Design, preparation and characterization of Zr(O)@Creatine@KIT-۶nanoparticles as a nanocatalyst for the synthesis of various tetrazole derivatives

In the last few years, immobilization of homogeneous catalysts on various solid supports withthe advantage of catalysts separation and recycling have been widely studied in many divergentareas of research [۱,۲]. Among different nanoparticles, mesoporpus silica is commonly employedas a heterogeneous support for the immobilization of homogeneous catalyste [۳]. KIT-۶ is arelatively new structure of mesoporous silica with thick expanded walls, thermal stable, openporosity and very accessible to guest species and metal complexes.Therefore, due to the mentionedunique properties of mesoporous KIT-۶, it can be used as a suport for the synthesis heterogeneouscatalysts. In this work, the synthesized KIT-۶ was modified by ۳-chloropropyltrimethoxysilane(CPTMS). Then creatine was immobilized on its surface (creatine@KIT-۶). Finally, zirconiumdioxide was fabricated on creatine@KIT-۶ (Zr(O)@creatine@KIT-۶). The obtained catalyst wasidentified by IR, BET, XRD, EDS, SEM and TGA methods and further it was investigated in thesynthesis of tetrazole derivatives. All products were obtained with high yield and purity whichindicates the high catalytic activity of this catalyst

کلیدواژه ها:

KIT-۶ ، Heterogeneous catalysts ، Mesoporous materials ، Tetrazole ، Creatine