This work was in part supported by Chalco, Ltd. Technical assistances. Support from Jilong Zhang, Xiaoguang Liu, Jie Meng, Genfa Meng, Gang Wu, and Xueying Zhang is gratefully acknowledged. We thank Prof. A. G. Fane for constructive comments.
Efficient and Sustainable Production of Alumina by Electrolysis of Sodium Carbonate†
Article first published online: 13 OCT 2011
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 50, Issue 49, pages 11719–11723, December 2, 2011
How to Cite
Yu, Z., Chen, Y., Niu, Y., Tang, Y., Wan, P., Lv, Z. and Yang, X. J. (2011), Efficient and Sustainable Production of Alumina by Electrolysis of Sodium Carbonate. Angew. Chem. Int. Ed., 50: 11719–11723. doi: 10.1002/anie.201104444
- Issue published online: 28 NOV 2011
- Article first published online: 13 OCT 2011
- Manuscript Received: 27 JUN 2011
- alumina production;
- bauxite ores;
- sodium carbonate;
- sustainable chemistry
Efficiency doubles: The electrolysis of sodium carbonate generates concentrated caustic soda for bauxite ore digestion, sodium bicarbonate for aluminum hydroxide precipitation, and hydrogen and oxygen for the hydroxide calcination. Consequently, an efficient and sustainable production process of alumina from bauxite is proposed and the overall production efficiency is increased by 111 % as compared with the Bayer process (see picture).