Mo4O18(C5H6N)2.H2O Organic-Inorganic Hybrid as Bi-Functional Catalyst for Knoevenagel Condensation
Paper ID : 1309-ICNS
Authors:
Aliyeh Feghhi, Reihaneh Malakooti *
Department of Chemistry, College of Sciences, University of Birjand, Birjand, Iran
Abstract:
A new organic-inorganic compound, Mo4O18(C5H6N)2.H2O hybrid (1), with semilunar morphology was synthesized via an easy wet chemical method at room temperature in water. The as-synthesized hybrid product was characterized by different methods, including X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), Thermogravimetric analysis (TGA), N2-adsorption/desorption and elemental analysis. Then, these materials were used in Knoevenagel condensation reaction as heterogeneous bi-functional catalyst. For most of the aldehydes in the reaction with malononitrile, the yields were above 95%. The reactions were carried out in aqueous media under mild temperature. In addition no extra base or acid were used. The catalyst was very stable under these conditions and after 12 cycles reaction under optimized conditions, no remarkable decrease of catalytic efficiency was detected. Finally, the simple scale-up process for the preparation, high performance, and reusability of the Mo4O18(C5H6N)2.H2O as a bi-functional catalyst provides a great potential for industrial applications.
Keywords:
Knoevenagel condensation, Organic-inorganic hybrid, Bi-functional catalyst
Status : Abstract Accepted (Poster Presentation)