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    1.
    发明专利
    未知

    公开(公告)号：DE3643248A1

    公开(公告)日：1988-06-30

    申请号：DE3643248

    申请日：1986-12-18

    Applicant: BASF AG

    Inventor： BOEHNING KARL-HEINZ DR ,  MROSS WOLF DIETER DR ,  SCHWARZMANN MATTHIAS DR ,  BECKER HANS-JUERGEN DR ,  PLUECKHAN JUERGEN DR ,  RENNER KLAUS-CHRISTIAN DR

    IPC: B01J23/66 ,  C07D301/10 ,  B01J32/00 ,  C07D303/04

    Abstract: A silver catalyst containing lithium and cesium as promoters for the direct oxidation of ethylene with oxygen to give ethylene oxide is applied to a porous carrier and essentially consists of alpha -alumina and contains certain amounts of soluble calcium, aluminum, potassium and sodium salts. The carrier has a BET surface area of from 0.4 to 0.8 m2/g, a pore volume of not less than 0.45 ml/g, the pores being equally accessible to cold and warm water, a bulk density of less than 700 kg/m3 and a shape which, in the reactor, provides a geometrical surface area of not less than 600 m2/m3, on which more than 13% by weight of silver are applied as active component and more than 115 kg of silver are available per m3 of reactor, and from 100 to 300 ppm by weight of lithium and from 200 to 600 ppm by weight of cesium are present as promoters. A process for the preparation of the silver catalyst and its use for the oxidation of ethylene are described.

    4.
    发明专利
    未知

    公开(公告)号：DE3869033D1

    公开(公告)日：1992-04-16

    申请号：DE3869033

    申请日：1988-09-22

    Applicant: BASF AG

    Inventor： BECKER HANS-JUERGEN DR ,  GEIERHAAS HERBERT DR ,  IRGANG MATTHIAS DR ,  SPRAGUE MICHAEL JOLYON DR

    IPC: B01D53/34 ,  B01D53/48 ,  B01J20/06

    Abstract: A zine oxide contg desulphurisation material is claimed, contg 20-80 wt% high surface-area Zn0 and 20-80 wt% basic zinc carbonate, mixed with water to form, dried and calcined. The surface area of the zinc oxide is min 10 m2/g, pref over 30 m2/g; technical grade zinc carbonate is used, of formula 5Zno.2C02.3H20 The oxide and carbonate are blended with water (10-60 wt%, pref 20-50%, taken as proportion of total content), blending time 1-10h, usually 1-5h. The mixt is formed, and dried, and calcined.

    6.
    发明专利
    未知

    公开(公告)号：DE3766083D1

    公开(公告)日：1990-12-13

    申请号：DE3766083

    申请日：1987-12-09

    Applicant: BASF AG

    Inventor： BOEHNING KARL-HEINZ DR ,  MROSS WOLF DIETER DR ,  SCHWARZMANN MATTHIAS DR ,  BECKER HANS-JUERGEN DR ,  PLUECKHAN JUERGEN DR ,  RENNER KLAUS-CHRISTIAN DR

    IPC: B01J23/66 ,  C07D301/10

    Abstract: A silver catalyst containing lithium and cesium as promoters for the direct oxidation of ethylene with oxygen to give ethylene oxide is applied to a porous carrier and essentially consists of alpha -alumina and contains certain amounts of soluble calcium, aluminum, potassium and sodium salts. The carrier has a BET surface area of from 0.4 to 0.8 m2/g, a pore volume of not less than 0.45 ml/g, the pores being equally accessible to cold and warm water, a bulk density of less than 700 kg/m3 and a shape which, in the reactor, provides a geometrical surface area of not less than 600 m2/m3, on which more than 13% by weight of silver are applied as active component and more than 115 kg of silver are available per m3 of reactor, and from 100 to 300 ppm by weight of lithium and from 200 to 600 ppm by weight of cesium are present as promoters. A process for the preparation of the silver catalyst and its use for the oxidation of ethylene are described.

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