DOI: 10.1063/1.434162. The adsorption of hydrocarbons on platinum studied by low-energy electron diffraction intensities. The ordered (2×2) overlayers of acetylene and ethylene on the (111) crystal face of platinum

The adsorption of hydrocarbons on platinum studied by low-energy electron diffraction intensities. The ordered (2×2) overlayers of acetylene and ethylene on the (111) crystal face of platinum

10.1063/1.434162

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The intensities of the low-energy electron diffraction beams back-scattered from the ordered (2×2) overlayers of acetylene and ethylene on the platinum (111) crystal face are measured by a photographic technique. The intensities are presented in an appendix in the form of normalized diffraction beam intensity versus incident electron energy (I-V curves). Acetylene spontaneously forms the ordered (2×2) adsorbate on platinum at 300 K and low exposure under ultrahigh vacuum conditions. The intensity profiles reveal that this structure is metastable; and upon heating to 350–400 K for 1 hr it undergoes a transformation to a stable structure with the same (2×2) unit cell size. The acetylene transformation is thought to involve a strengthening of the carbon–platinum bond accompanied by an expansion of the carbon–carbon bond length. Ethylene adsorbes on the platinum (111) surface and with electron beam exposure forms an ordered (2×2) surface structure that is identical to the stable acetylene structure as shown by the intensity profiles.

Bibliography

Stair, P. C., & Somorjai, G. A. (1977). The adsorption of hydrocarbons on platinum studied by low-energy electron diffraction intensities. The ordered (2Ã2) overlayers of acetylene and ethylene on the (111) crystal face of platinum. The Journal of Chemical Physics, 66(5), 2036â2044.

Authors 2

P. C. Stair (first)
G. A. Somorjai (additional)

References 19 Referenced 67

{'key': '2024020915034129000_r1', 'first-page': '1', 'volume': '1', 'year': '1975', 'journal-title': 'Surf. Phys. Mat.'} / Surf. Phys. Mat. (1975)
10.1063/1.1672513 / J. Chem. Phys. (1969)
10.1016/0039-6028(73)90281-1 / Surf. Sci. (1973)
10.1016/0039-6028(74)90056-9 / Surf. Sci. (1974)
10.1063/1.431401 / J. Chem. Phys. (1975)
10.1016/0039-6028(76)90249-1 / Surf. Sci. (1976)
10.1103/PhysRevB.11.623 / Phys. Rev. B (1975)
10.1103/PhysRevLett.36.1316 / Phys. Rev. Lett. (1976)
{'key': '2024020915034129000_r7'}
10.1016/0009-2614(76)80837-8 / Chem. Phys. Lett. (1976)
10.1063/1.1672870 / J. Chem. Phys. (1970)
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{'key': '2024020915034129000_r11'}
{'key': '2024020915034129000_r12'}
10.1147/rd.144.0444 / IBM J. Res. Dev. (1970)
{'key': '2024020915034129000_r14'}
{'key': '2024020915034129000_r15'}
{'key': '2024020915034129000_r16', 'first-page': '630', 'volume': '11', 'year': '1975', 'journal-title': 'Phys. Rev. B'} / Phys. Rev. B (1975)
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Dates

Type	When
Created	22 years, 5 months ago (Feb. 27, 2003, 5:23 p.m.)
Deposited	1 year, 6 months ago (Feb. 9, 2024, 10:55 a.m.)
Indexed	1 year, 6 months ago (Feb. 11, 2024, 7:59 a.m.)
Issued	48 years, 5 months ago (March 1, 1977)
Published	48 years, 5 months ago (March 1, 1977)
Published Print	48 years, 5 months ago (March 1, 1977)

Funders 0

None

BibTeX

@article{Stair_1977, title={The adsorption of hydrocarbons on platinum studied by low-energy electron diffraction intensities. The ordered (2×2) overlayers of acetylene and ethylene on the (111) crystal face of platinum}, volume={66}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.434162}, DOI={10.1063/1.434162}, number={5}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Stair, P. C. and Somorjai, G. A.}, year={1977}, month=mar, pages={2036–2044} }

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