NGHIÊN CỨU ĐIỀU CHẾ VÀ CẤU TRÚC SÉT HỮU CƠ TỪ BENTONIT TRUNG QUỐC VỚI CETYLTRIMETYLAMONI BROMUA

Tóm tắt

Organoclay is synthesized from China bentonite and cetyltrimethylammonium bromide (CTAB) by wet method. The influence of organoclay making process on the distance of the organoclay layers (d001) and the level of intrusion CTAB into bentonite were studied. By X-ray diffraction method, the direct method
calcined sample, we determined suitable conditions for preparing organoclays from China bentonite and CTAB: reaction temperature is 40oC, the volume ratio CTAB/bentonite is 0.5, pH reactionis 8, the reaction time is 4h. The product is dried for 48 hours at 80oC. Organoclay synthesis is studied by the methods as XRD, TGA, SEM. The d001 and organic content in the respective product is 19,054Å; 26,89%. SEM images showed that the organoclay synthesis has layer structure and high porosity.