Tantalum oxide and/or niobium oxide and method for preparation thereof
    6.
    发明申请
    Tantalum oxide and/or niobium oxide and method for preparation thereof 审中-公开
    氧化钽和/或氧化铌及其制备方法

    公开(公告)号:US20070178040A1

    公开(公告)日:2007-08-02

    申请号:US10592360

    申请日:2005-03-11

    IPC分类号: C01G31/02

    摘要: A method for preparing tantalum oxide and/or niobium oxide, characterized in that it comprises adding a basic aqueous solution to an aqueous solution of tantalum fluoride salt and/or niobium fluoride salt, to form tantalum hydroxide and/or niobium hydroxide, and then firing said tantalum hydroxide and/or niobium hydroxide. The above method allows the preparation of the tantalum oxide and/or niobium oxide in the state of a needle crystal or columnar crystal, not of a spherical crystal or an assemblage form.

    摘要翻译: 一种氧化钽和/或氧化铌的制备方法,其特征在于,包括向氟化钽盐和/或氟化铌盐水溶液中添加碱性水溶液,形成氢氧化钽和/或氢氧化铌,然后进行烧成 所述氢氧化钽和/或氢氧化铌。 上述方法允许以针状晶体或柱状晶体的状态制备氧化钽和/或氧化铌,而不是球形晶体或组合形式。

    Method for producing tantalum oxide and/or niobium oxide in form of hollow particle
    7.
    发明申请
    Method for producing tantalum oxide and/or niobium oxide in form of hollow particle 审中-公开
    用于制造中空颗粒形式的氧化钽和/或氧化铌的方法

    公开(公告)号:US20070189957A1

    公开(公告)日:2007-08-16

    申请号:US10592372

    申请日:2005-03-11

    IPC分类号: C01G31/02 C01G33/00

    CPC分类号: C01G33/00 C01G35/00

    摘要: The object of the invention is to provide tantalum oxide and/or niobium oxide in the form of hollow particles. Disclosed is a method comprising adding hydrazine or an aqueous solution of hydrazine to (1) an aqueous solution of a tantalum compound and/or a niobium compound, to (2) an aqueous solution of fluorotantalic acid and/or fluoroniobic acid, or to (3) a solution obtained by dissolving crystallized fluorotantalic acid and/or crystallized fluoroniobic acid in water, to produce tantalum hydroxide and/or niobium hydroxide, and firing the tantalum hydroxide and/or niobium hydroxide.

    摘要翻译: 本发明的目的是提供中空颗粒形式的氧化钽和/或氧化铌。 公开了一种方法,其包括向(1)钽化合物和/或铌化合物的水溶液中加入肼或肼的水溶液,加入(2)氟代花青酸和/或氟铌酸的水溶液或( 3)通过将结晶的氟代花青酸和/或结晶的氟铌酸溶解在水中而制得的氢氧化钽和/或氢氧化铌获得的溶液,以及氢氧化钽和/或氢氧化铌的烧制。