Investigation of the Energetics of the Reactions ofNH2Species with Hydrogen and NO on the Pt(100) Surface by the Method of UBI-QEP

S. Azizian () and H. Iloukhani
Additional contact information
S. Azizian: Department of Chemistry, Faculty of Science, Bu-Ali Sina University, Hamadan, Iran
H. Iloukhani: Department of Chemistry, Faculty of Science, Bu-Ali Sina University, Hamadan, Iran

Surface Review and Letters (SRL), 2003, vol. 10, issue 04, 585-590

Abstract: The formation ofNH2,adsand its further reactions with hydrogen and NO on the Pt(100) surface were previously studied by the methods of HREELS and TPR, in order to understand the role of amino species in the mechanism of theNO+H2reaction. In this work the method of unity bond index – quadratic exponential potential (UBI-QEP) has been employed to rationalize the experimental findings by calculating the energies associated with the envisaged routes of reactions. It is concluded that the activation energy of formation ofNH2,adsis higher than water production. The simplicity of recombinative desorption of N2is due to the decrease of its activation energy because of the destabilizing effect ofOadsandNOads. The rate-determining step of explosive surface reaction in the saturated coadsorption layer ofNH2,adsand NOadsis dissociation ofNOads. Autocatalytic acceleration of the explosive reactions is due to the decrease of activation energy of the rds by increasing the number adsorption vacant sites.H2Ois produced via two different processes with different activation energies.NH3is produced via several paths.

Keywords: UBI-QEP; surface reaction; amino; Pt(100) (search for similar items in EconPapers)
Date: 2003
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X03005347
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:10:y:2003:i:04:n:s0218625x03005347

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X03005347

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().