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 conve- ...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 conve- niently 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 improve- ment of products yield compared with the conventional synthesis route. For application as detergent builder, the cal- cium 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.展开更多
基金Supported by the National Natural Science Foundation of China（Nos.21403193, 51503148） and the Natural Science Foundation of Tianjin City, China（Nos. 14JCQNJC02500, 15JCQNJC09000）.
文摘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 conve- niently 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 improve- ment of products yield compared with the conventional synthesis route. For application as detergent builder, the cal- cium 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.
