公开(公告)号：US20070130656A1

公开(公告)日：2007-06-07

申请号：US10569916

申请日：2004-08-19

Applicant: Maher Boulos ,  Christine Nessim ,  Christian Normand ,  Jerzy Jurewicz

Inventor： Maher Boulos ,  Christine Nessim ,  Christian Normand ,  Jerzy Jurewicz

IPC: B01J8/02

CPC classification number: B01J19/088 ,  B01J2/04 ,  B01J19/10 ,  B01J2219/0869 ,  B01J2219/0871 ,  B01J2219/0877 ,  B01J2219/0879 ,  B01J2219/0898 ,  B22F1/0081 ,  B22F2998/00 ,  B22F1/0018

Abstract: The invention concerns a process for the spheroidisation, densification and purification of powders through the combined action of plasma processing, and ultra-sound treatment of the plasma-processed powder. The ultra-sound treatment allows for the separation of the nanosized condensed powder, referred to as ‘soot’, from the plasma melted and partially vaporized powder. The process can also be used for the synthesis of nanopowders through the partial vaporization of the feed material, followed by the rapid condensation of the formed vapour cloud giving rise to the formation of a fine aerosol of nanopowder. In the latter case, the ultra-sound treatment step serves for the separation of the formed nanopowder form the partially vaporized feed material.

Abstract translation: 本发明涉及通过等离子体处理和等离子体处理的粉末的超声处理的组合作用，粉末的球化，致密化和净化的方法。 超声处理允许从等离子体熔融和部分蒸发的粉末中分离被称为“烟灰”的纳米级浓缩粉末。 该方法也可用于通过进料的部分蒸发来合成纳米粉末，随后形成的蒸汽云的快速冷凝导致形成纳米粉末的细小气溶胶。 在后一种情况下，超声处理步骤用于分离形成的部分蒸发的进料的纳米粉末。

公开(公告)号：US20050217421A1

公开(公告)日：2005-10-06

申请号：US11089961

申请日：2005-03-25

Applicant: Maher Boulos ,  Jerzy Jurewicz ,  Christine Nessim

Inventor： Maher Boulos ,  Jerzy Jurewicz ,  Christine Nessim

IPC: C01B13/14 ,  B01J19/08 ,  B01J19/12 ,  C01B13/20 ,  C01B13/22 ,  C01B13/28 ,  C01B13/30 ,  C01G23/07 ,  C09C1/36 ,  C22B4/00 ,  C22B4/08 ,  C22B34/12

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。

公开(公告)号：US07572315B2

公开(公告)日：2009-08-11

申请号：US10569916

申请日：2004-08-19

Applicant: Maher I. Boulos ,  Christine Nessim ,  Christian Normand ,  Jerzy Jurewicz

Inventor： Maher I. Boulos ,  Christine Nessim ,  Christian Normand ,  Jerzy Jurewicz

IPC: B22F9/14

CPC classification number: B01J19/088 ,  B01J2/04 ,  B01J19/10 ,  B01J2219/0869 ,  B01J2219/0871 ,  B01J2219/0877 ,  B01J2219/0879 ,  B01J2219/0898 ,  B22F1/0081 ,  B22F2998/00 ,  B22F1/0018

Abstract: The invention concerns a process for the spheroidisation, densification and purification of powders through the combined action of plasma processing, and ultra-sound treatment of the plasma-processed powder. The ultra-sound treatment allows for the separation of the nanosized condensed powder, referred to as ‘soot’, from the plasma melted and partially vaporized powder. The process can also be used for the synthesis of nanopowders through the partial vaporization of the feed material, followed by the rapid condensation of the formed vapour cloud giving rise to the formation of a fine aerosol of nanopowder. In the latter case, the ultra-sound treatment step serves for the separation of the formed nanopowder form the partially vaporized feed material.

