The organization of organic species on the ordered structures of clays and clay minerals is one way to produce inorganic-organic hybrids with controlled microstructures and properties. The reactions of the adsorbed species and their arrangement on the clay surfaces can be guided by the choice of clay and of adsorbed species. The purpose of the present study was to intercalate alkylammonium ions into a Thai bentonite and to study the effect on dye-adsorption efficiency. A series of alkylammonium ions, C_nH_2n+1NH₃⁺ (n = 8, 10, 12, or 18), was incorporated into the interlayer spaces of a natural bentonite by mixing an aqueous dispersion of bentonite with an aqueous solution of protonated alkylamines at room temperature. The basal spacings of the intercalation compounds varied depending on the alkyl chain lengths and the amount of alkylammonium ions. The alkylammonium ions adsorbed formed lateral monolayer, bilayer, pseudo-trimolecular layer, paraffin-type monolayer, and/or paraffin-type bilayer structures. The adsorption efficiency of alkylammonium-bentonites was determined using batch adsorption experiments of rhodamine 6G from a water-ethanol solution; the greatest efficiency was 87% while that of the bare bentonite was 47%. The loading amount and the arrangement of the intercalated alkylammonium ions in the interlayer spaces, as well as the specific surface area and pore volume, played important roles in the adsorption efficiency of alkylammonium-bentonite. The adsorption equilibrium data for rhodamine 6G on the best adsorbent were interpreted using the Langmuir isotherm model and a pseudo-second order kinetics model. The adsorption efficiency of the adsorbent decreased by only 17% after five runs.

有机物质在粘土和粘土矿物的有序结构上的组织是产生具有受控微观结构和性质的无机-有机杂化物的一种方式。吸附物质的反应及其在粘土表面上的排列可以通过粘土和吸附物质的选择来指导。本研究的目的是将烷基铵离子嵌入泰国膨润土并研究其对染料吸附效率的影响。一系列烷基铵离子，C _n H _{2 n +1} NH ₃ ⁺ ( n= 8、10、12 或 18)，通过在室温下将膨润土的水分散体与质子化烷基胺的水溶液混合，将其掺入天然膨润土的层间空间。嵌入化合物的基础间距根据烷基链长度和烷基铵离子的量而变化。吸附的烷基铵离子形成横向单层、双层、伪三分子层、石蜡型单层和/或石蜡型双层结构。使用罗丹明6G从水-乙醇溶液中的批量吸附实验确定烷基铵-膨润土的吸附效率；最大效率为 87%，而裸膨润土的最大效率为 47%。夹层空间中嵌入的烷基铵离子的负载量和排列，以及比表面积和孔体积，对烷基铵-膨润土的吸附效率起重要作用。罗丹明 6G 在最佳吸附剂上的吸附平衡数据使用朗缪尔等温线模型和伪二级动力学模型进行解释。吸附剂的吸附效率在五次运行后仅下降了 17%。