Abstract: The conventional mechanism of oscillatory phenomena in the NO + H2 reaction on noble metals is supplemented with the temporal reaction route, providing fast removal of atomic nitrogen from saturated Nad layer via NHad species as a catalyst. The total sum of lost valences at a given adsorption site is taken as a degree of local surface imperfection. A semi-empirical evaluation of this approach regards an enormous advantage of Nad atoms at a grain boundary against perfect terraces in the activity of NHad formation as a driving force of both spatiotemporal and rate oscillations. Besides, NHad species are expected to obey an “easy-come-easy-go” principle enabling their ready formation as well as high diffusivity and reactivity. Mathematical modelling at fixed realistic step constants reveals three kinetic region-attractors related to a steady state, regular oscillations, and total reaction suppression by adsorbed oxygen atoms.

Cite: Cholach A.R. , Bulgakov N.N.
The Double-Route Model of Oscillatory Phenomena in the NO + H2 Reaction on Noble Metal Surfaces
Catalysis Letters. 2013. V.143. N8. P.817-828. DOI: 10.1007/s10562-013-1037-z WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Sep 19, 2012
Accepted:	May 29, 2013
Published online:	Jun 13, 2013
Published print:	Aug 1, 2013

Identifiers:

Web of science:	WOS:000321873200010
Scopus:	2-s2.0-84880277343
Elibrary:	20443658
Chemical Abstracts:	2013:937039
Chemical Abstracts (print):	159:155528
OpenAlex:	W1995272382

Citing:

DB	Citing
Web of science	3
Scopus	5
Elibrary	4
OpenAlex	4

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