Abstract
The decomposition of C2H5I on Ag(111) has been studied using temperature programmed desorption (TPD), work-function change measurements (ΔΦ) and X-ray photoelectron spectroscopy (XPS). Adsorption of C2H5I at 100 K is mostly molecular with little dissociation. C-I bond cleavage starts around 110 K. Below 1 monolayer coverage, all adsorbed C2H5I(a) dissociates to C2H5(a) and I(a) during TPD. C2H5(a) undergoes only recombination, producing gas phase butane (C4H10) around 190 K. No C-H or C-C bond cleavage takes place. On D/Ag(111), hydrogenation of C2H5(a) to C2H5(g) occurs readily between 150 and 220 K.
Similar content being viewed by others
References
M.A. Henderson, G.E. Mitchell and J.M. White, Surface Sci. 184 (1987) L325.
X.-L. Zhou and J.M. White, Surface Sci. 194 (1988) 438.
X.-L. Zhou and J.M. White, Chem. Phys. Letters 142 (1987) 376.
X.-L. Zhou, C. Yoon and J.M. White, Surface Sci. 206 (1988) 379.
X.-L. Zhou, F. Solymosi, P.M. Blass, K.C. Cannon and J.M. White, Surface Sci. (in press).
S.A. Costello, B. Roop, Z.-M. Liu and J.M. White, J. Phys. Chem. 92 (1988) 1019.
Y. Zhou, W.-M. Feng, M.A. Henderson, B. Roop and J.M. White, J. Am. Chem. Soc. 110 (1988) 4447.
Z.-M. Liu, S. Akhter, B. Roop and J.M. White, J. Am. Chem. Soc. 110 (1988) 8708.
X.-L. Zhou and J.M. White, manuscript in preparation.
Z.-M. Liu, S.A. Costello, B. Roop, S.R. Coon, S. Akhter and J.M. White, J. Phys. Chem. (in press).
K.G. Lloyd, A. Campion and J.M. White, Catal. Lett. 2 (1989) 105.
K.G. Lloyd, B. Roop, A. Campion and J.M. White, Surface Sci. (in press).
J.B. Benzinger and R.J. Madix, J. Catal. 65 (1980) 49.
R.G. Nuzzo and L.H. Dubois, J. Am. Chem. Soc. 108 (1986) 2881.
J.G. Chen, T.B. Beebe, Jr., J.E. Crowell and J.T. Yates, Jr., J. Am. Chem. Soc. 108 (1986) 2881.
A. Berko and F. Solymosi, J. Phys. Chem. 93 (1989) 12.
K.A.Magrini, J.L.Falconer, S. Gebhard and B.E. Koel, Surface Sci. (submitted).
T.M. Gentle, P. Soukiassian, K.P. Schuette, M.H. Bakshi and Z. Hurych, SurfaceSci. 202 (1988) L568.
E.P. Marsh, F.L. Tabares, M.R. Schneider and J.P. Cowin, J. Vac. Sci. Technol. A5 (1987) 519.
V.H. Grassian and G.C. Pimentel, J. Chem. Phys. 88 (1988) 4478, 4484.
B.E. Koel, D.E. Peebles and J.M. White, Surface Sci. 125 (1983) 709.
P.M. Blass, X.-L. Zhou and J.M. White, Surface Sci. (in press).
C.D. Wagner, W.M. Riggs, L.E. Davis, J.F. Moulder and G.E. Muilenberg,Handbook of X-ray Photoelectron Spectroscopy (Perkin-Elmer Corp., Eden Prairie, MN, 1979).
F.A.F. Cavalcanti, D.G. Blackmond, R. Oukaci, A. Sayari, A. Erdam-Senatalar and I. Wender, J. Catal. 113 (1988) 1.
X.-L. Zhou, J.M. White and B.E. Koel, Surface Sci. (in press).
G.C. Bond,Catalysis by Metals (Academic press, New York, 1962).
X.-L. Zhou, P.M. Blass, J.M. White and B.E. Koel, manuscript in preparation.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zhou, X.L., White, J.M. Thermal decomposition of C2H5I on Ag(111). Catal Lett 2, 375–384 (1989). https://doi.org/10.1007/BF00768180
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00768180