Abstract
Interaction of naphthalene, α-methylnaphthalene, and hexamethylbenzene with OH groups of SiO2, HNaY and H-ZSM-5 zeolites was studied by IR spectroscopy. The results are compared with data obtained for other types of organic bases. Specificity in the generation of H-complexes of olefins, arenes, naphthalenes, N- and O-bases with Brönsted surface sites was elucidated. Each type of base appears to have its particular correlation of (PAa-PAb) and the shift of ΔυOH band in H-complexes. It has been found that if (PAa-PAb) is less than 85±5 kcal/mol, the formation of ion pairs is thermodynamically more favorable than that of H-complexes for all types of organic compounds.
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Paukshtis, E.A., Malysheva, L.V. & Stepanov, V.G. Interaction of aromatics with Brönsted sites in zeolites: Demarcation line between regions of stable existence of H-complexes and ion pairs for various types of bases. React Kinet Catal Lett 65, 145–152 (1998). https://doi.org/10.1007/BF02475328
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DOI: https://doi.org/10.1007/BF02475328