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Increase in the number of acid sites of a H-ZSM5 zeolite during the dehydration of ethanol

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Abstract

The activity of a H-ZSM5-90 for the dehydration of ethanol at 473 K increased with an increase in time on stream. The results of NH3-TPD and Ar adsorption showed that the number of acid sites of the H-ZSM5-90 increased during the dehydration. On the other hand, the activity and the number of acid sites of H-mordenite-90 were almost unchanged during the dehydration. Since the pre-treatment of the H-ZSM5-90 with ethylene at 473 K largely increased its activity for the dehydration of ethanol, it is suggested that a large number of new acid sites could be formed inside the pores of H-ZSM5-90 via the polymerization of ethylene produced by the dehydration of ethanol.

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References

  1. Takahara I., Saito M., Inaba M., Murata K. (2005) Catal. Lett. 105:249

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Authors and Affiliations

  1. Biomass Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba-shi, Ibaraki-ken, 305-8569, Japan

    Isao Takahara, Masahiro Saito, Megumu Inaba & Kazuhisa Murata

  2. Department of Science, Hokkaido University of Education, 1-2 Hachiman-cho, Hakodate, 040-8569, Japan

    Hiromi Matsuhashi

Authors
  1. Isao Takahara
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  2. Masahiro Saito
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  3. Hiromi Matsuhashi
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  4. Megumu Inaba
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  5. Kazuhisa Murata
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Correspondence to Isao Takahara.

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Takahara, I., Saito, M., Matsuhashi, H. et al. Increase in the number of acid sites of a H-ZSM5 zeolite during the dehydration of ethanol. Catal Lett 113, 82–85 (2007). https://doi.org/10.1007/s10562-007-9025-9

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  • DOI: https://doi.org/10.1007/s10562-007-9025-9

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