Different amine functionalized K10 montmorillonites were hydrothermally fabricated by a simple method of treatment of the neat clay with different amine solutions and used as heterogeneous catalysts towards the Knoevenagel condensation reaction. Catalytic results show that the di-amine functionalized K10 montmorillonite exhibits high efficacy for promoting this reaction at room temperature and in the absence of a solvent. The solid catalyst was characterized using a variety of different techniques; including Fourier transform infrared spectroscopy (FT-IR), nitrogen physisorption measurements, 29Si CP MAS NMR spectroscopy, NH3-temperature programmed desorption (NH3-TPD), X-ray powder diffraction (XRD), and field emission scanning electron microscopy (FESEM). The catalyst could be recycled and reused for several runs without any loss of inherent catalytic activity.
不同的胺功能化K10
蒙脱石通过简单的方法制备,即将纯粘土与不同的胺溶液处理,并作为异相催化剂用于Knoevenagel缩合反应。催化结果显示,二胺功能化的K10
蒙脱石在室温下、无溶剂的情况下对促进该反应具有高效性。固体催化剂使用多种不同技术进行表征,包括傅里叶变换红外光谱(FT-IR)、氮物理吸附测量、29Si CP MAS NMR光谱、
氨气程序升温脱附(NH3-
TPD)、X射线粉末衍射(XRD)以及场发射扫描电子显微镜(FE
SEM)。该催化剂可以重复回收使用多次,而不会损失内在的催化活性。