English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

Coupled chemical oscillators in catalytic oxidation of CO on Pd(110) surfaces

MPS-Authors
/persons/resource/persons247833

Ehsasi,  Mohammad
Fritz Haber Institute, Max Planck Society;

/persons/resource/persons247835

Frank,  Otto
Fritz Haber Institute, Max Planck Society;

/persons/resource/persons195362

Block,  Jochen H.
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)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Ehsasi, M., Frank, O., Block, J. H., & Christmann, K. (1990). Coupled chemical oscillators in catalytic oxidation of CO on Pd(110) surfaces. Chemical Physics Letters, 165(2-3), 115-119. doi:10.1016/0009-2614(90)85414-8.


Cite as: https://hdl.handle.net/21.11116/0000-0006-8109-E
Abstract
Gas phase coupling between two separate (110)-oriented palladium single crystals is reported during reaction rate oscillations of CO oxidation. The oscillations were monitored by simultaneous measurement of work function changes on each crystal and of the combined CO2 production rates. With the onset of the oscillations, synchronization between the two samples occurred rapidly via the gas phase. Under strong coupling conditions and identical sample temperatures, both surfaces exhibited identical amplitudes and frequencies. Variation of the coupling intensity led to phase locking, entrainment, bead formation, composed oscillations and enhancement. The communication between the two crystals occurs entirely via the CO pressure. The coupled crystals system can serve as a model for the study of the dynamics of coupling in heterogeneous reactions as well as in oscillating reactions generally.