【摘要】 研究了胡敏酸在高岭土上的吸附行为 ,并运用X衍射、红外光谱和热重等分析方法 ,对复合前后的高岭土进行分析。结果表明 ,连续洗涤 6次后 ,可获得稳定的胡敏酸高岭土复合体 ;胡敏酸在高岭土上的吸附符合Fruendlich吸附模式 ,Kf 为 0 .85 7;高岭土胡敏酸复合体的红外光谱出现了明显的C—H振动吸收峰 ;吸附行为主要表现为化学吸附 ,发生在铝的表面羟基吸附位上更多还原

【Abstract】 In this paper, the adsorption behavior of humic acid (HA) on kaolin was investigated and the characteristics of HA-kaolin complexes were studied by means of X-ray diffraction pattern,TGA and IR. According to the results obtained,when the HA-kaolin complexes are washed six times,the HA can be stably combined with the kaolin; the Fruendlich-type equation can describe the adsorption isotherm of HA on kaolin well,and the K_f of HA on kaolin is 0.857; there exist apparent absorption peaks of hydrocarbon in the IR; chemical adsorption plays a major role in the interaction between HA and kaolinite, and the adsorption behavior mainly takes place on the hydroxyl sites of aluminum.更多还原