METHOD FOR SYNTHESIS OF BORON SUBOXIDE
    2.
    发明申请
    METHOD FOR SYNTHESIS OF BORON SUBOXIDE 有权
    合成二氧化硼的方法

    公开(公告)号:US20140227158A1

    公开(公告)日:2014-08-14

    申请号:US13767358

    申请日:2013-02-14

    IPC分类号: C01B35/10

    CPC分类号: C01B35/1027

    摘要: Methods of preparing boron suboxide are provided herein. In some embodiments, a method for preparing boron suboxide may include loading elemental boron powder into a furnace; purging the furnace by flowing a first gas comprising one of nitrogen or an inert gas into the furnace; heating the boron powder in a reactive atmosphere comprising a mixture of argon and a non-reducing oxygen-containing gas to convert elemental boron powder into boron suboxide powder, wherein the amount of oxygen in the reactive atmosphere is no greater than about 1%.

    摘要翻译: 本文提供了制备低氧化硼的方法。 在一些实施方案中,制备低氧化硼的方法可包括将元素硼粉末加入炉中; 通过将包括氮气或惰性气体中的一种的第一气体流入炉中来吹扫炉; 在包含氩和非还原性含氧气体的混合物的反应气氛中加热硼粉末,以将元素硼粉末转化成低氧化硼粉末,其中反应气氛中的氧气量不大于约1%。

    Carbon combustion synthesis of oxides
    7.
    发明授权
    Carbon combustion synthesis of oxides 有权
    碳燃烧合成氧化物

    公开(公告)号:US07897135B2

    公开(公告)日:2011-03-01

    申请号:US11231450

    申请日:2005-09-21

    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。

    Hyperhalogens and highly electronegative compositions
    10.
    发明授权
    Hyperhalogens and highly electronegative compositions 有权
    高卤素和高电负性组合物

    公开(公告)号:US09416016B2

    公开(公告)日:2016-08-16

    申请号:US13820574

    申请日:2011-09-08

    摘要: Hyperhalogens, a new class of highly electronegative species, are now invented. A hyperhalogen is a superhalogen-containing composition in which the electron affinity (EA) of the hyperhalogen is even larger than that of the superhalogens they are composed of. Novel production methods are provided in which highly electronegative species are produced by surrounding a central metal atom by superhalogen moieties.

    摘要翻译: 目前,已经发明了一类高度负电荷物种的超卤素。 高卤素是含有超卤素的组合物,其中超卤素的电子亲和力(EA)甚至比它们组成的超级卤素的电子亲和力(EA)更大。 提供了新的制备方法,其中通过用超卤素部分包围中心金属原子来产生高度负电荷的物质。