Encapsulation of Bis(ethylenediamine) Copper(Ⅱ) Complex in Zeolite Matrices - Comparison with Encapsulation of Natural Enzymes Like Cytochrome-C and Vitamin-B_(12)

摘要

Bis(ethylenediamine) copper(Ⅱ) complex was encapsulated in NaY, KL, Naβ and NaZSM-5 zeolite. The redox properties of metal complexes in neat and encapsulated state were studied by cyclic voltammetry. The redox potential of metal complex is altered towards negative value upon encapsulation in various zeolites. This may be due to axial interaction with various zeolite matrix. The redox properties of biological systems are also altered (cytochrome-C, and Vitamin-B_(12)) when they are immobilized on NaAlMCM-41 materials. The copper ethylenediamine complex in constrained environment shows higher activity for the oxidation of dimethyl sulfide compared to that of neat complex.