29.
    发明专利
    未知

    公开(公告)号:DE2904919A1

    公开(公告)日:1980-08-21

    申请号:DE2904919

    申请日:1979-02-09

    Applicant: BASF AG

    Abstract: Supported catalysts containing silver and alkali metals, for the preparation of ethylene oxide from ethylene and oxygen in the gas phase, are prepared or regenerated by modifying, respectively, a new or spent supported catalyst which already contains metallic silver and may or may not contain the light alkali metals lithium and/or sodium and, where a spent catalyst is concerned, also contains the heavy alkali metals potassium, rubidium and/or cesium, with a solution containing the heavy alkali metals, the modifier solution used containing (a) a surfactant and/or a reducing agent, in the case of the preparation of a new catalyst or (b) a surfactant, in the case of the regeneration of a spent catalyst.

Patent Agency Ranking