In this study, ordered structure with a hexagonal arrangement MCM-41 was synthesized and functionalized with L-cysteine group and further palladium particles has been supported on its surface (L-cysteine-Pd@MCM-41). The prepared catalyst is well characterized by various techniques such as low-angle X-ray diffraction (XRD), thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), N₂ adsorption–desorption measurement isotherms, energy-dispersive X-ray spectroscopy (EDS), X-ray Mapping (WDX), scanning electron microscopy (SEM) and inductively coupled plasma (ICP) techniques. The collected data from all techniques provided evidence that palladium complex was immobilized onto MCM-41 pores. The obtained nanocatalyst demonstrated excellent activity as a new heterogeneous catalyst for the homoselective synthesis of 5-substituted 1H-tetrazole derivatives. This method has the advantages of simple methodology, eco-friendly and simplicity in the separation of catalyst, shorter reaction times, and high yields of the product. Finally, easy catalyst recovery was achieved and the catalyst could be recycled for six times without a significant decrease in activity and selectivity.

在这项研究中，合成了六边形排列的有序结构MCM-41，并用L-半胱氨酸基团官能化，并且在其表面上还支撑了钯颗粒（L-半胱氨酸-Pd @ MCM-41）。制备的催化剂通过多种技术进行了很好的表征，例如低角度X射线衍射（XRD），热重分析（TGA），傅立叶变换红外光谱（FT-IR），N ₂吸附-解吸测量等温线，能量色散X射线光谱（EDS），X射线映射（WDX），扫描电子显微镜（SEM）和电感耦合等离子体（ICP）技术。从所有技术收集的数据提供了钯络合物固定在MCM-41孔上的证据。所获得的纳米催化剂表现出优异的活性，作为用于5-取代的1H-四唑衍生物的均选择合成的新型非均相催化剂。该方法具有方法简单，环境友好，催化剂分离简单，反应时间短，产物收率高的优点。最后，实现了容易的催化剂回收，并且催化剂可以循环使用六次而活性和选择性没有显着降低。