gravimetric analysis (TGA). The catalytic activity of n-TSA was investigated in the synthesis of important organic derivatives such as pyrimidones, benzothiazoles and chalcones. All of the reactions are very fast and the yields are good to excellent. The catalyst was easily separated and reused for several runs without appreciable loss of its catalytic activity.
纳米二氧化钛负载的
磺酸(n-
TSA)可以很容易地由
纳米二氧化钛(
氧化钛)与
氯磺酸作为磺化剂的反应制得,并通过FT-IR光谱,扫描电子显微镜(
SEM)和X射线进行表征衍射(XRD)和热重分析(TGA)。在合成重要的有机衍
生物(如
嘧啶酮,
苯并噻唑和
查耳酮)中,研究了n-
TSA的催化活性。所有的反应都非常快,收率良好至极好。催化剂易于分离,可重复使用几次,而不会明显降低其催化活性。