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155 条记录 (耗时 0.027 秒)

    Carbon combustion synthesis of oxides
    43.
    发明申请
    Carbon combustion synthesis of oxides 有权
    碳燃烧合成氧化物

    公开(公告)号：US20060097419A1

    公开(公告)日：2006-05-11

    申请号：US11231450

    申请日：2005-09-21

    申请人： Karen Martirosyan ,  Dan Luss

    发明人： Karen Martirosyan ,  Dan Luss

    IPC分类号： B29C65/00

    CPC分类号： C01G1/02 ,  C01B13/324 ,  C01B33/181 ,  C01B35/1027 ,  C01F17/0025 ,  C01G9/00 ,  C01G19/00 ,  C01G23/006 ,  C01G45/006 ,  C01G45/1264 ,  C01G49/0018 ,  C01G49/0027 ,  C01G49/0036 ,  C01G49/0054 ,  C01G49/009 ,  C01G51/00 ,  C01G53/006 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2006/42 ,  C09C1/0009

    摘要： The present invention is generally directed to a novel, economic synthesis of oxide ceramic composites. Methods of the present invention, referred to as carbon combustion synthesis of oxides (CCSO), are a modification of self-propagating high-temperature synthesis (SHS) methods in which the heat needed for the synthesis is generated by combustion of carbon in oxygen rather than that of a pure metal. This enables a more economic production of the ceramic material and minimizes the presence of intermediate metal oxides in the product. The reactant mixture generally comprises at least one oxide precursor (e.g., a metal or non metal oxide, or super oxide, or nitride, or carbonate, or chloride, or oxalate, or halides) as a reactant, but no pure metal. Pure carbon in the form of graphite or soot is added to the reactant mixture to generate the desired heat (upon ignition). The mixture is placed in a reactor and exposed to gaseous oxygen. The high-temperature exothermic reaction between the carbon and oxygen generates a self-sustaining reaction in the form of a propagating temperature wave that causes a reaction among the reactants. The reaction proceeds rapidly following ignition, and the final product comprises simple and/or complex oxides of elements present in the oxide precursor(s). CCSO also enables synthesis of oxides that cannot be produced by conventional SHS, such as when the pure metal is pyrophoric (such as Li or La) or such as when it melts at room temperature (e.g., Ga) or such as the combustion heat of the metal is relatively low.

    摘要翻译： 本发明一般涉及氧化物陶瓷复合材料的新型经济合成。 本发明的方法，称为碳燃烧合成氧化物（CCSO），是自蔓延高温合成（SHS）方法的改进，其中合成所需的热量是通过在氧气中燃烧碳而产生的 比纯金属。 这使得能够更经济地生产陶瓷材料并最小化产品中中间体金属氧化物的存在。 反应物混合物通常包含作为反应物的至少一种氧化物前体（例如，金属或非金属氧化物，或超氧化物，或氮化物，或碳酸盐，或氯化物，或草酸盐或卤化物），但不包括纯金属。 将石墨或烟灰形式的纯碳加入到反应混合物中以产生所需的热量（点火时）。 将混合物置于反应器中并暴露于气态氧气中。 碳和氧之间的高温放热反应以引起反应物之间的反应的传播温度波的形式产生自维持反应。 该反应在点燃之后迅速进行，并且最终产物包含存在于氧化物前体中的元素的简单和/或复合氧化物。 CCSO还能够合成不能通过常规SHS生产的氧化物，例如当纯金属是自燃的（例如Li或La）时，或者当其在室温下熔化时（例如Ga）或诸如燃烧热 金属相对较低。

    Perovskite complex oxide and catalyst
    44.
    发明申请
    Perovskite complex oxide and catalyst 审中-公开
    钙钛矿复合氧化物和催化剂

    公开(公告)号：US20060018815A1

    公开(公告)日：2006-01-26

    申请号：US11186957

    申请日：2005-07-22

    申请人： Hisashi Suda

    发明人： Hisashi Suda

    IPC分类号： C01F17/00

    CPC分类号： C01G45/1264 ,  B01D53/944 ,  B01D2255/402 ,  B01J23/002 ,  B01J23/63 ,  B01J23/6562 ,  B01J23/8946 ,  B01J2523/00 ,  C01G1/00 ,  C01G49/0054 ,  C01P2002/34 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/88 ,  B01J2523/24 ,  B01J2523/3706 ,  B01J2523/842 ,  B01J2523/72

    摘要： A perovskite complex oxide is provided whose ratio of thermogravimetric weight decrease between 50° C. and 180° C. to thermogravimetric weight decrease between 50° C. and 1000° C. is not less than 30% and which contains, for example, one or more rare earth element species and one or more transition metal elements. Among perovskite complex oxides represented by structural formula RTO3, ones in which R is constituted by one or more rare earth element species and T is constituted by one or more transition metal elements, and ones in which R is constituted by one or more rare earth element species and one or more members selected from the group comprising alkali metal elements and alkali earth metal elements and T is constituted by one or more transition metal elements are excellent for use. A “rare earth element species” is defined as a member of the group of elements obtained by adding Y to the rare earth elements. The perovskite complex oxide is an excellent carrier for a vehicle exhaust gas purification catalyst that imparts catalytic activity in the low-temperature region.

