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    Plasma synthesis of metal oxide nanopowder and apparatus therefor
    2.
    发明申请
    Plasma synthesis of metal oxide nanopowder and apparatus therefor 有权
    金属氧化物纳米粉末的等离子体合成及其设备

    公开(公告)号：US20030143153A1

    公开(公告)日：2003-07-31

    申请号：US10313506

    申请日：2002-12-06

    Applicant: Tekna Plasma Systems, Inc.

    Inventor： Maher I. Boulos ,  Jerzy W. Jurewicz ,  Christine A. Abdel Messih Nessim

    IPC: C01G023/047 ,  B01J019/08

    CPC classification number: B82Y30/00 ,  B01J19/088 ,  B01J19/129 ,  B01J2219/0871 ,  B01J2219/0875 ,  B01J2219/0879 ,  B01J2219/0894 ,  C01B13/30 ,  C01G23/07 ,  C01G23/075 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2004/64 ,  C01P2006/12 ,  C09C1/36 ,  C09C1/3607 ,  C09C1/3669 ,  C22B4/005 ,  C22B4/08 ,  C22B34/129

    Abstract: A process and apparatus for the synthesis of metal oxide nanopowder from a metal compound vapour is presented. In particular a process and apparatus for the synthesis of TiO2 nanopowder from TiCl4 is disclosed. The metal compound vapour is reacted with an oxidizing gas in electrically induced RF frequency plasma thus forming a metal oxide vapour. The metal oxide vapour is rapidly cooled using a highly turbulent gas quench zone which quickly halts the particle growth process, yielding a substantial reduction in the size of metal oxide particles formed compared with known processes. The metal compound vapour can also react with a doping agent to create a doped metal oxide nanopowder. Additionally, a process and apparatus for the inline synthesis of a coated metal oxide is disclosed wherein the metal oxide particles are coated with a surface agent after being cooled in a highly turbulent gas quench zone.

    Abstract translation: 提出了一种从金属化合物蒸气合成金属氧化物纳米粉末的方法和装置。 特别地公开了一种用于从TiCl 4合成TiO 2纳米粉末的方法和装置。 金属化合物蒸汽与电感RF频率等离子体中的氧化气体反应，从而形成金属氧化物蒸气。 使用快速停止颗粒生长过程的高度湍流气体骤冷区快速冷却金属氧化物蒸汽，与已知方法相比，形成金属氧化物颗粒的尺寸显着减小。 金属化合物蒸汽也可以与掺杂剂反应以产生掺杂的金属氧化物纳米粉末。 此外，公开了一种用于在线合成涂覆的金属氧化物的方法和装置，其中在高度湍流的气体骤冷区域中冷却之后，金属氧化物颗粒被表面剂涂覆。

    Process and apparatus for recovering metal oxides from hot gases
    3.
    发明授权
    Process and apparatus for recovering metal oxides from hot gases 失效
    从热气中回收金属氧化物的方法和装置

    公开(公告)号：US3681895A

    公开(公告)日：1972-08-08

    申请号：US3681895D

    申请日：1971-01-15

    Applicant: BAYER AG

    Inventor： ZIRNGIBL HANS ,  JASCHISKI KLEMENS ,  BRANDLE KARL ,  BEUMER PETER ,  WEIDMANN WALTER

    IPC: C01B13/30 ,  B01D45/00

    CPC classification number: C01B13/30

    Abstract: In the recovery of solids such as titanium oxide from the hot gas in which it is produced by reaction of titanium tetrachloride and oxygen, the gas is first cooled to below about 800* C. by mixing with additional gas, it is further cooled by direct heat exchange with liquid flowing down the walls of a converging zone having a taper angle greater than about 7*, the gas flow rate ranging from about 10 to 100 meters per second, and then making the gas pass through a spray of liquid. The resulting product has the gas removed and partially recycled for initial cooling and a part of the liquid suspension of oxide is recycled as the cooling liquid.

    Fumed metal oxide particles and process for producing the same
    4.
    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

    Applicant: Yakov E. Kutsovsky

    Inventor： Yakov E. Kutsovsky

    IPC: C01B33/12

    CPC classification number: B82Y30/00 ,  C01B13/20 ,  C01B13/24 ,  C01B13/30 ,  C01B33/183 ,  C01P2002/60 ,  C01P2004/50 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12

    Abstract: 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.

    Abstract translation: 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。

    Apparatus for plasma synthesis of metal oxide nanopowder
    5.
    发明授权
    Apparatus for plasma synthesis of metal oxide nanopowder 有权
    金属氧化物纳米粉末等离子体合成装置

    公开(公告)号：US07501599B2

    公开(公告)日：2009-03-10

    申请号：US11089961

    申请日：2005-03-25

    Applicant: Maher I. Boulos ,  Jerzy W. Jurewicz ,  Christine A. Abdel Messih Nessim

    Inventor： Maher I. Boulos ,  Jerzy W. Jurewicz ,  Christine A. Abdel Messih Nessim

    IPC: B23K10/00

    CPC classification number: B82Y30/00 ,  B01J19/088 ,  B01J19/129 ,  B01J2219/0871 ,  B01J2219/0875 ,  B01J2219/0879 ,  B01J2219/0894 ,  C01B13/30 ,  C01G23/07 ,  C01G23/075 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2004/64 ,  C01P2006/12 ,  C09C1/36 ,  C09C1/3607 ,  C09C1/3669 ,  C22B4/005 ,  C22B4/08 ,  C22B34/129

    Abstract: A process and apparatus for the synthesis of metal oxide nanopowder from a metal compound vapour is presented. In particular a process and apparatus for the synthesis of TiO2 nanopowder from TiCl4 is disclosed. The metal compound vapour is reacted with an oxidizing gas in electrically induced RF frequency plasma thus forming a metal oxide vapour. The metal oxide vapour is rapidly cooled using a highly turbulent gas quench zone which quickly halts the particle growth process, yielding a substantial reduction in the size of metal oxide particles formed compared with known processes. The metal compound vapour can also react with a doping agent to create a doped metal oxide nanopowder. Additionally, a process and apparatus for the inline synthesis of a coated metal oxide is disclosed wherein the metal oxide particles are coated with a surface agent after being cooled in a highly turbulent gas quench zone.

    Abstract translation: 提出了一种从金属化合物蒸气合成金属氧化物纳米粉末的方法和装置。 特别地公开了一种用于从TiCl 4合成TiO 2纳米粉末的方法和装置。 金属化合物蒸汽与电感RF频率等离子体中的氧化气体反应，从而形成金属氧化物蒸气。 使用快速停止颗粒生长过程的高度湍流气体骤冷区快速冷却金属氧化物蒸汽，与已知方法相比，形成金属氧化物颗粒的尺寸显着减小。 金属化合物蒸汽也可以与掺杂剂反应以产生掺杂的金属氧化物纳米粉末。 此外，公开了一种用于在线合成涂覆的金属氧化物的方法和装置，其中在高度湍流的气体骤冷区域中冷却后，金属氧化物颗粒被表面剂涂覆。

    Fumed metal oxide particles and process for producing the same
    6.
    发明申请
    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：US20040156773A1

    公开(公告)日：2004-08-12

    申请号：US10720582

    申请日：2003-11-24

    Applicant: Cabot Corporation

    Inventor： Yakov E. Kutsovsky

    IPC: C01B033/12

    CPC classification number: B82Y30/00 ,  C01B13/20 ,  C01B13/24 ,  C01B13/30 ,  C01B33/183 ,  C01P2002/60 ,  C01P2004/50 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12

    Abstract: 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.

    Abstract translation: 本发明提供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。

    Plasma synthesis of titanium dioxide nanopowder and powder doping and surface modification process
    9.
    发明申请
    Plasma synthesis of titanium dioxide nanopowder and powder doping and surface modification process 审中-公开
    二氧化钛纳米粉末的等离子体合成和粉末掺杂和表面改性工艺

    公开(公告)号：US20020155059A1

    公开(公告)日：2002-10-24

    申请号：US09840854

    申请日：2001-04-24

    Applicant: Tekna Plasma Systems Inc.

    Inventor： Maher I. Boulos ,  Jerzy W. Jurewicz ,  Christine A. Abdel Messih Nessim

    IPC: C01G023/07 ,  C23C016/00

    CPC classification number: B82Y30/00 ,  B01J19/088 ,  B01J19/129 ,  B01J2219/0871 ,  B01J2219/0875 ,  B01J2219/0879 ,  B01J2219/0894 ,  C01B13/30 ,  C01G23/07 ,  C01G23/075 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2004/64 ,  C01P2006/12 ,  C09C1/36 ,  C09C1/3607 ,  C09C1/3669

    Abstract: A process and apparatus for the synthesis of metal oxide nanopowder from a metal compound vapour is presented. In particular a process and apparatus for the synthesis of TiO2 nanopowder from TiCl4 is disclosed. The metal compound vapour is reacted with an oxidizing gas in an electrically induced RF frequency plasma thus forming a metal oxide vapour. The metal oxide vapour is rapidly cooled using a highly turbulent gas quench zone which quickly halts the particle growth process, yielding a substantial reduction in the size of metal oxide particles formed. The metal compound vapour can also be reacted with a doping agent to create a doped metal oxide nanopowder. Additionally, a process and apparatus for the inline synthesis of a coated metal oxide is disclosed wherein the metal oxide particles are coated with a surface agent after being cooled in a highly turbulent gas quench zone.

    Abstract translation: 提出了一种从金属化合物蒸气合成金属氧化物纳米粉末的方法和装置。 特别地公开了一种用于从TiCl 4合成TiO 2纳米粉末的方法和装置。 金属化合物蒸气与电感应RF频率等离子体中的氧化气体反应，从而形成金属氧化物蒸气。 使用快速停止颗粒生长过程的高度湍流的气体骤冷区，快速冷却金属氧化物蒸汽，从而显着减少形成的金属氧化物颗粒的尺寸。 金属化合物蒸气也可以与掺杂剂反应以产生掺杂的金属氧化物纳米粉末。 此外，公开了一种用于在线合成涂覆的金属氧化物的方法和装置，其中在高度湍流的气体骤冷区域中冷却之后，金属氧化物颗粒被表面剂涂覆。

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