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Effect of External Acid Site Content in PdHZSM-5 Catalyst on Its Activity and Selectivity in Hydroisomerization of n-Hexane

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Abstract

We have studied the relationship between the external acidity and the catalytic properties of zeolite PdHZSM-5 (Si/Al = 21) in hydroconversion of n-hexane. We have established that decreasing the external H-site content by 5-9 μmol/g at 548 K leads to an increase in conversion by 18-19% and a decrease in the selectivity of the catalyst with respect to the isomerization products by 47-70%. We suggest an explanation for this substantial effect of the external H-sites on the activity and selectivity of the catalyst.

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Authors and Affiliations

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

    V. V. Bobik & F. M. Bobonich

  2. Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, 1 Murmans'ka Vul., 02660, Kyiv, Ukraine

    Yu. G. Voloshina

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  1. V. V. Bobik
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  2. Yu. G. Voloshina
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  3. F. M. Bobonich
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Bobik, V.V., Voloshina, Y.G. & Bobonich, F.M. Effect of External Acid Site Content in PdHZSM-5 Catalyst on Its Activity and Selectivity in Hydroisomerization of n-Hexane. Theoretical and Experimental Chemistry 40, 320–325 (2004). https://doi.org/10.1023/B:THEC.0000049079.75039.a5

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