

    申请号:DE3719938

    申请日:1987-06-15

    Applicant: BASF AG

    Abstract: omega -Formylalkanecarboxylic esters are prepared by hydroformylation of alkenecarboxylic esters with carbon monoxide and hydrogen at elevated temperature and under elevated pressure in the presence of cobalt carbonyl complexes, in which alpha , beta -unsaturated alkenecarboxylic esters are hydroformylated in the presence of 0.01 to 1 mol% of cobalt carbonyl complexes, calculated as cobalt, while maintaining a conversion of alpha , beta -unsaturated alkenecarboxylic esters of 10 to 70 %.

    20.
    发明专利
    未知

    公开(公告)号:DE19626587A1

    公开(公告)日:1998-01-08

    申请号:DE19626587

    申请日:1996-07-02

    Applicant: BASF AG

    Abstract: The invention relates to a catalyst comprising alpha -aluminium oxide as the support material and copper as the active constituent, the BET surface (as defined in DIN 66131) of the aluminium oxide being not lower than 30 m /g. It also relates to a process for preparing said catalyst according to the invention, and the use thereof in dehydrogenation of cyclohexanol to form cyclohexanone, and also to the use of alpha -aluminium oxide, the BET surface (as defined in DIN 66131) of said aluminium oxide being not lower than 30 m /g, to prepare a catalyst.

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