2-(2-Hydroxyethyl)pyridine was dehydrated to 2-vinylpyridine in liq. phase over solid acid catalysts, with very high selectivity and fairly good reaction rate at relatively low reaction temp. (160°C). The catalytic activity is well correlated with the presence on the catalyst surface of medium to weak Bronsted acid sites. The anal. of "coke" left behind onto the catalyst and the effect of partial poisoning of catalytic activity by CO2 indicate that the reaction takes place through two mechanisms, involving either a Bronsted acid site or a couple of acid-base sites.
Dehydration of 2-(2-hydroxyethyl)-pyridine to 2-vinyl-pyridine over solid acid catalysts / L. Forni, D. Moscotti, E. Selli, I. Belegridi, M. Guisnet, D. Rohan, B. Gigante, C. Coutanceau, J. Silva, F. Alvarez - In: Studies in Surface Science and Catalysis, 108(Heterogeneous Catalysis and Fine Chemicals IV)[s.l] : Elsevier, 1997. - ISBN 0-444-82390-5. - pp. 563-570 (( convegno 4th International Symposium on Heterogeneous Catalysis and Fine Chemicals tenutosi a BASEL, SWITZERLAND nel SEP 08-12, 1996.
Dehydration of 2-(2-hydroxyethyl)-pyridine to 2-vinyl-pyridine over solid acid catalysts
L. ForniPrimo
;E. Selli;
1997
Abstract
2-(2-Hydroxyethyl)pyridine was dehydrated to 2-vinylpyridine in liq. phase over solid acid catalysts, with very high selectivity and fairly good reaction rate at relatively low reaction temp. (160°C). The catalytic activity is well correlated with the presence on the catalyst surface of medium to weak Bronsted acid sites. The anal. of "coke" left behind onto the catalyst and the effect of partial poisoning of catalytic activity by CO2 indicate that the reaction takes place through two mechanisms, involving either a Bronsted acid site or a couple of acid-base sites.
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