Catalysis Letters

, Volume 4, Issue 1, pp 37–42 | Cite as

Hydrogenation of but-1-yne on platinum catalyst: Role of reversible adsorbed hydrocarbon deposit

  • Philippe Maetz
  • Raymonde Touroude


By using rectangular pulses of but-1-yne carried by H2 or H2-He mixtures over a platinum catalyst, it was possible to visualize the build-up of an adsorbed hydrocarbon deposit which is a necessary condition for getting a selective catalyst (on platinum, but-1-ene selectivity is 90%). Such a deposit is reversibly adsorbed since it desorbs as hydrogenated butyne molecules when the butyne pressure drops at the end of the pulse. Moreover it was shown, during stationary phase, that the sudden fall in the selectivity at high but-1-yne conversion, is due to the desorption of such reversibly adsorbed molecules.


Hydrogenation Physical Chemistry Platinum Catalysis Hydrocarbon 
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Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1990

Authors and Affiliations

  • Philippe Maetz
    • 1
  • Raymonde Touroude
    • 1
  1. 1.Laboratoire de Catalyse et Chimie des SurfacesU.A. 423, Université Louis PasteurStrasbourgFrance

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