SYNTHESIS METHOD FOR SWELLING Na-4-mica

摘要

Disclosed herein is the synthesis method for swelling Na-4-mica comprising a step of thermally treating mixture of Si source, Al source, MgF2 and NaCl with the molar compositions of 1~2 (based on the Si atom): 1~2 (based on the Al atom): 2~4: 2~6 at the temperature of 600~1000 °C for 0.5~72 hours. According to the present invention, it is possible to repress the formation of impurities and eliminate tedious postpreparation of the conventional method. In addition, the crystal size of Na-4-mica could be manipulated by changing initial molar ratio of Al source material/NaCl.