| 摘要 |
Alpha alumina, as a new composition of matter, particularly suitable as a support for catalyst compositions (especially reforming catalysts), having surface areas in excess of 75 m2/g (B.E.T), ranging preferably from 100 m2/g to 600 m2lg, and higher, and more preferably from 150 m2lg to 400 m2/g. A novel process is also described wherein these novel alpha alumina compositions are formed from hydrated beta alumina, especially beta -Al2O3.H2O, at critical low-temperature, low water-vapor pressure conditions, preferably also at low system pressure or under vacuum. The alpha alumina is particularly useful as a support for a Group VIII noble metal reforming catalyst.
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