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Kinetic studies on the hydrogenation of 1,3-butadiene, 1-butyne and their mixtures

Schäfer, Peter ; Wuchter, Nils ; Gaube, Johann (2000)
Kinetic studies on the hydrogenation of 1,3-butadiene, 1-butyne and their mixtures.
In: Studies in Surface Science and Catalysis, 130
doi: 10.1016/S0167-2991(00)80770-3
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

The kinetics of the heterogeneously catalyzed hydrogenation of 1,3-butadiene and mixtures of 1-butyne/1,3-butadiene have been investigated for a Pd/Al2O3 egg-shell catalyst. In contrast to the hydrogenation of butenes, the gas phase hydrogenation of 1,3-butadiene shows a restricted reproducibility. This behaviour is traced back to the very dense layer of strongly and rigidly adsorbed Butadiene molecules. The reaction order of the 1,3-butadiene hydrogenation is >1 with respect to hydrogen and <0 with respect to 1,3-butadiene. The hydrogenation of 1-butyne/1,3-butadiene mixtures gains an, increasing preference for the 1-butyne hydrogenation with increasing dilution of 1-butyne and decreasing partial pressure of hydrogen. The assumption is made that in this case 1-butyne is hydrogenated on active sites that are not accessible by 1,3-butadiene.

Typ des Eintrags: Artikel
Erschienen: 2000
Autor(en): Schäfer, Peter ; Wuchter, Nils ; Gaube, Johann
Art des Eintrags: Bibliographie
Titel: Kinetic studies on the hydrogenation of 1,3-butadiene, 1-butyne and their mixtures
Sprache: Englisch
Publikationsjahr: 14 Juli 2000
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Studies in Surface Science and Catalysis
Jahrgang/Volume einer Zeitschrift: 130
Buchtitel: 12th International Congress on Catalysis, Proceedings of the 12th ICC
DOI: 10.1016/S0167-2991(00)80770-3
Kurzbeschreibung (Abstract):

The kinetics of the heterogeneously catalyzed hydrogenation of 1,3-butadiene and mixtures of 1-butyne/1,3-butadiene have been investigated for a Pd/Al2O3 egg-shell catalyst. In contrast to the hydrogenation of butenes, the gas phase hydrogenation of 1,3-butadiene shows a restricted reproducibility. This behaviour is traced back to the very dense layer of strongly and rigidly adsorbed Butadiene molecules. The reaction order of the 1,3-butadiene hydrogenation is >1 with respect to hydrogen and <0 with respect to 1,3-butadiene. The hydrogenation of 1-butyne/1,3-butadiene mixtures gains an, increasing preference for the 1-butyne hydrogenation with increasing dilution of 1-butyne and decreasing partial pressure of hydrogen. The assumption is made that in this case 1-butyne is hydrogenated on active sites that are not accessible by 1,3-butadiene.

Fachbereich(e)/-gebiet(e): 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie
07 Fachbereich Chemie
Hinterlegungsdatum: 10 Jan 2011 13:41
Letzte Änderung: 05 Mär 2013 09:44
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