Abstract
Cerium incorporated MCM-22 (Ce-MCM-22) was successfully synthesized by hydrothermal method. Incorporation of Ce is achieved by the optimization of method for synthesis by varying (i) Concentration of sructure directing agent or template, (ii) Silica to ceria ratio and (iii) Crystallization time. Change in phases during crystallization, variation of physico-chemical properties with respect to gel composition and framework substitution of cerium are evidenced by XRD, UV–Vis DRS, SEM, N2 adsorption, FT-IR, Ammonia TPD and solid-state MAS-NMR characterisations. It is found that incorporation of Ce into the zeolite frame work has successfully occurred by simple method of optimisimg molar gel composition. Interestingly, prepared samples of Ce-MCM-22 have also been found to be more effective catalysts for the removal of trace olefins from aromatic streams.
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