Abstract

Zh. Kh. Tashmukhambetova¹, N. K.  Zhakirova¹, L. R. Sassykova¹, K. A. Kadirbekov², Y. A. Aubakirov¹, A. S. Zhumakanova³ and A. M. Nalibayeva³

DOI : http://dx.doi.org/10.13005/ojc/330613

The work aim  was the preparation of cracking catalysts on the base of the natural zeolite from the Shankanay field (Kazakhstan), modified with mineral acids, organic acids and heteropolyacids (HPA); the research of the catalysts by physicochemical methods of investigation. Accordingly to IR spectroscopic analysis during decationization and dealumination, the natural zeolite retains its crystalline structure. Presumably formation of a bond of HPA with zeolite proceeds at modifying the chosen zeolite by HPA. It was found from the EM data the high degrees of dispersion and distribution of particles of PW₁₂-HPA on the surface of clinoptilolite. EM images of a thin layer of the catalyst on the base of PW₁₂-HPA and zeolite activated by an acid, show spots with the various magnitudes and different shapes and contrasts. The experiments on EDAX-spectrometer demonstrate that these spots have the same compositions that are identical to the PW₁₂-HPA.

catalysis; heteropolyacids; zeolite of the Shankanay field; cracking

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