Ni4 complex encapsulated hybrid Na–Y catalyst: Structural investigation and enhanced Catalysis

Abstract

In this present work, synthesized tetranuclear Ni complex is anchored on thiol functionalized Na–Y zeolite. Structure, phase integrity, shape, thermal stability and the existence of functional groups are identified by using different analytical techniques like powder XRD, N2 adsorption-desorption, Fourier transformed infrared spectroscopy (FT-IR), Nuclear magnetic resolution (29Si MAS NMR and 13C CP MAS NMR), scanning electron microscope (SEM-EDX), thermogravimetric analysis etc. The prepared hybrid catalyst Na–Y–S–Ni4 shows remarkable catalytic property by promoting the formation of high-yield products like β-amino alcohol by electrophilic ring opening reaction. 89% and 90% conversion of pyrrolidine and piperidine with high selectivity of the desired product are observed in ring breaking of cyclohexene oxide.

Keywords

• Cyclohexene oxide
• Nucleophiles
• Na–Y
• MPTES
• Heterogeneous catalysis