English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

The role of structural changes in the excitation of chemical waves in the system Rh(110)/NO+H2

MPS-Authors
/persons/resource/persons261908

Mertens,  F.
Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22099

Schwegmann,  Stefan
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

1.473133.pdf
(Publisher version), 403KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Mertens, F., Schwegmann, S., & Imbihl, R. (1997). The role of structural changes in the excitation of chemical waves in the system Rh(110)/NO+H2. The Journal of Chemical Physics, 106(10), 4319-4326. doi:10.1063/1.473133.


Cite as: https://hdl.handle.net/21.11116/0000-0008-B460-0
Abstract
Previous investigations have demonstrated that the formation of chemical waves in the NO+H2 reaction on Rh(110) involves a cyclic transformation of the surface structure via various N,O-induced reconstructions, i.e., starting form the c(2×6)-O a cycle is initiated comprising the formation of a (2×3)/(3×1)-N and a mixed c(2×4)-2O,N structure. The stability and reactivity of these structures has been investigated in titration experiments as well as under stationary reaction conditions employing LEED, work function, rate measurements, and thermal desorption spectroscopy. It was shown that the c(2×6)-O and c(2×4)-2O,N structures exhibit a low reactivity whereas the (2×1)/(2×1)-N displays only a small to moderate decrease in catalytic activity (≈20%–30%) compared to the clean surface. On the basis of these results, an excitation mechanism for pulses in the NO+H2 reaction on Rh(110) was constructed consisting of the sequence c(2×6)-O, (2×1)/(3×1)-N c(2×4)-2O,N, c(2×6)-O.