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Deuterium exchange reaction of ethylbenzene over an Fe2O3−K2CO3−Cr2O3 catalyst (1994)

Miura, Hiroshi ; Ansai, Ryuichi ; Kawai, Hiroiku

Springer

Reaction kinetics and catalysis letters 53 (1994), S. 323-329

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ISSN: 1588-2837

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract Isotope exchange reaction of ethylbenzene with water or hydrogen has been examined over Fe2O3−K2CO3−Cr2O3 catalyst. The participation of the hydrogen attached to α-carbon or phenyl group was observed. The exchange rate of the α-hydrogen was compared for different alkylbenzenes and found that toluene was the most active, whereas cumene was inactive. This order suggested that the α-hydrogen dissociated as a proton. π-Adsorbed state was supposed as an intermediate of dehydrogenation, which dissociates the α-hydrogen reversibly as a proton on a basic site. Including the results of exchange reaction of styrene, the overall route of dehydrogenation is discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02073038

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