oa South African Journal of Chemistry - Preparation of Mg-doped Ce-Zr solid catalysts and their catalytic potency for the synthesis of 5-arylidene-2,4-thiazolidinediones via Knoevenagel condensation : research article
|Article Title||Preparation of Mg-doped Ce-Zr solid catalysts and their catalytic potency for the synthesis of 5-arylidene-2,4-thiazolidinediones via Knoevenagel condensation : research article|
|© Publisher:||South African Chemical Institute (SACI)|
|Journal||South African Journal of Chemistry|
|Affiliations||1 Commerce and Science College, India, 2 Dr. Babasaheb Ambedkar Marathwada University, India, 3 Dr. Babasaheb Ambedkar Marathwada University, India and 4 Dr. Babasaheb Ambedkar Marathwada University, India|
|Publication Date||Jan 2012|
|Pages||196 - 201|
|Keyword(s)||5-arylidene-2,4-thiazolidinedione, Co-precipitation, Mg-doped Ce-Zr oxide and Surface characterization|
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 Ce1Mg0.6Zr0.4O2. 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.
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