Abstract
Zeolite LTA has been largely used as good adsorbent and detergent builder with a huge amount of demand. Numerous efforts have been devoted to the exploration of new synthetic methods for preparing zeolites more conveniently and efficiently. Herein, we reported a wet-gel crystallization route to synthesize zeolite LTA from simple filtration of the initial reaction mixture followed by heating for crystallization. The products were characterized in detail by means of X-ray diffraction, Raman spectra, scanning electron microscopy and elemental analysis. The yields of the solid products were also investigated, which suggested that the wet-gel method afforded an obvious improvement of products yield compared with the conventional synthesis route. For application as detergent builder, the calcium ion exchange rates of the wet-gel synthesized zeolites were similar with that of conventional LTA zeolites. Therefore the wet-gel route would be potentially important in industry due to its advantages of easy-performing, high-yielding and energy-saving.
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Supported by the National Natural Science Foundation of China(Nos.21403193, 51503148) and the Natural Science Foundation of Tianjin City, China(Nos.14JCQNJC02500, 15JCQNJC09000).
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Ji, Y., Zhang, B., Zhang, W. et al. High-efficient synthesis of zeolite LTA via a wet-gel crystallization route. Chem. Res. Chin. Univ. 33, 520–524 (2017). https://doi.org/10.1007/s40242-017-7008-y
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DOI: https://doi.org/10.1007/s40242-017-7008-y