Synthesis and Characterization of Montmorillonite Organo-intercalation Compound Assisted by Microwave Irradiation
In this study, a montmorillonite organo-intercalation compound (MOIC) was synthesized by using a Na-modified bentonite (NaB) as a matrix and hexadecyltrimethylammonium (HDTMA) bromide as an intercalating reagent under microwave irradiation. The synthesized products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), organic carbon content measurement, and adsorption density determination. The results show that, at 10% suspension concentration and 10 minutes irradiation in a 130-W microwave oven, the basal spacing d(001) of the synthesized MOIC increases to 2.209 nm from the original 1.218 nm of NaB. The MOIC has much higher adsorptive densities to nitrobenzene and aniline from aqueous solution than the NaB. The adsorption isotherm of nitrobenzene on the MOIC is linear, and the adsorption is mainly the result of nitrobenzenes preferred partition in MOIC over aqueous solution due to MOICs hydrophobicity. The adsorption isotherm of aniline on MOIC follows the Freundlich equation and the increased adsorption is not only the result of anilines preferred partition in MOIC over aqueous solution but also that of the MOICs surface adsorptions.
Mortmorillonite Organo-intercalation compound Microwave irradiation Synthesis Characterization
M. L. Cao Q. Liu X. J. Wang
School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, China Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada Hubei Zhongfei Bentonite Co., Ltd., Ezhou, Hubei, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
3304-3310
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）