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Volumn 108, Issue 20, 1998, Pages 8640-8650

Collision-induced activation of the β-hydride elimination reaction of isobutyl iodide dissociatively chemisorbed on Al(111)

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EID: 0000209896     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.476294     Document Type: Article
Times cited : (8)

References (70)
  • 6
    • 0040417179 scopus 로고
    • edited by R. J. Madix, Springer, Berlin
    • L. H. Dubois, B. E. Bent, and R. G. Nuzzo, Surface Reactions, edited by R. J. Madix, (Springer, Berlin, 1994), Vol. 34, p. 135.
    • (1994) Surface Reactions , vol.34 , pp. 135
    • Dubois, L.H.1    Bent, B.E.2    Nuzzo, R.G.3
  • 21
  • 56
    • 0001690543 scopus 로고
    • Effective masses were determined experimentally through detailed scattering of inert gas atoms from platinum and gold surfaces. H. F. Winters, H. Coufal, C. T. Rettner, and D. S. Bethune, Phys. Rev. B 41, 6240 (1990).
    • (1990) Phys. Rev. B , vol.41 , pp. 6240
    • Winters, H.F.1    Coufal, H.2    Rettner, C.T.3    Bethune, D.S.4
  • 57
    • 0003470014 scopus 로고
    • Cornell University Press, Ithaca
    • 4 m/s. Therefore, in the typical interaction time period of ∼30-50 fs. the phonons interact with a region 3-5 Å wide. The lattice constant for aluminum is 4.02 Å. Hence, at the high energies under consideration, the effective mass of the metal is only of the order of 1-2 atomic masses. By way of reference, an effective mass of one Al atom was estimated from the collision-induced dissociation dynamics of Al clusters. N. W. Ashcroft and N. D. Mermin, Solid State Physics (Cornell University Press, Ithaca, 1976).
    • (1976) Solid State Physics
    • Ashcroft, N.W.1    Mermin, N.D.2
  • 60
    • 0029345590 scopus 로고
    • -2 eV (Ref. 57). It can be easily seen as a result that the contribution from the surface temperature to the final energy of the scattering atom is not significant as compared to the incident translational energy of that atom. Hence, for all practical purposes the surface temperature factor can be neglected safely as we have already done in Eq. (3). H. Gades and H. M. Urbassek, Appl. Phys. A 61, 39 (1995).
    • (1995) Appl. Phys. A , vol.61 , pp. 39
    • Gades, H.1    Urbassek, H.M.2
  • 63
    • 0001524175 scopus 로고
    • Iodine might act to block sites in what would be considered a "cage effect" on the remaining species. The consequence this would have on surface diffusion and reaction has not been established. C. J. Jenks, A. Paul, L. A. Smoliar, and B. E. Bent, J. Phys Chem. 98, 572 (1994).
    • (1994) J. Phys Chem. , vol.98 , pp. 572
    • Jenks, C.J.1    Paul, A.2    Smoliar, L.A.3    Bent, B.E.4
  • 64
    • 11744311779 scopus 로고    scopus 로고
    • note
    • This is reflected in the reduction obtained for m/e=41 TPRS intensities as well. It is observed that the intensity reduction for this mass is ∼18% in the case of CID which is in close agreement with the difference between the integrated TPRS intensities corresponding to 8 and 2 L exposures (∼20%) obtained from the exposure dependent thermal experiments.


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