Abstract
The properties of the adsorbed NHx species (x=0,1,2,3) on platinum(111) and (100)‐(1×1) single‐crystal planes are studied by the semi‐empirical method of interacting bonds. Both surfaces reveal similar features. The adsorbed species NH and NH2 are stable on the surface, and stable NH3(ads) species cannot form. The NH2(ads) species is favourable in adsorbed hydrogen excess, but lack of the latter results in NHads becoming dominant. Both NH and NH2 species are expected to diffuse easily over the surface due to the small difference between their bond strengths to various adsorption sites.
Similar content being viewed by others
References
W.D. Mieher and W. Ho, Surf. Sci. 322 (1995) 151.
Y.-M. Sun, D. Sloan, H. Ihm and J.M. White, J. Vac. Sci. Technol. A 14 (1996) 1516.
D.Yu. Zemlyanov, M.Yu. Smirnov, V.V. Gorodetskii and J.H. Block, Surf. Sci. 329 (1995) 61.
D.Yu. Zemlyanov, M.Yu. Smirnov and V.V. Gorodetskii, Surf. Sci. 391 (1997) 37.
K.C. Taylor, Automotive Catalytic Converters (Springer, Berlin, 1984).
A.R. Cholach and N.N. Bulgakov, Catal. Lett. 48 (1997) 191.
A.R. Cholach, M.F.H. van Tol and B.E. Nieuwenhuys, Surf. Sci. 320 (1994) 281.
M.F.H. van Tol, A. Gielbert and B.E. Nieuwenhuys, Catal. Lett. 16 (1992) 297.
N.N. Bulgakov, Yu.A. Borisov and V.V. Popovskii, Kinet. Katal. 14 (1973) 395 (in Russian).
N.N. Bulgakov, V.Yu. Aleksandrov and V.V. Popovskii, React. Kinet. Catal. Lett. 4 (1976) 473.
N.N. Bulgakov, V.Yu. Aleksandrov and V.V. Popovskii, React. Kinet. Catal. Lett. 8 (1978) 53, 59, 65.
Yu.I. Yermakov, A.N. Startsev, V.A. Burmistrov, O.N. Shumilo and N.N. Bulgakov, Appl. Catal. 18 (1985) 33.
N.N. Bulgakov and A.N. Startsev, Mendeleev Commun. 1 (1991) 98.
M.Kh. Karapetyants and M.L. Karapetyants, Basic Thermodynamic Constants of Inorganic and Organic Materials (Khimiya, Moscow, 1969) p. 218 (in Russian).
G.B. Bokii, Introduction in Crystallographic Chemistry (Moscow University Press, Moscow, 1954) p. 358 (in Russian).
A.I. Boldyrev, V.I. Avdeev, N.N. Bulgakov and I.I. Zakharov, Kinet. Katal. 17 (1976) 706 (in Russian).
V.I. Vedeneev, L.V. Gurvich, V.N. Kondratyev, V.A. Medvedev and E.L. Frankevich, in: Energy of Chemical Bonds Dissociation, Ionization Potentials and Affinity to Electron, ed. V.N. Kondratyev (Akad. Nauk, Moscow, 1962) p. 144; G.V. Samsonov, ed., Handbook on Properties of the Elements, Vol. 1 (Metallurgiya, Moscow, 1976) p. 159.
J.L. Gland and E.B. Kollin, Surf. Sci. 104 (1981) 478.
K. Schwaha and E. Bechtold, Surf. Sci. 66 (1977) 383.
S.J. Lombardo, M. Slinko, T. Fink, T. Löher, H.H. Madden, F. Esch, R. Imbihl and G. Ertl, Surf. Sci. 269/270 (1992) 481.
D.Yu. Zemlyanov, M.Yu. Smirnov and V.V. Gorodetskii, Catal. Lett. 28 (1994) 153.
Z. Knor, Surf. Sci. 154 (1985) L233.
B. Hellsing, B. Kasemo and V.P. Zhdanov, J. Catal. 132 (1991) 210.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cholach, A., Bulgakov, N. Adsorbed NHx species on Pt(111) and Pt(100) surfaces studied by the semi‐empirical method of interacting bonds. Catalysis Letters 58, 183–187 (1999). https://doi.org/10.1023/A:1019094304535
Issue Date:
DOI: https://doi.org/10.1023/A:1019094304535