A promising mesoporous SiAl material, Al-MCM-41 was successfully prepared by alkali calcination leaching of natural palygorskite, and sequent hydrothermal synthesis coupled with calcination. The morphology, structure, surface area and pore-size distribution of the material were characterized by scanning electron microscopy, small-angle X-ray diffraction and N₂ adsorption–desorption isotherms. The Al-MCM-41 possessed better crystallinity and larger specific surface area with CTAB/SiO₂ mass ratio of 0.1:1, pH of 5, crystallization temperature of 110 °C, crystallization time of 12 h and calcination of 550 °C for 5 h. The Al-MCM-41 was used as an adsorbent for the removal of hazardous aniline dye-basic fuchsin from water. Adsorption kinetics and isotherms analysis indicated that adsorption of basic fuchsin onto Al-MCM-41 followed pseudo-first-order model and Langmuir adsorption isotherm. In addition, intra-particle diffusion was rate determining step of the adsorption process. The results demonstrated that the as-synthesized Al-MCM-41 had potential applications in the treatment of waste water.

Al-MCM-41是一种有前景的介孔Si Al材料，它是通过自然坡缕石的碱煅烧浸出，随后的水热合成和煅烧而成功制备的。通过扫描电子显微镜，小角X射线衍射和N ₂吸附-解吸等温线表征了材料的形貌，结构，表面积和孔径分布。Al-MCM-41具有更好的结晶度和更大的CTAB / SiO ₂比表面积质量比为0.1：1，pH为5，结晶温度为110°C，结晶时间为12 h，在550°C下煅烧5 h。Al-MCM-41用作吸附剂，用于从水中去除有害的苯胺染料碱性品红。吸附动力学和等温线分析表明碱性品红在Al-MCM-41上的吸附遵循拟一阶模型和Langmuir吸附等温线。另外，颗粒内扩散是吸附过程的速率确定步骤。结果表明，合成后的Al-MCM-41在废水处理中具有潜在的应用前景。