    摘要翻译： 提供钙钛矿复合氧化物，其热重量比在50℃和180℃之间降低至50℃至1000℃之间的重量比重量不小于30％，并且其包含例如一种 或更多的稀土元素物质和一种或多种过渡金属元素。 在由结构式RTO 3 N表示的钙钛矿复合氧化物中，其中R由一种或多种稀土元素物质构成，T由一种或多种过渡金属元素构成，R为 由一种或多种稀土元素种类和一种或多种选自碱金属元素和碱土金属元素的元素构成，T由一种或多种过渡金属元素构成，其使用优异。 “稀土元素物质”被定义为通过向稀土元素中添加Y获得的元素组中的成员。 钙钛矿复合氧化物是在低温区域赋予催化活性的车辆废气净化催化剂的优异载体。

    Preparation of iron compounds by hydrothermal conversion
    45.
    发明申请
    Preparation of iron compounds by hydrothermal conversion 失效
    通过水热转化制备铁化合物

    公开(公告)号：US20040096380A1

    公开(公告)日：2004-05-20

    申请号：US10642893

    申请日：2003-08-18

    发明人： Edgar Evert Steenwinkel ,  Johannes Petrus Jozef Verlaan ,  Marieke Paulyne Renate Spee ,  Erik Jeroen Laheij ,  Paul O'Connor ,  Dennis Stamires

    IPC分类号： C22B023/00

    CPC分类号： C01G49/0063 ,  C01G49/0018 ,  C01G49/0054 ,  C01G49/02 ,  C01G49/06 ,  C01P2002/54 ,  C01P2006/12

    摘要： A continuous process for the hydrothermal conversion of a solid starting iron compound selected from the group of iron oxides, iron hydroxides, iron oxyhydroxides, and mixtures thereof into a solid product iron compound with different physical, chemical, and/or structural properties. The process comprises the steps of a) dispersing the solid starting iron compound in a liquid thus forming a suspension, and b) feeding the suspension continuously though one or more agitated conversion vessel(s), in which vessel(s) the solid starting iron compound is converted into the solid product iron compound under hydrothermal conditions.

    摘要翻译： 将选自氧化铁，氢氧化铁，羟基氧化铁及其混合物的固体起始铁化合物水热转化成具有不同物理，化学和/或结构性质的固体产物铁化合物的连续方法。 该方法包括以下步骤：a）将固体起始铁化合物分散在液体中，从而形成悬浮液，和b）通过一个或多个搅拌转化容器连续供给悬浮液，其中容器为固体起始铁 化合物在水热条件下转化为固体产物铁化合物。

    Oxide magnetic material
    46.
    发明申请
    Oxide magnetic material 有权
    氧化物磁性材料

    公开(公告)号：US20040026654A1

    公开(公告)日：2004-02-12

    申请号：US10381133

    申请日：2003-03-24

    发明人： Sachio Toyota ,  Isamu Furuchi ,  Yoshinori Kobayashi

    IPC分类号： H01F001/00

    CPC分类号： H01F1/11 ,  C01G49/0054 ,  C01G49/009 ,  C01P2004/62 ,  C01P2006/11 ,  C01P2006/42 ,  C04B35/2633 ,  C04B35/2683 ,  C04B2235/3224 ,  C04B2235/3274 ,  C04B2235/3298 ,  C04B2235/3409 ,  H01F1/10

    摘要： A ferrite magnet powder and a ferrite magnet exhibiting improved magnetic properties are provided at a reduced manufacturing cost. An application product and manufacturing methods thereof are also provided. An oxide magnetic material includes, as a main phase, a ferrite having a hexagonal M-type magnetoplumbite structure. The material includes: A, which is at least one element selected from the group consisting of Sr, Ba, Pb and Ca; R, which is at least one element selected from the group consisting of Y (yttrium), the rare earth elements and Bi; Fe; and B (boron). The constituents A, R, Fe and B of the material satisfy the inequalities of 7.04 at %nullAnull8.68 at %, 0.07 at %nullRnull0.44 at %, 90.4 at %nullFenull92.5 at % and 0.015 at %nullBnull0.87 at % to the sum of the elements A, R, Fe and B.

    摘要翻译： 以降低的制造成本提供铁氧体磁体粉末和呈现磁性能改善的铁氧体磁体。 还提供了一种应用产品及其制造方法。 氧化物磁性材料包括具有六方M型磁铅矿结构的铁素体作为主相。 该材料包括：A，其为选自Sr，Ba，Pb和Ca中的至少一种元素; R是选自Y（钇），稀土元素和Bi的至少一种元素; 铁 和B（硼）。 材料的成分A，R，Fe和B满足7.04at％的不等式<= A = 8.68at％，0.07at％<= R <= 0.44at％，90.4at％<= Fe <= 92.5at％ 和元素A，R，Fe和B之和的0.015at％<= B <= 0.87 at％。