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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 5
BKCSDE 34(5)
May 20, 2013 

 
Title
Synthesis and Characterization of Zn(1-x)NixAl2O4 Spinels as a New Heterogeneous Catalyst of Biginelli’s Reaction
Author
Fatima-Zohra Akika, Nadjib Kihal, Tahir Habila, Ivalina Avramova, efik Suzer, Bernard Pirotte, Smail Khelili*
Keywords
Spinel, XRD, XPS, Catalytic properties, Biginelli’s reaction
Abstract
Zn(1-x)NixAl2O4 (x = 0.0-1.0) spinels were prepared at 800 °C by co-precipitation method and characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The specific surface area was determined by BET. SEM image showed nano sized spherical particles. XPS confirmed the valence states of the metals, showing moderate Lewis character for the surface of materials. The powders were successfully used as new heterogeneous catalysts of Biginelli’s reaction, a one-pot threecomponent reaction, leading to some dihydropyrimidinones (DHPMs). These new catalysts that produced good yields of DHPMs, were easily recovered by simple filtration and subsequently reused with persistent activity, and they are non-toxic and environmentally friendly. The optimum amount of catalyst is 20% by weight of benzaldehyde derivatives, while the doping amount has been found optimal for x = 0.1.
Page
1445 - 1453
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