Isotherm for Ni-O2 Adsorption System 


Vol. 11,  No. 3, pp. 231-235, Mar.  1990


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  Abstract

The activation energy of dissociative adsorption of oxygen on polycrystalline nickel surface is calculated from adsorption isotherms obtained using X-ray photoelectron spectroscopy. Negative value of this activation energy ( - 5.9 kJ/mol) indicates that the adsorption takes place through an undissociated precursor state. An adsorption energy for this precursor state is calculated assuming the precursor state as a moleculary physisorbed state (Ead = - 7.9 kJ/mol). Finally, an adsorption isotherm equation is derived as a function of the gas exposure, which agrees with the experimental isotherms reasonably good.

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  Cite this article

[IEEE Style]

K. Ham and W. Ahn, "Isotherm for Ni-O2 Adsorption System," Bulletin of the Korean Chemical Society, vol. 11, no. 3, pp. 231-235, 1990. DOI: .

[ACM Style]

Kyoung-Hee Ham and Woon-Sun Ahn. 1990. Isotherm for Ni-O2 Adsorption System. Bulletin of the Korean Chemical Society, 11, 3, (1990), 231-235. DOI: .

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949