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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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| Authors: | Bobik V. V. Voloshina Yu. G. Bobonich F. M. |
| Affiliation: | (1) L. V. Pysarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, 31 Nauky Prospekt, 03028, Kyiv, Ukraine;(2) Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, 1 Murmans'ka Vul., 02660, Kyiv, Ukraine |
| 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  mol/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. |
| Keywords: | external acid sites potentiometric titration hydroconversion of n-hexane ZSM-5 |
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