Six-dimensional quantum dynamics of adsorption and desorption of H-2 at Pd(100), no need for a molecular precursor adsorption state

被引:48
作者
Gross, A
Wilke, S
Scheffler, M
机构
[1] Fritz-Haber-Inst. Max-Planck-Gesell., D-14195 Berlin-Dahlem
关键词
atom-solid interactions; scattering; diffraction; chemisorption; density functional calculations; hydrogen; low index single crystal surfaces; metallic surfaces; models of surface chemical reactions; molecule-solid reactions; palladium; quantum effects;
D O I
10.1016/0039-6028(96)00232-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report six-dimensional quantum dynamical calculations of dissociative adsorption and associative desorption of the system H-2/Pd(100) using an ab initio potential energy surface. We focus on rotational effects in the steering mechanism, which is responsible for the initial decrease of the sticking probability with kinetic energy. In addition, steric effects are briefly discussed.
引用
收藏
页码:614 / 618
页数:5
相关论文
共 44 条
[21]   THE ROLE OF LATERAL SURFACE CORRUGATION FOR THE QUANTUM DYNAMICS OF DISSOCIATIVE ADSORPTION AND ASSOCIATIVE DESORPTION [J].
GROSS, A .
JOURNAL OF CHEMICAL PHYSICS, 1995, 102 (12) :5045-5058
[22]   6-DIMENSIONAL QUANTUM DYNAMICS OF ADSORPTION AND DESORPTION OF H-2 AT PD(100) - STEERING AND STERIC EFFECTS [J].
GROSS, A ;
WILKE, S ;
SCHEFFLER, M .
PHYSICAL REVIEW LETTERS, 1995, 75 (14) :2718-2721
[23]   HIGH-DIMENSIONAL QUANTUM DYNAMICS OF ADSORPTION AND DESORPTION OF H-2 AT CU(111) [J].
GROSS, A ;
HAMMER, B ;
SCHEFFLER, M ;
BRENIG, W .
PHYSICAL REVIEW LETTERS, 1994, 73 (23) :3121-3124
[24]   THE INFLUENCE OF POTENTIAL-ENERGY SURFACE TOPOLOGIES ON THE DISSOCIATION OF H-2 [J].
HALSTEAD, D ;
HOLLOWAY, S .
JOURNAL OF CHEMICAL PHYSICS, 1990, 93 (04) :2859-2870
[25]   MULTIDIMENSIONAL POTENTIAL-ENERGY SURFACE FOR H-2 DISSOCIATION OVER CU(111) [J].
HAMMER, B ;
SCHEFFLER, M ;
JACOBSEN, KW ;
NORSKOV, JK .
PHYSICAL REVIEW LETTERS, 1994, 73 (10) :1400-1403
[26]   DYNAMICS OF GAS-SURFACE REACTIONS [J].
HOLLOWAY, S .
SURFACE SCIENCE, 1994, 299 (1-3) :656-666
[27]   THE DYNAMICS OF H-2 DISSOCIATION ON NI(100) - A QUANTUM-MECHANICAL STUDY OF A RESTRICTED TWO-DIMENSIONAL MODEL [J].
JACKSON, B ;
METIU, H .
JOURNAL OF CHEMICAL PHYSICS, 1987, 86 (02) :1026-1035
[28]   Force calculation and atomic-structure optimization for the full-potential linearized augmented plane-wave code WIEN [J].
Kohler, B ;
Wilke, S ;
Scheffler, M ;
Kouba, R ;
AmbroschDraxl, C .
COMPUTER PHYSICS COMMUNICATIONS, 1996, 94 (01) :31-48
[29]   VIBRATIONALLY ASSISTED STICKING, TUNNELING AND ISOTOPE EFFECT FOR HYDROGEN ON CU SURFACES [J].
KUCHENHOFF, S ;
BRENIG, W ;
CHIBA, Y .
SURFACE SCIENCE, 1991, 245 (03) :389-400
[30]   DISSOCIATIVE ADSORPTION OF H-2 ON CU(110) - A MIXED QUANTUM-CLASSICAL STUDY [J].
KUMAR, S ;
JACKSON, B .
JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (08) :5956-5964