摘要
以潍坊蒙脱石为原料,研究了十八烷基三甲氯化铵(1831)在蒙脱石上的吸附反应,建立了等温吸附模型,探讨了吸附量随时间和介质pH值的变化及机理,通过脱附反应研究了有机蒙脱石的稳定性。结果表明,Lang-muir吸附等温式和Redlich-Peterson等温吸附式能较好地拟合吸附曲线,利用表面活性剂在固液界面上的吸附公式也得到了较好地拟合。pH值较高有利于季铵盐在蒙脱石上的吸附,80℃的条件下得到的有机蒙脱石稳定性好于30℃。
Taking Weifang montmorillonite as raw material,the adsorption of 1831（octadecyl trimethyl ammonium chloride）on the mortmorillonite was studied in this paper.A new adsorption model was developed to describe the adsorption isotherm,and the mechanism of the change of adsorptive capacity with contact time and pH was examined.This paper also discussed the stability of 1831 organo-montmorillonite according to the desorption reaction data.Results showed that the adsorption isotherm of the surfactant on solid/liquid interface can well fit the adsorption curve.The higher pH is benefit to the adsorption of quaternary ammonium salt on the montmorillonite.And the stability of organo-montmorillonite prepared at 80℃ is better that prepared at 30℃.
出处
《矿产综合利用》
CAS
2010年第4期30-34,共5页
Multipurpose Utilization of Mineral Resources
基金
国家自然科学基金(50774050)
关键词
1831
吸附量
等温吸附模型
稳定性
Octadecyl trimethyl ammonium chloride（1831）
Adsorptive capacity
Adsorption isotherm model
Stability
