RESEARCH ARTICLE

 

Preparation of Mg-doped Ce-Zr solid catalysts and their catalytic potency for the synthesis of 5-arylidene-2,4-thiazolidinediones via Knoevenagel condensation

 

 

Sandip Rathod^I; Madhukar Navgire^II; Balasaheb Arbad^II; Machhindra Lande^{II, *}

^IDepartment of Chemistry, Waghire Arts, Commerce & Science College, Saswad, Pune, (MS)-412301, India
^IIDepartment of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, (MS)-431004, India

 

 

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ABSTRACT

A series of Mg-doped Ce-Zr mixed oxides with different molar ratios were prepared by a simple co-precipitation method. The surface characterization of these materials were investigated by means of XRD, FT-IR, SEM-EDS, CO₂-TPD and BET techniques. The catalytic activity of the prepared materials was tested by synthesizing of 5-arylidene-2,4-thiazolidinedione derivatives via a Knoevenagel condensation using aromatic aldehydes and 2,4-thiazolidinedione in ethanol:water medium. The best catalytic activity was obtained with Ce₁Mg_0.6Zr_0.4O₂. The particle size or crystallite size was estimated using the Debye-Scherrer equation. Addition of MgO to the Ce-Zr mixed metal oxides affected both particle size and catalytic activity.

Keywords: Mg-doped Ce-Zr oxide, surface characterization, co-precipitation, 5-arylidene-2,4-thiazolidinedione

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Acknowledgements

The authors are grateful to the Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, for providing laboratory facilities. One of the authors (S.B. Rathod) would like to acknowledge the university authorities for awarding a Golden Jubilee research fellowship.

 

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Received 3 May 2012
Revised 12 June 2012
Accepted 25 June 2012

 

 

* To whom correspondence should be addressed. E-mail: mkl_chem@yahoo.com