GB2421945A - A process for the production of niobium oxide power for use in capacitors - Google Patents
A process for the production of niobium oxide power for use in capacitors Download PDFInfo
- Publication number
- GB2421945A GB2421945A GB0605986A GB0605986A GB2421945A GB 2421945 A GB2421945 A GB 2421945A GB 0605986 A GB0605986 A GB 0605986A GB 0605986 A GB0605986 A GB 0605986A GB 2421945 A GB2421945 A GB 2421945A
- Authority
- GB
- United Kingdom
- Prior art keywords
- niobium
- nbo
- capacitors
- production
- nbo2
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title abstract 4
- 239000003990 capacitor Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 229910000484 niobium oxide Inorganic materials 0.000 title abstract 3
- BFRGSJVXBIWTCF-UHFFFAOYSA-N niobium monoxide Chemical compound [Nb]=O BFRGSJVXBIWTCF-UHFFFAOYSA-N 0.000 abstract 16
- HFLAMWCKUFHSAZ-UHFFFAOYSA-N niobium dioxide Chemical compound O=[Nb]=O HFLAMWCKUFHSAZ-UHFFFAOYSA-N 0.000 abstract 5
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 abstract 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 125000004430 oxygen atom Chemical group O* 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G33/00—Compounds of niobium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/052—Sintered electrodes
- H01G9/0525—Powder therefor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- 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
- C01P2006/14—Pore volume
-
- 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
- C01P2006/40—Electric properties
-
- 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)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention is related to a process for the production of a powder of niobium monoxide (NbO) having a high purity, large specific surface area, controlled oxygen and nitrogen contents and a morphology adequate for use in the manufacture of capacitors, characterized by comprising two niobium pentoxide (Nb2O5) reduction steps, the first step comprising reducing, by hydrogen, the niobium pentoxide (Nb2O5) to niobium dioxide (NbO2), and the second step comprising reducing niobium dioxide (NbO2) to niobium monoxide (NbO), by using an oxygen getter material in a convenient atmosphere which permits the transfer of oxygen atoms from the niobium oxide (NbO2) to the getter material, under adequate conditions of time and temperature to form niobium monoxide (NbO). The particles of powder of niobium monoxide (NbO) produced using the instant process are small, have a large surface area and an appropriate morphology, and are adequate for the production of capacitors.
Description
GB 2421945 A continuation (71) cont IPT-Instituto De PesquisasTecnologicas
Do Estado De Sao Paulo, S/A (Incorporated in Brazil) Cidade Universitaria, "Armando de Salles Oliveira", 05508-901 SAO PAULO, SP, Brazil (72) Inventor(s): Solon Yasuhiko Tagusagawa Alberto Akikazu Ono Flávio Neto Beneduce Joâo Batista Neto Ferreira (74) Agent and/or Address for Service: Page White & Farrer 54 Doughty Street, LONDON, WC1N 2L5, United Kingdom
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0304252-9A BR0304252B1 (en) | 2003-09-25 | 2003-09-25 | production process of niobium monoxide powder, niobium monoxide, and capacitor. |
PCT/BR2004/000003 WO2005028370A1 (en) | 2003-09-25 | 2004-01-23 | A process for the production of niobium oxide power for use in capacitors |
Publications (2)
Publication Number | Publication Date |
---|---|
GB0605986D0 GB0605986D0 (en) | 2006-05-03 |
GB2421945A true GB2421945A (en) | 2006-07-12 |
Family
ID=34318717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0605986A Withdrawn GB2421945A (en) | 2003-09-25 | 2004-01-23 | A process for the production of niobium oxide power for use in capacitors |
Country Status (6)
Country | Link |
---|---|
JP (1) | JP2007506634A (en) |
CN (1) | CN1856446A (en) |
BR (1) | BR0304252B1 (en) |
DE (1) | DE112004001796T5 (en) |
GB (1) | GB2421945A (en) |
WO (1) | WO2005028370A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2609231C (en) * | 2005-06-03 | 2014-07-15 | H.C. Starck Gmbh | Niobium suboxides |
JPWO2008001774A1 (en) * | 2006-06-26 | 2009-11-26 | 三井金属鉱業株式会社 | Niobium oxide production method and niobium monoxide |
JP5046572B2 (en) * | 2006-06-26 | 2012-10-10 | 三井金属鉱業株式会社 | Niobium monoxide |
BRPI0814081A2 (en) * | 2007-07-18 | 2015-02-03 | Cabot Corp | HIGH VOLTAGE NIOBIDE OXIDES AND CAPACITORS CONTAINING THE SAME |
CN100577574C (en) | 2007-08-25 | 2010-01-06 | 宁夏东方钽业股份有限公司 | Method for preparing low chemical valence niobium oxide or niobium powder |
CN108046323B (en) * | 2017-12-20 | 2019-08-02 | 广东省稀有金属研究所 | A kind of preparation method of niobium oxide |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6391275B1 (en) * | 1998-09-16 | 2002-05-21 | Cabot Corporation | Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides |
US6416730B1 (en) * | 1998-09-16 | 2002-07-09 | Cabot Corporation | Methods to partially reduce a niobium metal oxide oxygen reduced niobium oxides |
US20030104923A1 (en) * | 2001-05-15 | 2003-06-05 | Showa Denko K.K. | Niobium oxide powder, niobium oxide sintered body and capacitor using the sintered body |
WO2004042095A1 (en) * | 2002-11-04 | 2004-05-21 | Companhia Brasileira De Metalurgia E Mineração - Cbmm | A process for the production of niobium and/or tantalum powder with large surface area |
-
2003
- 2003-09-25 BR BRPI0304252-9A patent/BR0304252B1/en not_active IP Right Cessation
-
2004
- 2004-01-23 JP JP2006527231A patent/JP2007506634A/en active Pending
- 2004-01-23 GB GB0605986A patent/GB2421945A/en not_active Withdrawn
- 2004-01-23 WO PCT/BR2004/000003 patent/WO2005028370A1/en active Application Filing
- 2004-01-23 CN CNA2004800277767A patent/CN1856446A/en active Pending
- 2004-01-23 DE DE112004001796T patent/DE112004001796T5/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6391275B1 (en) * | 1998-09-16 | 2002-05-21 | Cabot Corporation | Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides |
US6416730B1 (en) * | 1998-09-16 | 2002-07-09 | Cabot Corporation | Methods to partially reduce a niobium metal oxide oxygen reduced niobium oxides |
US20030104923A1 (en) * | 2001-05-15 | 2003-06-05 | Showa Denko K.K. | Niobium oxide powder, niobium oxide sintered body and capacitor using the sintered body |
WO2004042095A1 (en) * | 2002-11-04 | 2004-05-21 | Companhia Brasileira De Metalurgia E Mineração - Cbmm | A process for the production of niobium and/or tantalum powder with large surface area |
Also Published As
Publication number | Publication date |
---|---|
CN1856446A (en) | 2006-11-01 |
DE112004001796T5 (en) | 2006-09-07 |
JP2007506634A (en) | 2007-03-22 |
GB0605986D0 (en) | 2006-05-03 |
BR0304252A (en) | 2005-05-31 |
WO2005028370A1 (en) | 2005-03-31 |
BR0304252B1 (en) | 2013-05-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |