Invention Grant
- Patent Title: Valve metal oxide powders and process for the production thereof
- Patent Title (中): 阀门金属氧化物粉末及其生产方法
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Application No.: US10571153Application Date: 2004-08-31
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Publication No.: US07674450B2Publication Date: 2010-03-09
- Inventor: Karsten Beck , Hady Seyeda , Klaus Lerch , Bianca Agnes Balan
- Applicant: Karsten Beck , Hady Seyeda , Klaus Lerch , Bianca Agnes Balan
- Applicant Address: DE
- Assignee: H. C. Starck GmbH
- Current Assignee: H. C. Starck GmbH
- Current Assignee Address: DE
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: DE10342600 20030912
- International Application: PCT/EP2004/009674 WO 20040831
- International Announcement: WO2005/028367 WO 20050331
- Main IPC: C01G23/047
- IPC: C01G23/047 ; C01G25/02 ; C01G33/00 ; C01G35/00 ; C01G41/02
Abstract:
A process for the production of a valve metal oxide powder, in particular an Nb2O5 or Ta2O5 powder by continuous reaction of a fluoride-containing valve metal compound with a base in the presence of water and calcination of the resultant product, wherein the reaction is performed in just one reaction vessel and at a temperature of at least 45° C. Valve metal oxide powders obtainable in said manner which exhibit a spherical morphology, a D50 value of 10 to 80 μm and an elevated BET surface area.
Public/Granted literature
- US20080025912A1 Valve Metal Oxide Powders And Process For The Production Thereof Public/Granted day:2008-01-31
Information query
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