Production of silicon through a closed-loop process
    1.
    发明授权
    Production of silicon through a closed-loop process 有权
    通过闭环工艺生产硅

    公开(公告)号:US07780938B2

    公开(公告)日:2010-08-24

    申请号:US11735234

    申请日:2007-04-13

    CPC分类号: C01B33/035 C01B33/03

    摘要: The inventive method of producing silicon comprises reacting gaseous trichlorosilane with hydrogen to deposit silicon onto a substrate and to produce silicon tetrachloride by-product, vaporizing the silicon tetrachloride by-product to form gaseous silicon tetrachloride, converting the gaseous silicon tetrachloride to finely divided silicon, forming a silicon melt by melting the finely divided silicon, and forming solid silicon from the silicon melt.

    摘要翻译: 制造硅的本发明方法包括使气态三氯硅烷与氢气反应以将硅沉积到基底上并产生四氯化硅副产物,蒸发四氯化硅副产物以形成气态四氯化硅,将气态四氯化硅转化成细分散的硅, 通过熔化细碎硅而形成硅熔体,并从硅熔体形成固体硅。

    Fumed silica of controlled aggregate size and processes for manufacturing the same
    3.
    发明授权
    Fumed silica of controlled aggregate size and processes for manufacturing the same 有权
    受控骨料尺寸的煅制二氧化硅及其制造方法

    公开(公告)号:US08038971B2

    公开(公告)日:2011-10-18

    申请号:US12205643

    申请日:2008-09-05

    IPC分类号: C01B33/18 C01B33/14

    摘要: The invention provides fumed silica comprising aggregates that have an aggregate size and a surface area that satisfy particular formulas relating aggregate size to surface area, as well as aggregates that exhibit particular viscosity, power law exponent index, and/or elastic modulus characteristics when dispersed in liquid media. The invention also provides processes of preparing such fumed silica by combining a silica precursor with a stream of combustible gas, combusting the stream, and producing a stream of combusted gas and fumed silica particles, wherein dopants are introduced, the time/temperature profile, or history, of the stream of combusted gas and fumed silica particles is adjusted to allow for post-quench aggregate growth, and/or additional silica precursor is introduced into the stream of combusted gas.

    摘要翻译: 本发明提供的热解法二氧化硅包括具有聚集体尺寸和表面积的聚集体,所述聚集体尺寸和表面积满足关于聚集体尺寸与表面积的特定公式,以及在分散时显示特定粘度,幂律指数指数和/或弹性模量特性的聚集体 液体介质。 本发明还提供了通过将二氧化硅前体与可燃性气体流合并,燃烧该物流并产生一种燃烧气体和煅制二氧化硅颗粒的方法,其中引入了掺杂剂,时间/温度曲线或 调节燃烧气体流和气相二氧化硅颗粒的历史以允许后淬火聚集体生长,和/或将另外的二氧化硅前体引入燃烧气体流中。

    FUMED SILICA OF CONTROLLED AGGREGATE SIZE AND PROCESSES FOR MANUFACTURING THE SAME
    4.
    发明申请
    FUMED SILICA OF CONTROLLED AGGREGATE SIZE AND PROCESSES FOR MANUFACTURING THE SAME 有权
    受控聚集体的二氧化硅及其制造方法

    公开(公告)号:US20110204283A1

    公开(公告)日:2011-08-25

    申请号:US13041100

    申请日:2011-03-04

    IPC分类号: C09C1/28 C09K3/14 C09K13/00

    摘要: The invention provides fumed silica comprising aggregates that have an aggregate size and a surface area that satisfy particular formulas relating aggregate size to surface area, as well as aggregates that exhibit particular viscosity, power law exponent index, and/or elastic modulus characteristics when dispersed in liquid media. The invention also provides processes of preparing such fumed silica by combining a silica precursor with a stream of combustible gas, combusting the stream, and producing a stream of combusted gas and fumed silica particles, wherein dopants are introduced, the time/temperature profile, or history, of the stream of combusted gas and fumed silica particles is adjusted to allow for post-quench aggregate growth, and/or additional silica precursor is introduced into the stream of combusted gas.

    摘要翻译: 本发明提供的热解法二氧化硅包括具有聚集体尺寸和表面积的聚集体,所述聚集体尺寸和表面积满足关于聚集体尺寸与表面积的特定公式,以及在分散时显示特定粘度,幂律指数指数和/或弹性模量特性的聚集体 液体介质。 本发明还提供了通过将二氧化硅前体与可燃性气体流合并,燃烧该物流并产生一种燃烧气体和煅制二氧化硅颗粒的方法,其中引入了掺杂剂,时间/温度曲线或 调节燃烧气体流和气相二氧化硅颗粒的历史以允许后淬火聚集体生长,和/或将另外的二氧化硅前体引入燃烧气体流中。

    Fumed silica of controlled aggregate size and processes for manufacturing the same
    5.
    发明授权
    Fumed silica of controlled aggregate size and processes for manufacturing the same 有权
    受控骨料尺寸的煅制二氧化硅及其制造方法

    公开(公告)号:US08729158B2

    公开(公告)日:2014-05-20

    申请号:US13041100

    申请日:2011-03-04

    IPC分类号: C08L63/00 C01B33/12

    摘要: The invention provides fumed silica comprising aggregates that have an aggregate size and a surface area that satisfy particular formulas relating aggregate size to surface area, as well as aggregates that exhibit particular viscosity, power law exponent index, and/or elastic modulus characteristics when dispersed in liquid media. The invention also provides processes of preparing such fumed silica by combining a silica precursor with a stream of combustible gas, combusting the stream, and producing a stream of combusted gas and fumed silica particles, wherein dopants are introduced, the time/temperature profile, or history, of the stream of combusted gas and fumed silica particles is adjusted to allow for post-quench aggregate growth, and/or additional silica precursor is introduced into the stream of combusted gas.

    摘要翻译: 本发明提供的热解法二氧化硅包括具有聚集体尺寸和表面积的聚集体,所述聚集体尺寸和表面积满足关于聚集体尺寸与表面积的特定公式,以及在分散时显示特定粘度,幂律指数指数和/或弹性模量特性的聚集体 液体介质。 本发明还提供了通过将二氧化硅前体与可燃性气体流合并,燃烧该物流并产生一种燃烧气体和煅制二氧化硅颗粒的方法,其中引入了掺杂剂,时间/温度曲线或 调节燃烧气体流和气相二氧化硅颗粒的历史以允许后淬火聚集体生长,和/或将另外的二氧化硅前体引入燃烧气体流中。

    Process for the production of fumed silica
    7.
    发明授权
    Process for the production of fumed silica 有权
    生产热解法二氧化硅的方法

    公开(公告)号:US07910081B2

    公开(公告)日:2011-03-22

    申请号:US11740134

    申请日:2007-04-25

    IPC分类号: C01B33/12

    CPC分类号: C01B33/183

    摘要: The invention provides a process for the production of fumed silica. The process comprises providing a silicon halide feedstock comprising about 80% to 100% methyltrichlorosilane, combining the silicon halide feedstock with hydrogen gas and oxygen gas to form a reactant mixture, discharging the reactant mixture out of a burner, and combusting the hydrogen gas and the oxygen gas of the reactant mixture so as to hydrolyze the silicon halide feedstock to produce fumed silica. Hydrogen (H2) is present in a mole fraction of about 0.11 or less based on the reactant mixture, and/or the velocity of the reactant mixture upon exiting the burner is about 25 m/s or more.

