14.
    发明专利
    未知

    公开(公告)号:DE59208990D1

    公开(公告)日:1997-12-04

    申请号:DE59208990

    申请日:1992-07-03

    Applicant: BASF AG

    Abstract: A method for the selective hydrogenation of butadiene to butenes in the liquid or trickle phase on firmly arranged noble metal supported catalysts, in which a C4 stream rich in butadiene having a butadiene content of 20 to 80 % by weight, relative to the C4 stream, is hydrogenated in two reaction zones connected in series such that the hydrogenation product of the first reaction zone contains 0.1 to 20 % by weight and the hydrogenation product of the second reaction zone contains 0.005 to 1 % by weight of residual butadiene relative to the C4 stream, with the proviso that the butadiene content of the hydrogenation product from the second reaction zone is reduced by at least the factor 5 compared to the butadiene content of the hydrogenation product from the first reaction zone.

    16.
    发明专利
    未知

    公开(公告)号:DE59402754D1

    公开(公告)日:1997-06-19

    申请号:DE59402754

    申请日:1994-03-15

    Applicant: BASF AG

    Abstract: Catalyst suitable for hydrogenation of organic cpds., comprises (all based on total wt. of catalyst); (a) 80 wt.% nickel (calculated as nickel oxide); (b) 10-25 wt.% of silicon (calculated as zirconium oxide; and (d) 0-10 wt.% of aluminium (calculated as aluminium oxide). The amt. of silicon dioxide and aluminium oxide is at least 15 wt.%. The catalyst is prepd. by; (2) adding an acidic aq. soln. of nickel-, zirconium- and opt. aluminium salts to a basic aq. soln. or suspension of silicon cpds. (and opt. aluminium cpds.), so that the pH of the resulting mixt. drops to at least 6.5; (2) adding a further basic soln. to bring the pH to 7-8; and (3) isolating the pptd. solid, which is then dried, formed and calcined.

    17.
    发明专利
    未知

    公开(公告)号:DE4123246A1

    公开(公告)日:1993-01-14

    申请号:DE4123246

    申请日:1991-07-13

    Applicant: BASF AG

    Abstract: A method for the selective hydrogenation of butadiene to butenes in the liquid or trickle phase on firmly arranged noble metal supported catalysts, in which a C4 stream rich in butadiene having a butadiene content of 20 to 80 % by weight, relative to the C4 stream, is hydrogenated in two reaction zones connected in series such that the hydrogenation product of the first reaction zone contains 0.1 to 20 % by weight and the hydrogenation product of the second reaction zone contains 0.005 to 1 % by weight of residual butadiene relative to the C4 stream, with the proviso that the butadiene content of the hydrogenation product from the second reaction zone is reduced by at least the factor 5 compared to the butadiene content of the hydrogenation product from the first reaction zone.

    20.
    发明专利
    未知

    公开(公告)号:DE19704128A1

    公开(公告)日:1998-08-06

    申请号:DE19704128

    申请日:1997-02-04

    Applicant: BASF AG

    Abstract: Process for dearomatising aromatic hydrocarbons into injection streams containing aromatic hydrocarbons is claimed, in which the injection stream is hydrogenated over a Ni-containing catalyst at 50-300 degrees C, 20-80 bar pressure, and using a catalyst charge of 1-6 kg/(l x h) in the presence of free hydrogen.

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