Heat-resistant noble metal catalyst and method of producing the same
    2.
    发明授权
    Heat-resistant noble metal catalyst and method of producing the same 失效
    耐热贵金属催化剂及其制造方法

    公开(公告)号:US4959339A

    公开(公告)日:1990-09-25

    申请号:US336218

    申请日:1989-04-11

    申请人: Hiromichi Arai

    发明人: Hiromichi Arai

    摘要: A heat-resistant noble metal catalyst having both of exceedingly superior heat-resistant property and a remarkable high activity at any temperature ranges of low, middle, and high, is provided having a heat-reistant noble metal catalyst consisting essentially of a composition having a formula A.sub.1-z C.sub.z B.sub.x D.sub.u Al.sub.12-y-u O.sub.19-.alpha., wherein A is at least one element selected from the group consisting of Ba, Ca and Sr, C is at least one element selected from the group consisting of K, Rb and rare earth elements, B is at least one element selected from the group consisting of Mn, Co, Fe, Ni, Cu and Cr, D is at least one element selected from the group consisting of Au, Ag and platinum group noble metals, z is a value in a range of 0-about 0.4, x is a value in a range of 0-about 4, y is a value in a range of x-2x, u is a value of not less than about 0.01, x+u is a value of not more than about 4, and .alpha. is a value which is determined by the values X, Y, Z and U of the respective elements, A, C, B and D and the values of x, y, z and u and is expressed as.alpha.=1-1/2{X-z(X-Y)+xZ+uU-3y-3u}.A method of producing such a catalyst is also provided.

    Deflection apparatus for cathode ray tube
    3.
    发明授权
    Deflection apparatus for cathode ray tube 失效
    阴极射线管偏转装置

    公开(公告)号:US5786672A

    公开(公告)日:1998-07-28

    申请号:US807947

    申请日:1997-02-28

    CPC分类号: H01J29/701

    摘要: A deflection apparatus arranged on the outer circumference of a funnel of a cathode ray tube includes a deflection yoke having vertical deflection coils and horizontal deflection coils. A compensation coil is provided on the outer circumference of a front end opening portion of the deflection yoke. An electrostatic capacitance element is connected between both end terminals of the compensation coil. The capacity of the electrostatic capacitance element is set such that an inducing voltage generated between both end terminals of the compensation coil is equal to or lower than a predetermined value.

    摘要翻译: 设置在阴极射线管的漏斗的外圆周上的偏转装置包括具有垂直偏转线圈和水平偏转线圈的偏转线圈。 在偏转线圈的前端开口部的外周设有补偿线圈。 静电电容元件连接在补偿线圈的两端部之间。 静电电容元件的容量被设定为使得在补偿线圈的两端部之间产生的感应电压等于或小于预定值。

    Process of refining sodium hexafluorosilicate
    8.
    发明授权
    Process of refining sodium hexafluorosilicate 失效
    精制六氟硅酸钠的工艺

    公开(公告)号:US4161511A

    公开(公告)日:1979-07-17

    申请号:US873883

    申请日:1978-01-31

    IPC分类号: C01B33/10

    CPC分类号: C01B33/103

    摘要: Crude sodium hexafluorosilicate containing gypsum and various metal phosphates is refined into highly pure and sufficiently large crystals. First, the crude fluorosilicate is treated with a sodium chloride solution to dissolve gypsum. Then the solid phase is reconstituted into an aqueous slurry in which the concentration of Na is limited. This slurry is acidified and maintained at temperatures not lower than 80.degree. C. with continued stirring to cause recrystallization of sodium hexafluorosilicate.

    摘要翻译: 含有石膏和各种金属磷酸盐的六氟硅酸钠被精制成高纯度且足够大的晶体。 首先,用氯化钠溶液处理粗制氟硅酸盐以溶解石膏。 然后将固相重构成其中Na浓度受限的含水浆料。 将该浆料酸化并保持在不低于80℃的温度下,继续搅拌,引起六氟硅酸钠的重结晶。