    摘要翻译: 本发明提供一种生产热解二氧化硅的方法。 该方法包括提供包含约80%至100%甲基三氯硅烷的卤化硅原料,将卤化硅原料与氢气和氧气组合以形成反应物混合物,将反应物混合物排出燃烧器,并将氢气和 氧化反应混合物的氧气,以便将卤化硅原料水解以产生热解二氧化硅。 基于反应物混合物,氢(H 2)以约0.11或更低的摩尔分数存在,和/或离开燃烧器时反应物混合物的速度为约25m / s或更高。

    Method of preparing an aggregate metal oxide particle dispersion having a desired aggregate particle diameter
    8.
    发明授权
    Method of preparing an aggregate metal oxide particle dispersion having a desired aggregate particle diameter 有权
    制备具有所需骨料粒径的聚集体金属氧化物颗粒分散体的方法

    公开(公告)号:US07584910B2

    公开(公告)日:2009-09-08

    申请号:US11121591

    申请日:2005-05-04

    IPC分类号: B02C19/00

    摘要: A method of preparing a dispersion of aggregate metal oxide particles having a pre-selected average aggregate particle diameter comprising pre-selecting a desired percent-reduction in the average aggregate particle diameter of the metal oxide particles, providing a dispersion standard pertaining to a dispersion of the aggregate metal oxide particles, wherein the dispersion standard correlates (i) the solids concentration of the dispersion with (ii) the percent-reduction in the aggregate particle diameter of the aggregate metal oxide particles that occurs when the dispersion is milled in a high-shear mixer, and preparing and milling a dispersion of the aggregate metal oxide particles in a high-shear milling device at a solids concentration that is within 10% of the solids concentration determined by the standard to provide a dispersion of aggregate metal oxide particles having the desired average aggregate particle diameter. Also provided is a method for reducing the average aggregate particle diameter of aggregate metal oxide particles, and a dispersion prepared by the method.

    摘要翻译: 一种制备具有预选择的平均聚集体粒径的聚集体金属氧化物颗粒的分散体的方法,包括预先选择金属氧化物颗粒的平均聚集体粒径所需的百分比减少,提供与分散体相关的分散体标准 聚合物金属氧化物颗粒,其中分散体标准物将(i)分散体的固体浓度与(ii)在高分散体中研磨分散体时发生的聚集体金属氧化物颗粒的聚集体颗粒直径的百分比降低相关联, 剪切混合器,并且以高剪切研磨装置制备和研磨聚集体金属氧化物颗粒的分散体,其固体浓度在由标准测定的固体浓度的10%内,以提供具有 所需的平均聚集体粒径。 还提供了降低聚集体金属氧化物颗粒的平均聚集体粒径的方法和通过该方法制备的分散体。

    Fumed metal oxide particles and process for producing the same
    9.
    发明授权
    Fumed metal oxide particles and process for producing the same 有权
    热解金属氧化物颗粒及其制备方法

    公开(公告)号:US07572423B2

    公开(公告)日:2009-08-11

    申请号:US10720582

    申请日:2003-11-24

    IPC分类号: C01B33/12

    摘要: The invention provides a process for producing fumed metal oxide particles comprising providing a stream of a liquid feedstock comprising a volatizable, non-halogenated metal oxide precursor, providing a stream of a combustion gas having a linear velocity sufficient to atomize and combust or pyrolyze the liquid feedstock, and injecting the stream of the liquid feedstock into the stream of combustion gas to form a reaction mixture such that the liquid feedstock is atomized and subjected to a sufficient temperature and residence time in the combination gas stream for fumed metal oxide particles to form before the combustion gas temperature is reduced below the solidifying temperature of the metal oxide particle. The invention further provides fumed silica particles having a relatively small aggregate size and/or narrow aggregate size distribution.

    摘要翻译: 本发明提供了一种生产热解金属氧化物颗粒的方法,包括提供包含可挥发的非卤化金属氧化物前体的液体原料流,提供具有足以雾化和燃烧或热解液体的线速度的燃烧气体流 原料,并将液体原料流注入到燃烧气体流中以形成反应混合物,使得液体原料被雾化并且在用于热解金属氧化物颗粒的组合气流中进行足够的温度和停留时间以形成在 燃烧气体温度降低到低于金属氧化物颗粒的凝固温度。 本发明还提供了具有相对较小的聚集体尺寸和/或窄的聚集体尺寸分布的热解二氧化硅颗粒。