| Autor: |
Jaworskagalas, Z., Mista, W., Wrzyszcz, J., Zawadzki, M., Machnikowski, J. |
| Zdroj: |
Journal of Catalysis; February 1994, Vol. 145 Issue: 2 p450-455, 6p |
| Abstrakt: |
Transition aluminum oxides with increased thermal stability were obtained by placing dispersed aluminum hydroxides in a carbon matrix, their particles being respectively quasispheroidal and fibrous, and holding at a temperature of 2000 K in an argon atmosphere for 30 min; afterwards, the carbon phase was burned in air at 1073 K. Subsequent calcination in air showed that the specimens of Al2O3 still consisted of the fibrous and quasi-spheroidal particles and that their increased specific surface was conserved. Simultaneously, a delay in the phase transitions to corundum and stabilization of the δ-Al2O3 phase at 1473 K was observed.Copyright 1994, 1999 Academic Press |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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