Catalysis Letters

, Volume 29, Issue 3, pp 371–378

Hydrogenation of 3-methyl-butenal on Pt(110); comparison with Pt(111)

  • C. M. Pradier
  • T. Birchem
  • Y. Berthier
  • G. Cordier
Article

DOI: 10.1007/BF00807116

Cite this article as:
Pradier, C.M., Birchem, T., Berthier, Y. et al. Catal Lett (1994) 29: 371. doi:10.1007/BF00807116

Abstract

The gas-phase hydrogenation of 3-methyl-butenal or prenal, was studied, at temperature equal to 353 K, on the (110) plane of platinum and compared to previous results obtained on Pt(111). The selectivity was found to be very structure sensitive. This has been ascribed to steric factors which determine when the unsaturated bond is on a substituted carbon atom. The combination of the use of well characterized surfaces as catalysts, and of the determination of the kinetics of the reaction led us to propose a Langmuir-Hinshelwood type mechanism. The nature of the reaction intermediates, di-σ or tetra-σ activated adsorbed species, depends upon the reactant pressure and upon the geometry of the surface. This catalytic study on model surfaces is of particular interest in understanding the selectivity of real catalysts whose atomic arrangement is possibly defined and controlled.

Keywords

unsaturated aldehydehydrogenationplatinumsingle crystalsstructure sensitivity

Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • C. M. Pradier
    • 3
  • T. Birchem
    • 1
  • Y. Berthier
    • 1
  • G. Cordier
    • 2
    • 1
  1. 1.Laboratoire de Physico-Chimie des SurfacesENSCPParisFrance
  2. 2.Rhône-Poulenc IndustrialisationDécines-CharpieuFrance
  3. 3.Material PhysicsRoyal Institute of TechnologyStockholmSweden