Synthesis and Characterization of Heterogeneous Reusable Green Catalyst by Anchoring Metal Complex onto Phosphotungstic Acid and Study of its Catalytic Study

Volume 5 Issue 1 April - June 2017

Research Paper

Synthesis and Characterization of Heterogeneous Reusable Green Catalyst by Anchoring Metal Complex onto Phosphotungstic Acid and Study of its Catalytic Study

Shiva Arun*, Amreen Naz**, Shahid Suhail Narvi***, Narendra Deo Pandey****

*-** Research Scholar, Department of Chemistry, Motilal Nehru National Institute of Technology, Allahabad, India.

***-**** Professor, Department of Chemistry, Motilal Nehru National Institute of Technology, Allahabad, India.

Arun, S., Naz, A., Narvi, S. S., and Pandey, N.D. (2017). Synthesis and Characterization of Heterogeneous Reusable Green Catalyst by Anchoring Metal Complex onto Phosphotungstic Acid and Study of its Catalytic Study. i-manager’s Journal on Material Science, 5(1), 1-8. https://doi.org/10.26634/jms.5.1.13480

Abstract

The organic-inorganic hybrid consisting of cobalt complex attached to Keggin type phosphotungstic acid (H3PW12O40), by ionic interaction was synthesized and characterized by FT-IR (Fourier Transform Infrared), elemental analysis, SEM (Scanning Electron Microscope), EDX (Energy Dispersive X-ray Analysis), powder-XRD (X-Ray Diffraction), and DRUV-Vis. The synthesized cobalt complex [Co(ethyldm)3]Cl2 (where ethyldm=ethylenediamine) was immobilized by phosphotungstic acid (H3PW12O40) in solvothermal condition, thus synthesizing a new organic-inorganic hybrid [Co(ethyldm)3(HPW12O40)]. The [Co(ethyldm)3]Cl2 and [Co(ethyldm)3(HPW12O40)] were studied for their catalytic activity for oxidative conversion of 1,2,3,4-tetrahydronaphthalene (tetralin). The hybrid [Co(ethyldm)3(HPW12O40)] was used multiple times to catalyse the substrate. The catalytic activity of [Co(ethyldm)3]Cl2 and [Co(ethyldm)3(HPW12O40)] as heterogeneous catalyst were monitored by  Gas Chromatography (GC) and the products formed during catalysis were analyzed by Mass Spectroscopy (MS).