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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