Conclusions
-
1.
In. the reactions of dehydration of pentanol-1 and isomerization of pentene-1, the catalytic activity of zeolites with divalent cations (zinc and magnesium) is higher than that with univalent cations (sodium). Zinc forms of zeolite are more active than magnesium forms.
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2.
A correlation is observed between the catalytic activity of zeolite in the dehydration of pentanol-1 and the degree of cationic exchange of sodium for zinc or magnesium.
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3.
The catalytic activity of zeolite in the reaction of displacement of the double bond of pentene-1 is a linear function of the degree of cationic exchange.
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4.
When the degree of cationic exchange is increased, the number of acid centers of the zeolites increases proportionately. The distribution of the centers according to their maximum acid strength varies little in this case.
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5.
There is a direct correlation between the activity of zeolites in the reactions of dehydration of alcohol and isomerization ofα-olefin and their acidity, determined by the method of indicator titration.
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6.
The acid nature of the activity of zeolites is also confirmed by the deactivating action of pyridine.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 780–786, April, 1968.
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Sharf, V.Z., Freidlin, L.K., Samokhvalov, G.I. et al. Investigation of the relationship between the acid nature of zeolites and their catalytic activity in reactions of dehydration of pentanol-1 and isomerization of pentene-1. Russ Chem Bull 17, 752–756 (1968). https://doi.org/10.1007/BF00905746
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DOI: https://doi.org/10.1007/BF00905746