Synthesis and characterization of Zn(1-x)NixAl 2O4 spinels as a new heterogeneous catalyst of biginelli's reaction

Date
2013
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Source Title
Bulletin of the Korean Chemical Society
Print ISSN
0253-2964
Electronic ISSN
1229-5949
Publisher
Korean Chemical Society
Volume
34
Issue
5
Pages
1445 - 1453
Language
English
Type
Article
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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.

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Keywords
Biginelli's reaction, Catalytic properties, Spinel, XPS, XRD
Citation
Published Version (Please cite this version)