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Characterization of a few Mexican clays

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Abstract

The characterization of a few Mexican clays with chemical treatmentfor possible application as catalysers is shown. The natural clays are treatedwith H2 SO4 , HF, F3 CSO3 H, ClSO3 H, HClO4 and their behavior in reactions with some alcoholswas recorded. The analysis were made before and after using the clays as catalysers.The clays were characterized by Mössbauer spectroscopy, X-ray diffraction,X-ray fluorescence analysis, and differential thermo analysis. The predominantmineral species are: montmorillonite, christobalite and quartz. The main elementsare: Si, Al, Fe, Ca, K, etc. The Mössbauer results show mainly a paramagneticdoublet of Fe3+ . The clays behave similarly as described in theliterature.

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  1. Instituto de Quimica, UNAM, C.U. Coyoacán, 04510, México D.F

    O. L. Ruiz

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  1. O. L. Ruiz
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Ruiz, O.L. Characterization of a few Mexican clays. Journal of Radioanalytical and Nuclear Chemistry 250, 165–168 (2001). https://doi.org/10.1023/A:1013207719042

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