Investigation Of The Catalytic Nature Of Fe3-exchanged Clays On Cyclohexanol And Cyclohexene

The investigation of the catalytic nature of cation exchanged clays on some organicrnreactions was the core objective in this project. Important features of the three clays,rnlocal clay, drilling mud bentonite, and bentonite(BDH) with respect to free swelling,rnexchangeable bases, CEC, acidity measurement, IR spectra have been studied. Thernstudy of the catalytic activities of Fe3rn+ -exchanged clays(local clay, drilling mudrnbentonite and BDH-bentonite) was carried out on cyclohexanol and cyclohexenernunder reflux conditions. As shown by gas chromatographic analysis, the Fe3rn+_rnexchanged clays were able to convert the substrates into new products.rnBy using retention time coincidence tests and co-injection peak enhancementrntechnique, one of the products obtained from cyclohexanol with the three Fe3rn+ -cationrnexchanged clays was identified to be cyclohexene. The second product was notrnidentified but suggested to be dicyclohexyl ether. In the case of refluxingrncyclohexene, retention time coincidence test reveals that no cyclohexanol was formedrnas a product. But other unidentified products were formed as shown by thernappearance of new peaks. The ferric cation exchanged clays have dehydratedrncyclohexanol and could not hydrate cyclohexene. Therefore, the clays may bernidentified as dehydrating agents.

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