Dynamics of D resurfacing on Ni(III) and reaction with chemisorbed D

被引：8

作者：

Wright, S ^{[1
]}

Skelly, JF ^{[1
]}

Hodgson, A ^{[1
]}

机构：

[1] Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 364卷 / 5-6期

关键词：

D O I：

10.1016/S0009-2614(02)01400-8

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：

Recombination of D atoms resurfacing from the octahedral subsurface site on Ni(1 11) has been investigated as a model for the reaction of sub-surface D. The desorbing flux is made up of two components: translationally hot D-2 formed in the reaction of energetic D atoms from the subsurface with chernisorbed D and a low energy component attributed to recombination of thermalised D. The D-2 product shows no preferred scattering direction, consistent with a 'hot precusor' mechanism for reaction. Resurfacing D atoms scatter across the D/Ni(1 1 1) surface, losing any stereochemical memory of the resurfacing site before they react with chemisorbed D. (C) 2002 Published by Elsevier Science B.V.

引用

页码：522 / 527

页数：6

共 27 条

[1]

Alefeld G., 1978, Hydrogen in Metals I: Basic Properties

[2] Hydrogen transport in nickel (111) [J].

Baer, R ;

Zeiri, Y ;

Kosloff, R .

PHYSICAL REVIEW B, 1997, 55 (16) :10952-10974

[3] Quantum dissipative dynamics of adsorbates near metal surfaces: A surrogate Hamiltonian theory applied to hydrogen on nickel [J].

Baer, R ;

Kosloff, R .

JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (21) :8862-8875

[4] On the recombinative desorption of N-2 from Ag(111) [J].

Carter, RN ;

Murphy, MJ ;

Hodgson, A .

SURFACE SCIENCE, 1997, 387 (1-3) :102-111

[5] HYDROGEN IMPLANTATION IN NI(111) - A STUDY OF H-2 DESORPTION DYNAMICS FROM THE BULK [J].

CHORKENDORFF, I ;

RUSSELL, JN ;

YATES, JT .

SURFACE SCIENCE, 1987, 182 (03) :375-389

[6] ON PRECURSOR MECHANISMS FOR SURFACE-REACTIONS [J].

HARRIS, J ;

KASEMO, B .

SURFACE SCIENCE, 1981, 105 (2-3) :L281-L287

[7] State resolved desorption measurements as a probe of surface reactions [J].

Hodgson, A .

PROGRESS IN SURFACE SCIENCE, 2000, 63 (1-2) :1-61

[8] HYDROGEN EMBEDDED IN NI - PRODUCTION BY INCIDENT ATOMIC-HYDROGEN AND DETECTION BY HIGH-RESOLUTION ELECTRON-ENERGY LOSS [J].

JOHNSON, AD ;

MAYNARD, KJ ;

DALEY, SP ;

YANG, QY ;

CEYER, ST .

PHYSICAL REVIEW LETTERS, 1991, 67 (07) :927-930

[9] THE CHEMISTRY OF BULK HYDROGEN - REACTION OF HYDROGEN EMBEDDED IN NICKEL WITH ADSORBED CH3 [J].

JOHNSON, AD ;

DALEY, SP ;

UTZ, AL ;

CEYER, ST .

SCIENCE, 1992, 257 (5067) :223-225

[10] Heterogeneous catalysis through subsurface sites [J].

Ledentu, V ;

Dong, W ;

Sautet, P .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (08) :1796-1801

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