Process for removing contaminant cations from a stream with high surface area triple layered perovskites
    66.
    发明授权
    Process for removing contaminant cations from a stream with high surface area triple layered perovskites 失效
    从具有高表面积三层钙钛矿的流中除去污染物阳离子的方法

    公开(公告)号:US06379557B1

    公开(公告)日:2002-04-30

    申请号:US09444649

    申请日:1999-11-22

    Inventor: Robert L. Bedard

    Abstract: A process for synthesizing a family of non-pillared metal oxide triple layered perovskite has been developed. The perovskite has a surface area of at least 30 m2/g and an empirical formula of AB2M3O10−x where A is a monovalent exchangeable cation such as cesium, B is a divalent or trivalent cation such as strontium or lanthanum and M is a +2, +3, +4 or a +5 valent metal such as niobium, titanium, aluminum or copper. The process involves forming a reaction mixture containing reactive sources of A, B and M at a pH greater than seven and a temperature and time sufficient to form the perovskite. A process for removing contaminants from effluent streams using the above perovskites is also disclosed.

    Abstract translation: 已经开发了合成非柱状金属氧化物三层钙钛矿族的方法。 钙钛矿的表面积至少为30m2 / g,经验式为A,其中A为一价可交换阳离子,如铯,B为二价或三价阳离子如锶或镧,M为+2,+3, +4或+5价金属如铌,钛,铝或铜。 该方法包括在大于7的pH下形成含有A,B和M的反应性源的反应混合物,以及足以形成钙钛矿的温度和时间。 还公开了使用上述钙钛矿从流出物流中除去污染物的方法。

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