BE1002754A3 - Pentoxyde de tantale a haute purete ainsi que procede pour sa preparation. - Google Patents

Pentoxyde de tantale a haute purete ainsi que procede pour sa preparation. Download PDF

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Publication number
BE1002754A3
BE1002754A3 BE9000142A BE9000142A BE1002754A3 BE 1002754 A3 BE1002754 A3 BE 1002754A3 BE 9000142 A BE9000142 A BE 9000142A BE 9000142 A BE9000142 A BE 9000142A BE 1002754 A3 BE1002754 A3 BE 1002754A3
Authority
BE
Belgium
Prior art keywords
preparation
high purity
tantalum pentoxide
purity tantalum
powder
Prior art date
Application number
BE9000142A
Other languages
English (en)
Inventor
Joachim Eckert
Walter Bludssus
Original Assignee
Starck Hermann C Fa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Starck Hermann C Fa filed Critical Starck Hermann C Fa
Application granted granted Critical
Publication of BE1002754A3 publication Critical patent/BE1002754A3/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/06—Solid dielectrics
    • H01G4/08—Inorganic dielectrics
    • H01G4/10—Metal-oxide dielectrics
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G35/00—Compounds of tantalum
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/20—Powder free flowing behaviour
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

Pentoxyde de tantale de haute pureté ainsi qu'un procédé pour sa préparation. La poudre présente une fluidité meilleure que 50 sec (suivant norme ISO 4490/1978) pour un orifice de sortie de 5,08 mm. Selon l'invention, la poudre est obtenue par calcination à 700 - 800 degrés C de l'hydroxyde de tantale précipité par l'ammoniac.
BE9000142A 1989-02-14 1990-02-07 Pentoxyde de tantale a haute purete ainsi que procede pour sa preparation. BE1002754A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3904292A DE3904292A1 (de) 1989-02-14 1989-02-14 Hochreines tantalpentoxid sowie verfahren zu dessen herstellung

Publications (1)

Publication Number Publication Date
BE1002754A3 true BE1002754A3 (fr) 1991-05-28

Family

ID=6373989

Family Applications (1)

Application Number Title Priority Date Filing Date
BE9000142A BE1002754A3 (fr) 1989-02-14 1990-02-07 Pentoxyde de tantale a haute purete ainsi que procede pour sa preparation.

Country Status (7)

Country Link
US (1) US5068097A (fr)
JP (1) JPH02248325A (fr)
AU (1) AU633047B2 (fr)
BE (1) BE1002754A3 (fr)
BR (1) BR9000642A (fr)
DD (1) DD291978A5 (fr)
DE (1) DE3904292A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6338832B1 (en) * 1995-10-12 2002-01-15 Cabot Corporation Process for producing niobium and tantalum compounds
US5635146A (en) * 1995-11-30 1997-06-03 Osram Sylvania Inc. Method for the dissolution and purification of tantalum pentoxide
US5707599A (en) * 1996-02-13 1998-01-13 Santiam Electroactive Materials Process for purifying tantalum oxide and other metal oxides
US6010676A (en) * 1997-09-12 2000-01-04 Osram Sylvania Inc. Method for making a highly pure tantalum compound
US6348113B1 (en) 1998-11-25 2002-02-19 Cabot Corporation High purity tantalum, products containing the same, and methods of making the same
DE10296409B4 (de) * 2001-12-27 2006-06-08 Mitsui Mining & Smelting Co., Ltd. Tantaloxid oder Nioboxid-Pulver und Verfahren zu ihrer Herstellung
JP4202195B2 (ja) * 2003-06-10 2008-12-24 三井金属鉱業株式会社 水酸化タンタル、水酸化ニオブ、酸化タンタル、酸化ニオブ、およびこれらの製造方法
JP4949960B2 (ja) * 2007-07-27 2012-06-13 Ｄｏｗａホールディングス株式会社 酸化タンタルの製造方法
JP2009073675A (ja) * 2007-09-18 2009-04-09 Mitsui Mining & Smelting Co Ltd 金属酸化物粉及びその製造方法
JP5137594B2 (ja) * 2008-01-18 2013-02-06 三井金属鉱業株式会社 酸化タンタル
CN114057227B (zh) * 2021-12-15 2023-09-19 宁夏东方钽业股份有限公司 一种低碳高纯五氧化二钽粉末及其制备方法和用途

