Title:
VANADIUM OXIDE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2015/151353
Kind Code:
A1
Abstract:
This invention provides a method for manufacturing vanadium oxide. Said method includes a temperature-raising step (1) in which a feedstock containing at least one oxide of vanadium having a valence of 2 to 5 and, as desired, at least one oxide of M (M being selected from among tungsten, tantalum, molybdenum, and niobium) is heated to a temperature between 850°C and 1,200°C, inclusive, and a temperature-holding step (2) in which the feedstock is held at the temperature that the feedstock is at after the temperature-raising step. During the temperature-raising step, the partial pressure of oxygen at 800°C is less than or equal to 1×10-11 MPa, and during at least part of the temperature-holding step, the partial pressure of oxygen is between 1×10-7 and 1×10-10 MPa, inclusive. This invention makes it possible to stably manufacture large amounts of a vanadium oxide that can absorb a large amount of heat.
Inventors:
HIROSE SAKYO (JP)
Application Number:
PCT/JP2014/083706
Publication Date:
October 08, 2015
Filing Date:
December 19, 2014
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
C01G31/02; C01G31/00; C09K5/08
Foreign References:
| JP2002187720A | 2002-07-05 |
Other References:
Y. ZHANG ET AL.: "Facile synthesis, phase transition, optical switching and oxidation resistance properties of belt-like VO2(A) and VO2(M) with a rectangular cross section", MATERIALS RESEARCH BULLETIN, vol. 47, no. 8, 16 April 2012 (2012-04-16), pages 1978 - 1986, XP028511982, ISSN: 0025-5408
J. QI ET AL.: "Synthesis, characterization, and thermodynamic parameters of vanadium dioxide", MATERIALS RESEARCH BULLETIN, vol. 43, no. 8-9, 10 August 2007 (2007-08-10), pages 2300 - 2307, XP022717576, ISSN: 0025-5408
J. QI ET AL.: "Synthesis, characterization, and thermodynamic parameters of vanadium dioxide", MATERIALS RESEARCH BULLETIN, vol. 43, no. 8-9, 10 August 2007 (2007-08-10), pages 2300 - 2307, XP022717576, ISSN: 0025-5408
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
Mutsumi Sameshima (JP)
Mutsumi Sameshima (JP)
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