Abstract translation: 本发明涉及通过等离子体处理和等离子体处理的粉末的超声处理的组合作用，粉末的球化，致密化和净化的方法。 超声处理允许从等离子体熔融和部分蒸发的粉末中分离被称为“烟灰”的纳米级浓缩粉末。 该方法也可用于通过进料的部分蒸发来合成纳米粉末，随后形成的蒸汽云的快速冷凝导致形成纳米粉末的细小气溶胶。 在后一种情况下，超声处理步骤用于分离形成的部分蒸发的进料的纳米粉末。

公开(公告)号：US20080145553A1

公开(公告)日：2008-06-19

申请号：US11831654

申请日：2007-07-31

Applicant: Maher I. Boulos ,  Ulrich Kogelschatz ,  Christine Nessim

Inventor： Maher I. Boulos ,  Ulrich Kogelschatz ,  Christine Nessim

IPC: C23C4/04 ,  B05B5/025

CPC classification number: B05D3/141 ,  B01J19/088 ,  B01J2219/0809 ,  B01J2219/083 ,  B01J2219/0841 ,  B01J2219/0869 ,  B01J2219/0879 ,  B01J2219/0896 ,  B05D1/62 ,  B05D3/144 ,  B05D7/14 ,  C23C16/4417 ,  H05H1/2406 ,  H05H2001/2456 ,  H05H2001/2462

Abstract: A process for the in-flight surface treatment of powders using a Dielectric Barrier Discharge Torch operating at atmospheric pressures or soft vacuum conditions is described herein. The process comprising feeding a powder material into the Dielectric Barrier Discharge Torch yielding powder particles exhibiting a reduced powder agglomeration feature; in-flight modifying the surface properties of the particles; and collecting coated powder particles. An apparatus for surface treating micro- and nanoparticles comprising a Dielectric Barrier Discharge Torch operating at atmospheric pressure or soft vacuum conditions is also described herein.

Abstract translation: 本文描述了使用在大气压或软真空条件下操作的介质阻挡放电火炬进行粉末飞行表面处理的方法。 该方法包括将粉末材料进料到介质阻挡放电火炬中，产生具有降低的粉末附聚特征的粉末颗粒; 飞行中改变颗粒的表面性质; 并收集涂覆的粉末颗粒。 本文还描述了一种用于表面处理包括在常压或软真空条件下操作的介质阻挡放电火炬的微纳米颗粒和纳米颗粒的设备。

公开(公告)号：US08263178B2

公开(公告)日：2012-09-11

申请号：US11831654

申请日：2007-07-31

Applicant: Maher I. Boulos ,  Ulrich Kogelschatz ,  Christine Nessim

Inventor： Maher I. Boulos ,  Ulrich Kogelschatz ,  Christine Nessim

IPC: B05D5/00 ,  H05H1/24 ,  H05H1/02 ,  C23C16/00 ,  H01J7/24 ,  H05B31/20

CPC classification number: B05D3/141 ,  B01J19/088 ,  B01J2219/0809 ,  B01J2219/083 ,  B01J2219/0841 ,  B01J2219/0869 ,  B01J2219/0879 ,  B01J2219/0896 ,  B05D1/62 ,  B05D3/144 ,  B05D7/14 ,  C23C16/4417 ,  H05H1/2406 ,  H05H2001/2456 ,  H05H2001/2462

Abstract: A process for the in-flight surface treatment of powders using a Dielectric Barrier Discharge Torch operating at atmospheric pressures or soft vacuum conditions is described herein. The process comprising feeding a powder material into the Dielectric Barrier Discharge Torch yielding powder particles exhibiting a reduced powder agglomeration feature; in-flight modifying the surface properties of the particles; and collecting coated powder particles. An apparatus for surface treating micro- and nanoparticles comprising a Dielectric Barrier Discharge Torch operating at atmospheric pressure or soft vacuum conditions is also described herein.

Abstract translation: 本文描述了使用在大气压或软真空条件下操作的介质阻挡放电火炬进行粉末飞行表面处理的方法。 该方法包括将粉末材料进料到介质阻挡放电火炬中，产生具有降低的粉末附聚特征的粉末颗粒; 飞行中改变颗粒的表面性质; 并收集涂覆的粉末颗粒。 本文还描述了一种用于表面处理包括在常压或软真空条件下操作的介质阻挡放电火炬的微纳米颗粒和纳米颗粒的设备。