表面活性剂插层改性累托石研究

结合累托石吸附和吉米奇表面活性剂耐酸碱性能,用3种吉米奇表面活性剂对累托石进行插层改性,并利用XRD、FT-IR和TEM对插层改性后的累托石进行表征.通过吸附实验显示,改性累托石的吸附能力与层间距成正比,3种改性累托石在25℃下对亚甲基蓝的最大吸附量分别达到45.56,37.81、40.82mg/g.

Performance of Rectorite Modified by Surface Active Agent

Rectorite was intercalative modified with three novel Gemini surfactants to form three kinds of organic-modified rectorite (OREC) by the conventional method. The results indicated that the interlayer distances of the three ORECs were enlarged from 2.49 nm to 3.77 nm, 3.00 nm and 3.33 nm, respectively. Besides, the adsorption results showed that the OREC with larger interlayer space displayed more adsorption capacities than the OREC with smaller interlayer space in the same work condition. The max adsorption amount of the three ORECs can be reached to 45.56 mg/g, 37.81 mg/g, 40.82 mg/g at 25℃, respectively.