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Impact of Coke Deposition on Diffusion of Methanol in a Pellet of Zeolite-Containing Catalyst

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Theoretical and Experimental Chemistry Aims and scope

The diffusion of methanol in a catalyst pellet containing H-ZSM-5 zeolite and aluminum oxide before and after coke deposition in the conversion of methyl alcohol into dimethyl ether and C2–C4 alkenes is studied. It is shown that the diffusion regime of methanol is anomalous and that the anomalous diffusion exponent does not depend on coke deposition of the catalyst. The discovered features are caused by the adsorption of methanol in the micropores, access to which is not fully restricted as a result of coke deposition.

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Authors and Affiliations

  1. L. V. Pysarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Nauky Ave., 31, Kyiv, 03028, Ukraine

    A. A. Zhokh, V. I. Gritsenko & P. E. Strizhak

Authors
  1. A. A. Zhokh
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  2. V. I. Gritsenko
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  3. P. E. Strizhak
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Correspondence to A. A. Zhokh.

Additional information

Translated from Teoreticheskaya i Éksperimental’naya Khimiya, Vol. 56. No. 2, pp. 117-121, March-April, 2020.

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Zhokh, A.A., Gritsenko, V.I. & Strizhak, P.E. Impact of Coke Deposition on Diffusion of Methanol in a Pellet of Zeolite-Containing Catalyst. Theor Exp Chem 56, 124–129 (2020). https://doi.org/10.1007/s11237-020-09645-3

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  • DOI: https://doi.org/10.1007/s11237-020-09645-3

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