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Acetylene adsorption on a clean iridium surface

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Abstract

The interaction of C2H2 with a polycrystalline iridium surface at 140 K≤T≤500 K has been studied by AES, XPS and UPS. A model of the bonding between C2H2 and Ir by the 1π orbitals of the hydrocarbon is proposed. The more pronounced energy splitting between the δ orbitals of acetylene during adsorption compared to that in the gas phase is ascribed to deformation of the acetylene molecule.

Abstract

Взаимодействие C2H2 с поликриста. ической поверхностью ирридия при 140 K≦T≦500 K исследовано путем AES, XPS и UPS. Предложена модель связи C2H2 с Ir за счет 1π-орбиталей углеводорода. Более явно выраженное расщепление энергии между δ-орбитчлями ацетилена во время адсорбции, по сравнению с газофазным, приписывается деформации молекулы водорода.

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Authors and Affiliations

  1. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1040, Sofia, Bulgaria

    Ts. S. Marinova & K. L. Kostov

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  1. Ts. S. Marinova
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  2. K. L. Kostov
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Marinova, T.S., Kostov, K.L. Acetylene adsorption on a clean iridium surface. React Kinet Catal Lett 30, 245–252 (1986). https://doi.org/10.1007/BF02064299

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  • DOI: https://doi.org/10.1007/BF02064299

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