Structural, Surface, Thermal and Catalytic Properties of Chitosan Supported Cu(II) Mixed Ligand Complex Materials

Abstract

Schiff base modified chitosan (SC: salicylidenechitosan) has been synthesized by the condensation reaction of chitosan and salicylaldehyde. From this ligand, three Cu(II) mixed ligand complexes [Cu (SC) (SA)] (1), [Cu (SC) (ST)] (2) and [Cu (SC) (VA)] (3) (SA: salicyledeneaniline; ST: salicylidenethiourea; VA: o-vanillideneaniline) have been synthesized successfully. The structure and properties of the complexes have been characterized by spectral and analytical techniques. Their thermal and morphological properties have been also discussed in detail. The crystallinity of the compounds has explored with X-ray diffraction spectroscopy. The catalytic ability of the complexes has been investigated in the oxidation reaction of cyclohexane into cyclohexanol and cyclohexanone using hydrogen peroxide as oxidant and their catalytic activity is in the order of complex 1 > 2 < 3.