PRODUCTION OF SUPPORTED CHROMIUM CATALYST

    公开(公告)号:JPH10130321A

    公开(公告)日:1998-05-19

    申请号:JP28507097

    申请日:1997-10-17

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject catalyst which can produce a polymer, for example, an α-olefin polymer of a high molecular weight as well as narrow molecular weight distribution by allowing a chromium compound to coalesce into the catalyst-supporting material and firing the coalesced product. SOLUTION: (A) A chromium compound is allowed to coalesce into (B) the supporting material and they are fired at 400-1,100 deg.C, then treated with (C) a moisture and inactive gas mixture. The component A is SiO2 , Al2 O3 , MgO, ZrO2 , TiO2 , B2 O3 , CaO, ZnO or their mixture or silica gel. The treatment with the component C is preferably carried out in a gas-phase fluidized bed at 20-100 deg.C and nitrogen or a rare gas such as argon is preferably used as the component C.

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