25.
    发明专利
    未知

    公开(公告)号:BR8200313A

    公开(公告)日:1982-11-23

    申请号:BR8200313

    申请日:1982-01-21

    Abstract: The invention deals with a process for preparing a diester of oxalic acid from carbon monoxide and an ester of nitrous acid in the vapor phase under a pressure in the presence of a special palladium supported catalyst. The catalyst is a solid palladium supported catalyst comprising metallic palladium or a salt thereof deposited on a nonacidic carrier, such as alpha-alumina, having a surface area of less than about 10 square meters per gram. This process provides an increased conversion to the diester product, a longer catalyst life and less by-product formation.

    OXALATE ESTERS FROM CARBON MONOXIDE AND NITRITE

    公开(公告)号:AU7975682A

    公开(公告)日:1982-07-29

    申请号:AU7975682

    申请日:1982-01-22

    Abstract: The invention deals with a process for preparing a diester of oxalic acid from carbon monoxide and an ester of nitrous acid in the vapor phase under a pressure in the presence of a special palladium supported catalyst. The catalyst is a solid palladium supported catalyst comprising metallic palladium or a salt thereof deposited on a nonacidic carrier, such as alpha-alumina, having a surface area of less than about 10 square meters per gram. This process provides an increased conversion to the diester product, a longer catalyst life and less by-product formation.

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