高等学校化学研究 ›› 2017, Vol. 33 ›› Issue (4): 520-524.doi: 10.1007/s40242-017-7008-y
High-efficient Synthesis of Zeolite LTA via a Wet-gel Crystallization Route
JI Yanyan1, ZHANG Bing1, ZHANG Wu2, ZHAO Bo1, LI Hongbo1, WANG Dongmei3, LI Ying1
- 1. School of Environmental and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane and Processes, Tianjin Polytechnic University, Tianjin 300387, P. R. China;
2. College of Marine and Environment Science, Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, Tianjin 300457, P. R. China;
3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
High-efficient Synthesis of Zeolite LTA via a Wet-gel Crystallization Route
JI Yanyan1, ZHANG Bing1, ZHANG Wu2, ZHAO Bo1, LI Hongbo1, WANG Dongmei3, LI Ying1
- 1. School of Environmental and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane and Processes, Tianjin Polytechnic University, Tianjin 300387, P. R. China;
2. College of Marine and Environment Science, Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, Tianjin 300457, P. R. China;
3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
摘要：
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.