Electrical and optical properties of novel conductive oxides derived by reduction of lithium borates.

2015 Fiscal Year Final Research Report

• Project/Area Number: 25410244
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic industrial materials
• Research Institution: Kanazawa Institute of Technology
• Principal Investigator: Tsuyumoto Isao 金沢工業大学, バイオ・化学部, 教授 (60282571)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 還元 / ホウ酸 / フラックス / 鉄 / 酸化鉄 / 分離 / 固溶体

Outline of Final Research Achievements

We found that hydrogen reduction of trace amount of iron or cobalt oxide contained as a solid solution in aluminosilicate was enhanced by adding sodium borate as a flux and that iron or cobalt metal was easily deposited on the surface. Iron with metallic luster was deposited by heating aluminosilicate containing 0.50 wt% of iron as a solid solution in hydrogen at 950°C with a sodium borate (3Na2O・B2O3) flux. Furthermore, it was suggested that cobalt and indium could be also separated by the reduction according to the thermodynamic control. It is expected our findings will lead to the separation of rare metals from industrial wastes and low-temperature refining process of high melting metals.

Free Research Field

無機材料化学