Synthesis and Catalytic Activity of Cu(II), Fe(III) and Bi(III) Complexes of Thio-Schiff Base Encapsulated in Zeolite-Y for Hydroxylation of Phenol

摘要: Coordination of 4-{[(1E)-(2-hydroxyphenyl)methylene]amino}-2,4-dihydro-3H-1,2,4-triazole-3-thione, [sal(thiotriazol)], with M-exchanged zeolite-Y (M = Cu(II), Fe(III) and Bi(III)) leads to the encapsulation metal complexes in supercages by flexible ligand method. The prepared encapsulated have been characterized physico-chemical techniques, which indicated that were effectively inside Na–Y, without any modification morphology structure zeolite. 3D model generated for these suggests can accommodate FAU strain. catalytic activity all catalysts towards hydroxylation phenol was evaluated under heterogeneous conditions using hydrogen peroxide as an oxidant. Under optimized conditions, show moderate excellent selectivity (>95%) catechol. These stable reused a further three times after recovering. results reflect reusability catalysts, no significant loss their noticed.