9.
    发明专利
    未知

    公开(公告)号:DE2931585A1

    公开(公告)日:1981-02-12

    申请号:DE2931585

    申请日:1979-08-03

    Applicant: DEGUSSA

    Abstract: There is provided temperature stabilized pyrogenically produced aluminum oxide-mixed oxide having a BET surface area of 50 to 200 m2/g which contains 0.5 to 20 weight % silicon dioxide as a constituent thereof. Because of the silicon dioxide constituent the aluminum oxide does not change into the alpha -Al2O3 phase until 1350 DEG C. The temperature stabilized aluminum oxide-mixed oxide is suitable for the production of thermal insulation compositions.

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