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    • 43. 发明专利
    • Method for measuring dispersibility of noble metal
    • 测量金属不锈钢的方法
    • JP2005164391A
    • 2005-06-23
    • JP2003403488
    • 2003-12-02
    • Toyota Central Res & Dev Lab Inc株式会社豊田中央研究所
    • NAGAI YASUTAKATANABE TOSHITAKA
    • G01N31/10B01J37/00
    • PROBLEM TO BE SOLVED: To measure a dispersibility with a high precision even in a catalyst using an oxide having an oxygen absorbing/discharging capacity; and to simply and inexpensively measure the dispersibility without using a complicated device such as a cooler.
      SOLUTION: CO
      2 is adsorbed by the catalyst. After the adsorption amount of CO
      2 is saturated, CO is adsorbed and the adsorption amount of CO is measured. The amount of an active noble metal being the amount of the noble metal having adsorbed CO is calculated from the adsorption amount of CO and the dispersibility of the noble metal is calculated from the ratio of the amount of the active noble metal to the total amount of the noble metal supported on the catalyst. Even when a part of CO adsorbed by the noble metal is oxidized to generate a carbonate seed, the carbonate seed is discharged without being adsorbed by an oxide carrier, and thereby the amount of CO adsorbed by only the noble metal is calculated by measuring the amount obtained by deducting the total amount of CO and carbonate seed in the gas from the supplied amount of CO.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:即使在使用具有氧吸收/放电能力的氧化物的催化剂中,也可以高精度地测量分散性; 并且简单且廉价地测量分散性,而不使用诸如冷却器的复杂装置。 解决方案:CO 2 被催化剂吸附。 在CO 2 的吸附量饱和后,吸附CO,测定CO的吸附量。 根据CO的吸附量计算活性贵金属的量为吸附有CO的贵金属的量,贵金属的分散性由活性贵金属的配合量与 负载在催化剂上的贵金属。 即使当由贵金属吸附的CO的一部分被氧化以产生碳酸盐晶种时,碳酸盐种子被排出而不被氧化物载体吸附,因此仅通过贵金属吸附的CO的量通过测量量 通过从供应量的CO中扣除气体中的CO和碳酸盐种子的总量获得。版权所有(C)2005,JPO&NCIPI
    • 48. 发明专利
    • Catalyst and its manufacturing method
    • 催化剂及其制造方法
    • JP2005296816A
    • 2005-10-27
    • JP2004117172
    • 2004-04-12
    • Toyota Central Res & Dev Lab Inc株式会社豊田中央研究所
    • YONEKURA HIROTAKATAKAHASHI NAOKITANABE TOSHITAKA
    • B01D53/86B01J23/63B01J37/02
    • PROBLEM TO BE SOLVED: To deposit a noble metal selectively on a specified oxide even when a carrier like a mixed oxide is used in which two or more kinds of oxides are dispersed at a nanometer level. SOLUTION: The noble metal is deposited selectively on one of a first porous oxide and a second porous oxide by bringing a liquid chemical of the noble metal into contact with the carrier containing the first porous oxide and the second porous oxide and utilizing the attractive force and repulsive force of a ζ electrical potential between the liquid chemical of the noble metal and each of the first porous oxide and the second porous oxide. A solid solution of CeO 2 -ZrO 2 exhibits a positive ζ electrical potential when the pH of the solid solution is 2 O 3 exhibits the positive ζ electrical potential when the pH is 2 -ZrO 2 and repulsed by Al 2 O 3 . COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:即使使用其中以纳米级分散两种或更多种氧化物的类似于混合氧化物的载体,也可以在特定氧化物上选择性地沉积贵金属。 解决方案:贵金属通过使贵金属的液体化学品与含有第一多孔氧化物和第二多孔氧化物的载体接触而选择性地沉积在第一多孔氧化物和第二多孔氧化物之一上,并利用 贵金属的液体化学品与第一多孔氧化物和第二多孔氧化物中的每一种之间的ζ电势的吸引力和排斥力。 当固溶体的pH <6.5时,CeO -ZrO 2 的固溶体表现出正ζ电位,pH值超过6.5时为负ζ电位 。 当pH <9.0时,当pH超过9.0时,Al 2 3 表现出正ζ电位。 当pH为6.5-9.0时显示出正ζ电位的四价十六烷铂沉积在载体上时,四氨基铂被CeO 2固体溶液吸附, 并且被Al 2 3 排斥。 版权所有(C)2006,JPO&NCIPI