关键词: 煤系高岭土;插层;亚微米级;13X分子筛

Abstract: The kaolin/dimethylsulfoxide intercalation composite was synthesized and using coal-measure kaolin as raw materials.The results show that the optimum conditions of intercalation and exfoliation are ultrasonic bath at 60℃for 3 h,heat treatment at 700 ℃and the size of metakaolin is 100-900 nm.13X zeolite is synthesized by hydrothermal preparation from metakaolinite.The solid products obtained at different pre-crystallization process and crystallization time were characterized by XRD, SEM and static water adsorption test method to study the growth process of the 13X zeolite preparation.The results show that the optimized reaction conditions are as follows:pre-crystallization time was 4 h,crystallization time is 24 h.Under these conditions,13X zeolite with the octahedral crystal type and uniform size have an relative crystallinity of 90.72%and water absorption ratio is 33.17%.BET surface area is 909 m2/g, total micropore volume is 0.15 cm3/g,pore size is 33×10-9μm.

Key words: coal-measure kaolin;intercalation;sub-micron scale;13X zeolite