| Autor: |
Sato, Toshiyuki, Sue, Kiwamu, Akiyama, Yuka, Shibata, Kei, Kawasaki, Shin-ichiro, Tanaka, Satoshi, Saitoh, Kazunori, Kawai-Nakamura, Akiko, Aida, Keiko, Hiaki, Toshihiko |
| Zdroj: |
Chemistry Letters; March 2008, Vol. 37 Issue: 3 p242-243, 2p |
| Abstrakt: |
Hydrothemal synthesis of ?-Al2O3nanoparticles obtained from aqueous Al(NO3)3solutions was carried out at 673 K and under pressures ranging from 30 to 40 MPa for 2 s using a flow apparatus. Effect of pressure and molality of HNO3and KOH on crystal phase was examined. All products were a mixture of ?-Al2O3and AlOOH having crystallite sizes less than 18 nm. Weight ratio of ?-Al2O3to AlOOH in the products evaluated from TG showed a good correlation with pH at 673 K and increased from 0.17 to 1.16 with decreasing pH. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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