Synthesis of ammonium aluminum oxalate from Bayer aluminum hydroxide

✍ Scribed by Hwa Young Lee

• Book ID: 113794680
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 455 KB
• Volume: 65
• Category: Article
• ISSN: 0167-577X
• DOI: 10.1016/j.matlet.2011.05.106

✦ Synopsis

The synthesis of ammonium aluminum oxalate was performed using Bayer aluminum hydroxide as a raw material. For this aim, Bayer aluminum hydroxide of 99.7% purity was dissolved in oxalic acid to produce an aqueous aluminum solution. As a result, it was found that a mixing ratio of ethanol to Al solution exceeding 2:1 and a pH adjusted to greater than 8.0 should be employed in the synthesis of ammonium aluminum oxalate. From the chemical analysis of ammonium aluminum oxalate prepared in this work, the NH 4 , Al and C content were found to be 14.5, 7.18 and 17.4%, respectively which are very close to the theoretical values of (NH 4 ) 3 Al(C 2 O 4 ) 3 3H 2 O.