INVESTIGATION ON THE PROCESS OF SYNTHESIS ORGANOCLAYS FROM BENTONITE (BINH THUAN) WITH ETHYLTRIPHENYL PHOSPHONIUM BROMIDE AND THE INITIAL RESEARCH INTO STRUCTURE

Abstract

   Organoclay is synthesized from bentonite (Binh Thuan) and ethyltriphenylphosphonium bromide (ETPB) by wet method. The influence of organoclay makingprocess on the distance of the organoclay layers (d001) and the level of intrusion ETPBinto bentonite were studied. By X-ray diffraction method, the direct method calcinedsample, we determined suitable conditions for preparing organoclays from bentonite(Binh Thuan) and ETPB: reaction temperature is 50oC, the volume ratioETPB/bentonite is 0.5, pH of the solition is 9, the reaction time is 4h. The product isdried for 48 hours at 80oC. Organoclay synthesis is studied by the methods as XRD,IR, TGA, SEM. The d001 and organic content in the respective product is 18,367Å,12,58%. IR method showed that the ETPB is in the organoclay. SEM images showedthat the organoclay synthesis has layer structure and high porosity.

Keywords: Synthesis, bentonite, ethyltriphenyl phosphonium bromide, organoclays,structure.