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Solid State Sciences
Volume 12, Issue 4, April 2010, Pages 546-551













doi:10.1016/j.solidstatesciences.2010.01.003 | How to Cite or Link Using DOI
Copyright © 2010 Elsevier Masson SAS All rights reserved.
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Large scale synthesis of porous microspheres of Mg–Al-layerd double hydroxide with improved fire suppression effectiveness





Xiaomin Nia, b, Corresponding Author Contact Information, E-mail The Corresponding Author, Kaiqian Kuangc, Xiang Jina, Xiukun Xiaoa, b and Guangxuan Liaoa, b, c






a State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China


b Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute of University of Science and Technology of China, Suzhou, Jiangsu, 215123, PR China


c Institute of Industry Technology Guangzhou & Chinese Academy of Sciences, Guangzhou, Guangdong 511458, PR China





Received 10 April 2009; 


revised 7 August 2009; 


accepted 3 January 2010. 


Available online 13 January 2010.







Abstract


Porous microspheres of Mg–Al layered double hydroxide (LDH) were fabricated in large scale through a simple sonication-assisted method in the mixed solvent of ethylene glycol and water. Contrast experiments showed that sonication and ethylene glycol both played important roles for the formation of the porous nanostructures of Mg–Al-LDHs. A series of techniques of XRD (X-ray Diffraction), FTIR (Fourier Transmission Infrared Spectroscopy), SEM (Scanning Electron Microscopy), TEM (Transmission Electron Microscopy), BET (Brunauer-Emmett-Teller surface analysis) and TG–DTA (Thermalgravimetric–Differential Thermal Analysis) were used to characterize the product. Laboratory-scale fire extinguishment tests showed that thus-prepared porous LDHs showed much superior performance to that of the solid particulate counterpart for relatively shorter extinguishing time and smaller amount of agents required. Such an improvement could be reasonably ascribed to the special porous structure and nanosize of as-prepared Mg–Al-LDHs microspheres.







Graphical abstract











Keywords: Layered double hydroxide; Porous; Synthesis; Fire suppression





Article Outline



1. Introduction
2. Experiments
3. Results and experiments
4. Conclusions
Acknowledgements
References



































































Corresponding author. State Key Lab of Fire Science, University of Science and technology of China, Hefei, Anhui 230036, PR China. Tel.: +86 551 3607276; fax: +86 551 3601669.












Solid State Sciences
Volume 12, Issue 4, April 2010, Pages 546-551




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