Catalyst for production of epoxides and methods for production thereof and epoxides
    1.
    发明授权
    Catalyst for production of epoxides and methods for production thereof and epoxides 失效
    用于生产环氧化物的催化剂及其生产方法和环氧化物

    公开(公告)号:US06600056B1

    公开(公告)日:2003-07-29

    申请号:US09664170

    申请日:2000-09-18

    IPC分类号: C07D30110

    摘要: It provide a catalyst for the production of epoxides by a vapor-phase oxidation of an unsaturated hydrocarbon having a chain length of 4-20 carbon atoms and containing no allylic hydrogen atom, characterized by having a catalytic component containing silver and at least one element selected from the group consisting of alkali metals and thallium deposited onto a carrier obtained by mixing &agr;-alumina having a sodium content in the range of 1-70 mmol (as reduced to Na) per kg of &agr;-alumina with an aluminium compound, a silicon compound, and a sodium compound and calcining the resultant mixture, the carrier having a silicon content (as reduced to SiO2) in the range of 0.3 -11.5 mass % based on the mass of the carrier and a sodium content (as reduced to Na2O) in the range of 0.11-2.5 mass % based on the mass of the carrier.

    摘要翻译: 它提供了一种催化剂,用于通过气相氧化具有4-20个碳原子的链长度并且不含烯丙基氢原子的不饱和烃的气相氧化来生产环氧化物,其特征在于具有含有银的催化组分和至少一种元素选择 从由碱金属和铊组成的组中沉积到载体上,所述载体通过将钠盐含量为1-70mmol(还原成Na)/α-羟基铝与铝化合物的α-氧化铝混合而获得,硅 化合物和钠化合物,并煅烧所得混合物,载体的硅含量(还原为SiO 2)为0.3-11.5质量%,基于载体的质量和钠含量(还原为Na 2 O) 相对于载体的质量为0.11〜2.5质量%。

    Superconductive material
    5.
    发明授权
    Superconductive material 失效
    超导材料

    公开(公告)号:US5360786A

    公开(公告)日:1994-11-01

    申请号:US100139

    申请日:1993-08-02

    IPC分类号: H01L39/12 H01B1/00

    摘要: The disclosed superconductive material has a characteristic in accordance with which electrical resistance disappears at a temperature of at least more than the boiling point of 20.3.degree. K. (-252.7.degree. C.) of liquid hydrogen and relates to La-Ba-Cu-O series superconductive material.Said superconductive material consists essentially of a composition having the formula(La.sub.1-x M.sub.x).sub.2 CuO.sub.4-x/2wherein, M=Ba or Ba(Sr, Ca) and x=0.04.about.0.20 as a main body, wherein the material has a K.sub.2 NiF.sub.4 crystal structure.

    摘要翻译: 所公开的超导材料具有根据其电阻在至少大于液态氢的20.3°K(-252.7℃)的沸点的温度下消失的特性,并且涉及La-Ba-Cu-O 系列超导材料。 所述超导材料基本上由具有式(La1-xMx)2CuO4-x / 2的组合物组成,其中M = Ba或Ba(Sr,Ca)和x = 0.04 DIFFERENCE 0.20为主体,其中该材料具有K2NiF4 晶体结构。