Adsorption of Oxygen and Nitrogen on Aluminium Films

Mayer, Otto; Fromm, E.

doi:10.1515/ijmr-1977-680106

International Journal of Materials Research

1977

DOI: 10.1515/ijmr-1977-680106

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Adsorption of Oxygen and Nitrogen on Aluminium Films

Otto Mayer¹,

E. Fromm²

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2009

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“…N 2 is known to physisorb on bulk aluminum surfaces at low temperatures. 14 The large activation energy for N 2 adsorption on Al 100 + and the fact that the N 2 remains adsorbed despite the relatively high cluster temperature are both consistent with the idea that the N 2 molecule is chemisorbed on the Al 100 + cluster.…”

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confidence: 59%

Melting Dramatically Enhances the Reactivity of Aluminum Nanoclusters

et al. 2009

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The kinetic energy threshold for chemisorption of N(2) on Al(100)(+) has been measured as a function of the nanocluster's temperature from 440 to 790 K. When the Al(100)(+) cluster melts at 620-660 K, the threshold drops by approximately 1 eV (approximately 96 kJ/mol). A decrease in the activation energy of this magnitude causes a 10(8)-fold increase in the reaction rate at the melting temperature. The decrease in the activation energy may result from the mobility of the surface atoms on the liquid cluster, which allows them to move to a lower energy arrangement as the N(2) approaches.

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supporting

confidence: 59%

Melting Dramatically Enhances the Reactivity of Aluminum Nanoclusters

et al. 2009

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Adsorption of Oxygen and Nitrogen on Aluminium Films

Cited by 1 publication

References 0 publications

Melting Dramatically Enhances the Reactivity of Aluminum Nanoclusters

Melting Dramatically Enhances the Reactivity of Aluminum Nanoclusters

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