| 摘要 |
<p>An alumina having a very high surface area is produced by treating aluminum salt particles with an aqueous solution of ammonium hydroxide and ammonium carbonate at a pH of 9 to 12 to convert the aluminum salt to an ammonium aluminum hydroxycarbonate, then heating the ammonium aluminum hydrocarbonate to between 150o and 400oC for a period of at least 2 hours to cause its decomposition to alumina.</p> |
