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首页> 外文期刊>Journal of the Brazilian Chemical Society >Functionalization of Bentonite and Vermiculite after the Creation of Structural Defects through an Acid Leaching Process
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Functionalization of Bentonite and Vermiculite after the Creation of Structural Defects through an Acid Leaching Process

机译：通过酸浸过程产生结构缺陷后膨润土和Ver石的功能化

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The synthesis and use of functionalized materials is growing every year. Thus, this work presents a methodology for the functionalization of bentonite and vermiculite after the acid leaching of the raw materials. Leaching was performed with sulfuric acid (H2SO4), and the functionalization was performed with (3-mercaptopropyl)trimethoxysilane (MPTS), which was oxidized after being anchored to the support. Compared to the results in the literature for directly functionalized raw bentonite, the materials had a greater number of anchored propyl sulfonic acid groups, and the greatest number of these groups led to an increase in the acidity of the raw materials. The raw and functionalized bentonite and vermiculite were characterized by X-ray diffraction (XRD), energy dispersive X-ray (EDX), thermogravimetric analysis (TGA), N2 adsorption and the surface acidity was determined by acid-base titration.
机译：官能化材料的合成和使用每年都在增长。因此，这项工作提出了一种在原料酸浸后膨润土和ver石功能化的方法。用硫酸（H 2 SO 4）进行浸出，并用（3-巯基丙基）三甲氧基硅烷（MPTS）进行官能化，将其固定在载体上后被氧化。与直接功能化的膨润土原料的文献结果相比，该材料具有更多的锚固丙基磺酸基团，这些基团的数量最多导致原料的酸度增加。通过X射线衍射（XRD），能量色散X射线（EDX），热重分析（TGA），N2吸附对未加工的和功能化的膨润土和ver石进行表征，并通过酸碱滴定法测定其表面酸度。

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