| Autor: |
Tolkacheva, A. S., Porotnikova, N. M., Farlenkov, A. S., Il'ina, E. A., Konopelko, M. A. |
| Předmět: |
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| Zdroj: |
Refractories & Industrial Ceramics; Nov2021, Vol. 62 Issue 4, p414-420, 7p |
| Abstrakt: |
Pure crystalline phase of alpha lithium aluminate, a state-of-the-art matrix support material, was directly prepared by two nitrates-free methods at 650°C. The sol-gel method included pyrolysis of a colloidal mixture of aluminum hydroxide sol and lithium formate. The advantages of the used formate pyrolysis are the absence of nitrogen oxide emission in comparison to other combustion methods and that it provides high homogeneity of the product. The solid-state reaction is a conventional method used in industry, so the optimal powder-to-ball weight ratio was found in this study to give a high surface area. The described methods of synthesis are easy, economic and low-emission methods for the preparation of submicron α-LiAlO2 powders with a surface area of about 25 – 27 m2/g, which is optimal for application as a matrix material in molten carbonate fuel cells. Ill. 5. Ref. 20. Tab. 1. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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