Title:
METHOD FOR PARTIALLY REDUCING VANADIUM PENTOXIDE USING AMMONIA SOLUTION, AND VANADIUM DIOXIDE POWDER PREPARED THEREBY
Document Type and Number:
WIPO Patent Application WO/2023/282565
Kind Code:
A1
Abstract:
The present invention provides: a method for partially reducing vanadium pentoxide (V2O5) using an ammonia solution: wherein ammonia is used to convert vanadium pentoxide (V2O5) powder to ammonia vanadate (NH4VO3), which is an intermediate material, after which the ammonia vanadate is heated under normal or reduced pressure in a nitrogen or argon atmosphere and then maintained for a certain period of time to partially reduce the vanadium pentoxide and thereby produce vanadium dioxide (VO2) powder; and vanadium dioxide (VO2) powder prepared thereby.
Inventors:
KIM BYUNG-SU (KR)
RYU TAEGONG (KR)
CHANG HAN KWON (KR)
CHOI JI-HYUK (KR)
SUH CHANG-YOUL (KR)
YOO JEONGHYUN (KR)
CHO SUNG-WOOK (KR)
PARK TAE JUN (KR)
RYU TAEGONG (KR)
CHANG HAN KWON (KR)
CHOI JI-HYUK (KR)
SUH CHANG-YOUL (KR)
YOO JEONGHYUN (KR)
CHO SUNG-WOOK (KR)
PARK TAE JUN (KR)
Application Number:
PCT/KR2022/009623
Publication Date:
January 12, 2023
Filing Date:
July 04, 2022
Export Citation:
Assignee:
KOREA INST GEOSCIENCE & MINERAL RESOURCES (KR)
International Classes:
C01G31/02; C22C21/00; C22C29/12; H01M8/18
Foreign References:
| JP2003138326A | 2003-05-14 | |||
| JP2004071165A | 2004-03-04 | |||
| CN106967895A | 2017-07-21 | |||
| JPH10509942A | 1998-09-29 | |||
| KR102344756B1 | 2021-12-29 |
Other References:
JI QI, CHEN NIU, YING MEI XU, HUA HAI, LEI ZOU: "Comparison between Vanadium Dioxides Produced by Ammonium Metavanadate and Vanadium Pentoxide", ADVANCED MATERIALS RESEARCH, SCIENTIFIC.NET, CH, vol. 306-307, 1 August 2011 (2011-08-01), CH , pages 234 - 237, XP009542397, ISSN: 1022-6680, DOI: 10.4028/www.scientific.net/AMR.306-307.234
Attorney, Agent or Firm:
DAE-A INTELLECTUAL PROPERTY CONSULTING (KR)
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