METHOD FOR THE PREPARATION OF BORON NITRIDE POWDER
    2.
    发明申请
    METHOD FOR THE PREPARATION OF BORON NITRIDE POWDER 审中-公开
    硝酸硼粉的制备方法

    公开(公告)号:WO2010106541A1

    公开(公告)日:2010-09-23

    申请号:PCT/IL2010/000220

    申请日:2010-03-17

    Abstract: This invention is directed to a process for the preparation of boron nitride powder, particularly a fine powder with a low degree of contamination, which demonstrates good caking, heat conductivity and dielectric properties. Specifically, a process for the preparation of amorphous boron nitride (a-BN) is provided wherein the process comprises: mixing powders of boric acid and a carbamide at a temperature in the range of about 250-300°C, thereby forming: ammonium polyborates; boron imide or a mixture thereof and ammonia; and heating of the materials formed in step (a) to a temperature in the range of about 500-600°C, thereby forming a powder of a-BN.

    Abstract translation: 本发明涉及一种制备氮化硼粉末,特别是具有低污染度的细粉末的方法,其表现出良好的结块,导热性和介电性能。 具体地,提供了一种制备无定形氮化硼(a-BN)的方法,其中该方法包括:在约250-300℃的温度范围内混合硼酸和脲的粉末,由此形成:聚硼酸铵 ; 硼酰亚胺或其混合物和氨; 和将步骤(a)中形成的材料加热至约500-600℃的温度,从而形成a-BN的粉末。

    CATALYST FOR THE LOW-TEMPERATURE PYROLYSIS OF HYDROCARBON-CONTAINING POLYMER MATERIALS
    5.
    发明申请
    CATALYST FOR THE LOW-TEMPERATURE PYROLYSIS OF HYDROCARBON-CONTAINING POLYMER MATERIALS 审中-公开
    用于含烃聚合物材料的低温热解的催化剂

    公开(公告)号:WO0015403A2

    公开(公告)日:2000-03-23

    申请号:PCT/UA9900017

    申请日:1999-08-25

    CPC classification number: C10G1/10 B01J23/745 B01J37/084

    Abstract: The present invention relates to a catalyst used in the low-temperature pyrolysis of hydrocarbon-containing polymer materials, said catalyst being mainly intended for use in the recycling of rubber waste materials. The catalyst is prepared from a carbon-iron component in the form of microscopic carbon particles and ultra-dispersed iron particles. In order to increase the yield of light hydrocarbon fractions in the condensate and to bind substantially completely the sulphur in the products of the rubber pyrolysis, the catalyst further contains a metal-carbon component. This component consists of the product from the stripping and the pyrolysis of a dispersion that comprises at least one salt of a metal from the group VIII in the periodic table which is capable of decay upon heating in order to form an oxide, wherein said metal is selected from the group comprising iron, nickel and cobalt. The dispersion further includes a carbohydrate as well as a highly volatile solvent.

    Abstract translation: 本发明涉及用于含烃聚合物材料的低温热解的催化剂,所述催化剂主要用于橡胶废料的再循环。 该催化剂由微观碳颗粒和超分散铁颗粒形式的碳 - 铁组分制备。 为了增加冷凝物中轻质烃馏分的产率并基本上完全结合橡胶热解产物中的硫,催化剂还含有金属 - 碳组分。 该组分由来自汽提和热解分散体的产物组成,所述分散体包含至少一种来自周期表第VIII族的金属盐,其在加热时能够衰变以形成氧化物,其中所述金属是 选自铁,镍和钴。 分散体还包含碳水化合物以及高挥发性溶剂。

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