CA2263902A1 - Procede thermique integre et appareil permettant la synthese continue de poudres a l'echelle nanometrique - Google Patents

Procede thermique integre et appareil permettant la synthese continue de poudres a l'echelle nanometrique Download PDF

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Publication number
CA2263902A1
CA2263902A1 CA002263902A CA2263902A CA2263902A1 CA 2263902 A1 CA2263902 A1 CA 2263902A1 CA 002263902 A CA002263902 A CA 002263902A CA 2263902 A CA2263902 A CA 2263902A CA 2263902 A1 CA2263902 A1 CA 2263902A1
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Prior art keywords
internal surface
vapor
produced
powder
quenching
Prior art date
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Abandoned
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CA002263902A
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English (en)
Inventor
Shahid Pirzada
Steven Just
Tapesh Yadav
Bryce Anton
Forrest Bray
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NANOMATERIALS RESEARCH LLC
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Priority claimed from US08/706,819 external-priority patent/US5851507A/en
Priority claimed from US08/707,341 external-priority patent/US5788738A/en
Application filed by NANOMATERIALS RESEARCH LLC filed Critical NANOMATERIALS RESEARCH LLC
Publication of CA2263902A1 publication Critical patent/CA2263902A1/fr
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C01B32/956—Silicon carbide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J12/00—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor
    • B01J12/005—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor carried out at high temperatures, e.g. by pyrolysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J12/00—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor
    • B01J12/02—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor for obtaining at least one reaction product which, at normal temperature, is in the solid state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J19/24—Stationary reactors without moving elements inside
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    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/12—Making metallic powder or suspensions thereof using physical processes starting from gaseous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y5/00—Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
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    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14—Methods for preparing oxides or hydroxides in general
    • C01B13/145—After-treatment of oxides or hydroxides, e.g. pulverising, drying, decreasing the acidity
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    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B19/00—Selenium; Tellurium; Compounds thereof
    • C01B19/007—Tellurides or selenides of metals
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    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C01B21/0615—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with transition metals other than titanium, zirconium or hafnium
    • C01B21/062—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with transition metals other than titanium, zirconium or hafnium with chromium, molybdenum or tungsten
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    • C01B35/00—Boron; Compounds thereof
    • C01B35/02—Boron; Borides
    • C01B35/04—Metal borides
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    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/02—Oxides or hydroxides
    • C01F11/04—Oxides or hydroxides by thermal decomposition
    • C01F11/06—Oxides or hydroxides by thermal decomposition of carbonates
    • C—CHEMISTRY; METALLURGY
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    • C01F17/00—Compounds of rare earth metals
    • C01F17/20—Compounds containing only rare earth metals as the metal element
    • C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
    • C01F17/224—Oxides or hydroxides of lanthanides
    • C01F17/235—Cerium oxides or hydroxides
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    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/10—Preheating, burning calcining or cooling
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets
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    • B01J2219/00051—Controlling the temperature
    • B01J2219/00132—Controlling the temperature using electric heating or cooling elements
    • B01J2219/00135—Electric resistance heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract

L'invention concerne un procédé continu permettant de produire des poudres à l'échelle nanométrique à partir de différents types de matériaux précurseurs en évaporant le matériau et en trempant la phase vaporisée de préférence dans une buse d'expansion convergente-divergente. Le matériau précurseur en suspension dans un gaz vecteur est vaporisé continûment à de très hautes températures, de préférence supérieures à 2000 degrés C, et idéalement supérieures à 5000 degrés K, dans une chambre de réaction thermique dans des conditions favorisant la nucléation de la vapeur résultante. Immédiatement après les étapes de nucléation initiale, le flux de vapeur est rapidement et uniformément trempé à des cadences d'au moins 1,000 K/seconde, de préférence supérieures à 1,000,000 K/seconde, pour bloquer la croissance continue des particules nucléées et pour produire une suspension pulvérulente présentant une taille de l'ordre du nanomètre de répartition granulométrique étroite. La poudre de taille nanométrique est ensuite recueillie par filtration à partir du flux de vapeur trempé et le support est purifié, comprimé et recyclé pour être mélangé à un nouveau matériau précurseur dans le flux d'alimentation.
CA002263902A 1996-09-03 1997-09-03 Procede thermique integre et appareil permettant la synthese continue de poudres a l'echelle nanometrique Abandoned CA2263902A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US08/706,819 US5851507A (en) 1996-09-03 1996-09-03 Integrated thermal process for the continuous synthesis of nanoscale powders
US08/707,341 US5788738A (en) 1996-09-03 1996-09-03 Method of producing nanoscale powders by quenching of vapors
US08/706,819 1996-09-03
US08/707,341 1996-09-03
PCT/US1997/015463 WO1998009753A1 (fr) 1996-09-03 1997-09-03 Procede thermique integre et appareil permettant la synthese continue de poudres a l'echelle nanometrique

Publications (1)

Publication Number Publication Date
CA2263902A1 true CA2263902A1 (fr) 1998-03-12

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Application Number Title Priority Date Filing Date
CA002263902A Abandoned CA2263902A1 (fr) 1996-09-03 1997-09-03 Procede thermique integre et appareil permettant la synthese continue de poudres a l'echelle nanometrique

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CA (1) CA2263902A1 (fr)
WO (1) WO1998009753A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087708A1 (fr) * 2006-01-31 2007-08-09 Mcgill University Nanofluides organiques, procédé et réacteur pour leur synthèse

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6569397B1 (en) * 2000-02-15 2003-05-27 Tapesh Yadav Very high purity fine powders and methods to produce such powders
AU2003291166A1 (en) 2002-11-26 2004-06-18 Cabot Corporation Fumed metal oxide particles and process for producing the same
US8729158B2 (en) 2008-09-05 2014-05-20 Cabot Corporation Fumed silica of controlled aggregate size and processes for manufacturing the same
US8038971B2 (en) * 2008-09-05 2011-10-18 Cabot Corporation Fumed silica of controlled aggregate size and processes for manufacturing the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322810A (en) * 1976-08-16 1978-03-02 Fumio Hori Method and apparatus for producing metal mg or ca by carbon reduction
EP0087798B1 (fr) * 1982-03-01 1987-05-06 Toyota Jidosha Kabushiki Kaisha Procédé et appareil de fabrication d'un composé finement pulvérulent d'un métal et d'un autre élément
US4851262A (en) * 1987-05-27 1989-07-25 Carnegie-Mellon University Method of making carbide, nitride and boride powders
US4892579A (en) * 1988-04-21 1990-01-09 The Dow Chemical Company Process for preparing an amorphous alloy body from mixed crystalline elemental metal powders

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087708A1 (fr) * 2006-01-31 2007-08-09 Mcgill University Nanofluides organiques, procédé et réacteur pour leur synthèse

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