22.
    发明专利
    未知

    公开(公告)号:DE102004049940A1

    公开(公告)日:2006-04-20

    申请号:DE102004049940

    申请日:2004-10-13

    Applicant: BASF AG

    Abstract: A C4-olefin mixture having a 1,3-butadiene content of from 100 to 500 ppm and a content of 1,2-dienes of less than 10 ppm is described. The present invention further provides a process for preparing this C4-olefin mixture and provides for its use in a metathesis reaction for preparing 2-pentene and/or 3-hexene.

    23.
    发明专利
    未知

    公开(公告)号:DE102004041850A1

    公开(公告)日:2006-03-02

    申请号:DE102004041850

    申请日:2004-08-27

    Applicant: BASF AG

    Abstract: Processes for preparing a C5 aldehyde and propene are disclosed, the processes comprising: (a) providing a feedstream, the feedstream comprising butane, 1-butene, 2-butene and 1,3-butadiene, the 1,3-butadiene present in the feedstream in an amount up to 1000 ppm; (b) contacting the feedstream with hydrogen and carbon monoxide in the presence of a hydroformylation catalyst to form a 2-butene-rich butane stream and a C5 aldehyde; (c) separating the 2-butene-rich butane stream and the C5 aldehyde; and (d) contacting the 2-butene-rich butane stream with ethene in the presence of a metathesis catalyst to form a propene-containing hydrocarbon stream.

    SUPPORTED CATALYST COMPRISING DELTA- OR THETA-MODIFIED ALUMINIUM OXIDE SUPPORTS

    公开(公告)号:CA2557345A1

    公开(公告)日:2005-09-09

    申请号:CA2557345

    申请日:2005-02-24

    Applicant: BASF AG

    Abstract: Process for producing a supported catalyst which comprises at least 75% by weight of Al 2 O 3 , whose proportion of Al 2 O 3 in the delta or theta modification is, based on the proportion of Al 2 O 3 , at least 1% and which comprises a rhenium compound and, if appropriate, a promoter as active component (A), which comprises a) converting a customary support (S) which comprises at least 75% by weight of Al 2 O 3 and to which a promoter may, if appropriate, have been applied is converted into a modified support (S) whose proportion of Al 2 O 3 in the delta or theta modification is, based on the proportion of Al 2 O 3 , at least 1% by calcining the customary support (S) at a temperature of from 750 to 1100°C., b) producing a supported catalyst precursor from the modified support (S) by applying the active component (A) comprising the rhenium compound to the modified support (S) and c) calcining the supported catalyst precursor at a temperature of from 500 to 750° C.

    26.
    发明专利
    未知

    公开(公告)号:DE502005002594D1

    公开(公告)日:2008-03-06

    申请号:DE502005002594

    申请日:2005-08-06

    Applicant: BASF AG

    Abstract: Processes for preparing a C5 aldehyde and propene are disclosed, the processes comprising: (a) providing a feedstream, the feedstream comprising butane, 1-butene, 2-butene and 1,3-butadiene, the 1,3-butadiene present in the feedstream in an amount up to 1000 ppm; (b) contacting the feedstream with hydrogen and carbon monoxide in the presence of a hydroformylation catalyst to form a 2-butene-rich butane stream and a C5 aldehyde; (c) separating the 2-butene-rich butane stream and the C5 aldehyde; and (d) contacting the 2-butene-rich butane stream with ethene in the presence of a metathesis catalyst to form a propene-containing hydrocarbon stream.

    METHOD FOR PRODUCING PROPENE FROM 2-BUTENE AND ISOBUTENE-RICH FEEDING FLOWS

    公开(公告)号:CA2598322A1

    公开(公告)日:2006-08-31

    申请号:CA2598322

    申请日:2006-02-24

    Applicant: BASF AG

    Abstract: Preparation of an ethene stream (C 2), a propene stream (C 3), an isobutene and optionally a 4C-olefin stream (C 4), a 2-methyl-2-butene and optionally 2-butene stream (C 5), and optionally other hydrocarbons containing stream (C x), optionally several separate components containing streams, comprises contacting a C4-hydrocarbon stream with ethene in a metathesis step; and separating the streams. Preparation of an ethene stream (C 2), a propene stream (C 3), an isobutene and optionally 4C olefin stream (C 4), a 2-methyl-2-butene and optionally 2-butene stream (C 5), and optionally other hydrocarbons containing stream (C x), optionally several separate components containing streams, comprises: (A) a metathesis step, in which a C4-hydrocarbon stream, containing at least 2-butene (15 wt.%), at least isobutene (5 wt.%) and 1-butene (less than 5 wt.%) (feed stream), is contacted with ethene in the presence of usual metathesis catalysts; and (B) separation of the streams (C2, C3, C4 and optionally Cx) from the obtained hydrocarbon stream, with the stream (C5) completely or partially led back to the metathesis step. Independent claims are included for methods for preparing feed stream, comprising subjecting naphtha or other hydrocarbon compounds to steam cracking or fluid catalytic cracking (FCC)-process, or dehydrating butane containing hydrocarbon stream and followed by purifying the obtained C4-olefin-mixture containing isobutene, 2-butene, butadiene, optionally butyne and optionally 1-butene, and removing the obtained stream of C4-olefin-mixture; and removing butadiene and butyne by means of selective hydrogenation to butene or butane hydride, or butadiene and butyne by extractive distillation of the obtained C4-olefin-mixture (raffinate I), where the content of 1,3-butadiene is at a maximum of 1000 wt. ppm.

Patent Agency Ranking