Abstract
The rates of CO oxidation on the (110) and (111) planes of rhodium have been directly compared using a thermal molecular beam reactor. When the surfaces are largely covered by CO the reaction rate is the same on the two crystal planes. At higher temperatures, where CO desorbs and the surface becomes oxygen covered, the reaction becomes structure sensitive, being markedly faster on the more open (110) plane.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
K.C. Taylor,Catalysis, Vol. 5, eds. J.R. Anderson and M. Boudart (Springer, Berlin, 1984) p. 119.
C.T. Campbell, S.-K. Shi and J.M. White, Appl. Surf. Sci. 2 (1979) 382.
C.T. Campbell, S.-K. Shi and J.M. White, J. Phys. Chem. 83 (1979) 2255.
Y. Kim, S.-K. Shi and J.M. White, J. Catal. 61 (1980) 374.
S.H. Oh, G.B. Fisher, J.E. Carpenter and D.W. Goodman, J. Catal. (1986) 360.
C. Peden, D.W. Goodman, D.S. Blair, P.J. Berlowitz, G.B. Fisher and S.H. Oh, J. Phys. Chem. 92 (1988) 1563.
S. Schwartz, L.D. Schmidt and G.B. Fisher, J. Phys. Chem. 90 (1986) 6194.
M. Bowker, Q. Guo and R.W. Joyner, Surf. Sci. 280 (1993) 50.
M. Bowker, P.D.A. Pudney and C.J. Barnes, J. Vac. Sci. Technol. A8 (1990) 816.
M. Bowker, Q. Guo, Y. Li and R.W. Joyner, to be published.
E. Schwarz, J. Lenz, H. Wohlgemuth and K. Christmann, Vacuum 41 (1990) 167.
M. Bowker, Q. Guo and R.W. Joyner, Surf. Sci. 253 (1991) 33.
T.W. Root, L.D. Schmidt and G.B. Fisher, Surf. Sci. 134 (1983) 30.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bowker, M., Guo, Q., Li, Y. et al. Structure sensitivity in CO oxidation over rhodium. Catal Lett 18, 119–123 (1993). https://doi.org/10.1007/BF00769504
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00769504