Synthesis and properties of CaAl-layered double hydroxides of hydrocalumite-type
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Viktor Tóth
,
Mónika Sipiczki
Abstract
CaAl-layered double hydroxides (CaAl-LDHs) with various carbonate ion contents are essentially formed in Bayer liquors during the causticisation step in alumina production. Under well-defined conditions hemicarbonate is formed, which is beneficial in the process of retrieving both Al(OH)4− and OH− ions. In the current work, Ca2Al-LDHs with various carbonate contents were prepared by the co-precipitation procedure and the products were dried in different ways. Structural information was obtained by a variety of methods, such as X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). Elemental maps were constructed through a combination of SEM images and EDX measurements. The targeted CaAl-hydrocalumites were successfully synthesised. It was found that the method used for drying did not influence the basal spacing although it significantly altered the particle sizes.
[1] Chrysochoou, M., & Dermatas, D. (2006). Evaluation of ettringite and hydrocalumite formation for heavy metal immobilization: Literature review and experimental study. Journal of Hazardous Materials, 136, 20–33. DOI: 10.1016/j.jhazmat.2005.11.008. http://dx.doi.org/10.1016/j.jhazmat.2005.11.00810.1016/j.jhazmat.2005.11.008Search in Google Scholar PubMed
[2] Hobbs, M., Zhang, M., & Wang, Y. (2003). Competitive anion sorption in hydrocalumites. In Proceedings of the 2003 International Symposium on South-East Asian Water Environment, October 23–25, 2003 (pp. 204–208). Bangkok, Thailand: Press of the Asian Institute of Technology. Search in Google Scholar
[3] Messersmith, P. B., & Stupp, S. I. (1992). Synthesis of nanocomposites: Organoceramics. Journal of Materials Research, 7, 2599–2611. DOI: 10.1557/jmr.1992.2599. http://dx.doi.org/10.1557/JMR.1992.259910.1557/JMR.1992.2599Search in Google Scholar
[4] Palmer, S. J., Frost, R. L., & Nguyen, T. (2009). Hydrotalcites and their role in coordination of anions in Bayer liquors: Anion binding in layered double hydroxides. Coordination Chemistry Reviews, 253, 250–267. DOI: 10.1016/j.ccr.2008.01.012. http://dx.doi.org/10.1016/j.ccr.2008.01.01210.1016/j.ccr.2008.01.012Search in Google Scholar
[5] Perrotta, A. J., & Williams, F. (1995). Hydrocalumite formation in Bayer liquor and its promotional effect on oxalate precipitation. Light Metals, 1995, 77–87. Search in Google Scholar
[6] Perrotta, A. J., Williams, F. S., & Stonehouse, L. (1997). Layered double hydroxides for treatment of Bayer process lake water. Light Metals, 1997, 37–48. Search in Google Scholar
[7] Rousselot, I., Taviot-Guého, C., Leroux, F., Léone, P., Palvadeau, P., & Besse, J. P. (2002). Insights on the structural chemistry of hydrocalumite and hydrotalcite-like materials: Investigation of the series Ca2M3+ (OH)6Cl · 2H2O (M3+: Al3+, Ga3+, Fe3+ and Sc3+) byX-ray powder diffraction. Journal of Solid State Chemistry, 167, 137–144. DOI: 10.1006/jssc.2002.9635. http://dx.doi.org/10.1006/jssc.2002.963510.1006/jssc.2002.9635Search in Google Scholar
[8] Sipos, P., Hefter, G., & May, P. M. (1998). A hydrogen electrode study of concentrated alkaline aluminate solutions. Australian Journal of Chemistry, 51, 445–454. DOI: 10.1071/c97220. http://dx.doi.org/10.1071/C9722010.1071/C97220Search in Google Scholar
[9] Sipos, P., May, P. M., & Hefter, G. T. (2000). Carbonate removal from concentrated hydroxide solutions. The Analyst, 125, 955–958. DOI: 10.1039/a910335j. http://dx.doi.org/10.1039/a910335j10.1039/a910335jSearch in Google Scholar
[10] Williams, F. S., & Perrotta, A. J. (1998). US Patent No. 5,728,180. Washington, DC, USA: US Patent and Trademark Office. Search in Google Scholar
[11] Zhang, M., & Reardon, E. J. (2005). Chromate and selenate hydrocalumite solid solutions and their applications in waste treatment. Science in China Series C: Life Sciences, 48(Supplement), 165–173. http://dx.doi.org/10.1007/BF0288981510.1007/BF02889815Search in Google Scholar PubMed
[12] Zümreoglu-Karan, B., & Ay, A. N. (2012). Layered double hydroxides — multifunctional nanomaterials. Chemical Papers, 66, 1–10. DOI: 10.2478/s11696-011-0100-8. http://dx.doi.org/10.2478/s11696-011-0100-810.2478/s11696-011-0100-8Search in Google Scholar
© 2013 Institute of Chemistry, Slovak Academy of Sciences
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