ALUMINUM OXIDE PRODUCTION METHOD
    32.
    发明申请
    ALUMINUM OXIDE PRODUCTION METHOD 有权
    氧化铝生产方法

    公开(公告)号:US20150376021A1

    公开(公告)日:2015-12-31

    申请号:US14765695

    申请日:2013-02-04

    摘要: The invention pertains to methods of producing aluminum trioxide in the form of powders or agglomerations with particles having a porous honeycomb structure, which can be used as catalyst substrates, adsorbents and filters for the chemical, food, and pharmaceutical industry. The method of production of aluminum oxide in the form of powders or agglomerations with particles having a porous honeycomb structure involves the treatment of the aluminum salt with a solution of an alkaline reagent, washing of the sediment and thermal treatment thereof. The technical result of the invention is the production of aluminum oxide in the form of separate particles with given structure and properties, specifically, with particle porosity of 60-80% and a porous structure represented by extensive parallel channels with near hexagonal packing, with dimension of the channels at the diameter of 0.3 to 1.0 mcm and length up to 50 mcm. For this, the aluminum salt used is crystals of aluminum chloride hexahydrate, which are treated with an excess aqueous solution of ammonia at temperature of 20-80° C. to form boehmite, and the heat treatment is done at 450-650° C. until aluminum oxide is formed.

    摘要翻译: 本发明涉及可以用作催化剂底物,用于化学,食品和制药工业的吸附剂和过滤器的具有多孔蜂窝结构的颗粒的具有粉末或团聚形式的三氧化铝的方法。 用具有多孔蜂窝结构的颗粒的粉末或团聚体形式的氧化铝的制造方法包括用碱性试剂的溶液,沉淀物的洗涤和热处理来处理铝盐。 本发明的技术结果是以具有给定结构和性质的分离颗粒形式的氧化铝的生产,特别是具有60-80%的颗粒孔隙率和由具有近似六边形填料的大量平行通道表示的多孔结构,尺寸 的直径为0.3至1.0mcm,长度达50mcm。 为此,使用的铝盐是氯化铝六水合物的晶体,其在20-80℃的温度下用过量的氨水溶液处理以形成勃姆石,并且热处理在450-650℃下进行。 直到形成氧化铝。