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5110197A (en) * 1974-07-16 1976-01-27 Ishihara Sangyo Kaisha Suisankaniobu mataha suisankatantaruno seizohoho
JPS6296319A (ja) * 1985-07-26 1987-05-02 Natl Inst For Res In Inorg Mater Ｔａ↓２Ｏ↓５・ｎＨ↓２Ｏ粒子の製造方法
DE3919187A1 (de) * 1988-06-13 1989-12-14 Central Glass Co Ltd Verfahren zur reinigung von uebergangsmetalle enthaltenden hydroxiden von niob und tantal

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018036B (de) * 1955-10-25 1957-10-24 Elektrometallurgie M B H Ges Verfahren zur Gewinnung von reinen Tantal- und/oder Niobverbindungen
US2950966A (en) * 1958-06-20 1960-08-30 Nat Distillers Chem Corp Recovery of tantalum values
US3909241A (en) * 1973-12-17 1975-09-30 Gte Sylvania Inc Process for producing free flowing powder and product
JPS5815032A (ja) * 1981-07-17 1983-01-28 Toshiba Corp 五酸化タンタルの製造装置
DE3428788C2 (de) * 1983-08-11 1986-07-10 Günter J. 8510 Fürth Bauer Verfahren zum kontinuierlichen Herstellen von fluoridarmen Tantal- oder Niob-Pentoxiden
US4661423A (en) * 1984-02-01 1987-04-28 Tokyo Shibaura Denki Kabushiki Kaisha Fuel cell electrolyte matrix and method for manufacturing the same
US4861747A (en) * 1984-06-29 1989-08-29 Exxon Research And Engineering Company Catalysts comprising ruthenium on titania surface modified with group VA oxide of vanadium, niobium or tantalum
JPS61146717A (ja) * 1984-12-18 1986-07-04 Sumitomo Chem Co Ltd タンタルの精製方法
US4741894A (en) * 1986-06-03 1988-05-03 Morton Thiokol, Inc. Method of producing halide-free metal and hydroxides
JPS63156013A (ja) * 1986-12-17 1988-06-29 Sumitomo Chem Co Ltd 金属化合物中に含有された微量フツ素の除去方法
JPH01176226A (ja) * 1987-12-28 1989-07-12 Central Glass Co Ltd 酸化ニオブまたは酸化タンタルの改質方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5110197A (en) * 1974-07-16 1976-01-27 Ishihara Sangyo Kaisha Suisankaniobu mataha suisankatantaruno seizohoho
JPS6296319A (ja) * 1985-07-26 1987-05-02 Natl Inst For Res In Inorg Mater Ｔａ↓２Ｏ↓５・ｎＨ↓２Ｏ粒子の製造方法
DE3919187A1 (de) * 1988-06-13 1989-12-14 Central Glass Co Ltd Verfahren zur reinigung von uebergangsmetalle enthaltenden hydroxiden von niob und tantal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 307 (C-450)[2754], 7 octobre 1987; & JP-A-62 96 319 (NATL. INST. FOR RES. IN INORG. MATER.) 02-05-1987 *

Also Published As

Publication number Publication date
BR9000642A (pt) 1991-01-15
AU4978590A (en) 1990-08-23
DE3904292C2 (fr) 1991-01-17
US5068097A (en) 1991-11-26
DD291978A5 (de) 1991-07-18
AU633047B2 (en) 1993-01-21
JPH02248325A (ja) 1990-10-04
DE3904292A1 (de) 1990-08-16

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Effective date: 20060228