Host (dealuminated Y zeolite)-guest (zirconium tetraphenylporphyrin) nanocomposite materials. An efficient catalyst in the oximation of aldehydes

In this research, zirconium tetraphenylporphyrin encapsulated into dealuminated Y zeolite (ZrTPP-DAZY) was prepared through a template synthesis method. This heterogeneous catalyst was characterized by XRD, FT-IR, DRS, UV-Vis, EDX and FESEM techniques. The amount of ZrTPP in the nanocage of dealuminated Y zeolite was estimated to be 0.0156 g/g of support. This catalytic system was employed for an efficient oximation of aldehydes under magnetic stirring conditions at room temperature and the corresponding products were obtained in 50-90% yields. This catalytic system also indicated good shape selectivity towards linear aldehydes. ZrTPP-DAZY was reused several times without any significant loss in catalytic activity.