Supported sulfonic acid on magnetic nanoparticles used as a reusable catalyst for rapid synthesis of <b>α</b>-aminophosphonates
作者:Mozhgan Afshari、Maryam Gorjizadeh、Mohammad Naseh
DOI:10.1080/15533174.2016.1186096
日期:2017.4.3
Sulfonic acid was anchored on the surface of silica-coated cobalt ferrite core to obtain a new magnetically separable catalyst. The resultant composite was characterized by various techniques, including FT-IR, X-ray diffraction, FESEM, energy-dispersive X-ray, TEM, TGA, and vibrating sample magnetometer. The immobilized sulfonic acid was shown to be an efficient heterogeneous catalyst for the synthesis
磺酸被锚固在二氧化硅涂层的钴铁氧体磁芯的表面上,从而获得了一种新型的可磁分离的催化剂。所得复合材料通过多种技术进行表征,包括FT-IR,X射线衍射,FESEM,能量色散X射线,TEM,TGA和振动样品磁力计。固定化的磺酸是在室温下无溶剂条件下合成α-氨基膦酸酯的有效多相催化剂。通过简单的磁倾析可以很容易地回收催化剂,并且可以循环使用7次,而不会明显降低催化活性。