Das Temperaturverhalten der Protonenresonanz von adsorbiertem Benzol in den Hohlräumen synthetischer Zeolithe vom Typ des Faujasits / The Temperature Behaviour of the Proton Resonance of Adsorbed Benzene in the Holes of Synthetic Zeolites of the Faujasite-Type

Abstract

In the present paper, the behaviour of the proton magnetic resonance of adsorbed benzene in the holes of two faujasite samples with different Si/Al-ratios is measured. The second moments at low temperatures give evidence that at low coverages the adsorbed molecules rotate about an axis in the plane of the molecules. At coverages above 4,5 benzene molecules in a large cavity, this rotation is hindered. At higher temperatures an additional mobility is observed in the resonance spectra, which seems to consist of jumps between the sorption sites of the molecules of the benzene.