Schiff base complexes of Co (ӀӀ) and Cu (ӀӀ)-immobilized on modified magnetic iron oxide nanoparticles as retrievable heterogeneous nanocatalysts for oxidation of olefins
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
IMES13_108
تاریخ نمایه سازی: 13 آبان 1398
Abstract:
Novel Schiff base complexes of Co (ӀӀ) and Cu (ӀӀ)-immobilized on chemically modified iron oxide nanoparticles (Fe3O4@SiO2@APTMS/Schiff base/ M ( ӀӀ)) has been synthesized as an efficient and retrievable nanocatalyst for oxidation reaction of alkenes. Various techniques such as FTIR, XRD, SEM, EDS and UV-Vis were carried out for characterization of the prepared particles. The catalytic functionality of the magnetic nanocatalysts were investigated for the oxidation of olefins.The results illustrate that Fe3O4@SiO2@APTMS/Schiff base/ Cu (ӀӀ) can be the most efficient nanocatalyst exclusively for oxidation of styrene and α-methyl styrene with 92-100 % conversions and 68-90% selectivity of benzaldehyde and acetophenone, respectively in the presence of H2O2 as an eco-friendly oxidant. The Prepared magnetic nanocatalysts can be retrieved easily without remarkable devaluation of its catalytic property by operating an external magnetic process.
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Authors
Zahra gorgannejad
Master Graduate, Department of Chemistry, Faculty of Physics & Chemistry, Alzahra University, P. O. Box ۱۹۹۳۸۹۳۹۷۳, Tehran, Iran
Maryam Lashanizadegan
Associate Professor, Department of Chemistry, Faculty of Physics & Chemistry, Alzahra University, P. O. Box ۱۹۹۳۸۹۳۹۷۳, Tehran, Iran.
Fatemeh Zarei
Master student, School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran,Tehran, Iran.