Response dynamics to pulsed perturbations of the hydrogen peroxide-thiosulfate-Cu2+ reaction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F08%3A00020785" target="_blank" >RIV/60461373:22340/08:00020785 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Response dynamics to pulsed perturbations of the hydrogen peroxide-thiosulfate-Cu2+ reaction
Original language description
The hydrogen peroxide-thiosulfate-Cu2+ reaction operated in a continuous flow stirred tank reactor is a pH-oscillator known to provide three different steady states, hysteresis, and oscillations. In addition to the various dynamical regimes established earlier, a question arises whether the reaction can be also excitable, whereby the system strongly responds to a small but supercritical external addition of certain chemical species. We carried out experiments aimed at finding excitability and studying response dynamics to single and repeated pulsed perturbations of varying amplitude and period. We found that the reaction displays a remarkable excitatory dynamics when forced. The available mechanism of the reaction involves several adjustable parameters, which need to be tuned so that the model corresponds to experimentally observed bifurcation diagrams. Our experimental findings are compared with numerical calculations, suggesting that the model is far from complete.
Czech name
Odezvová dynamika na pulsní perturbace v reakci peroxid vodíku-thiosíran-Cu2+
Czech description
Reakce peroxid vodíku-thiosíran-Cu2+ provozovaná v průtočném míchaném reaktoru je pH-oscilátor, jehož dynamika vykazuje násobné stacionární stavy, hysterezi a oscilace. Navíc vykazuje excitabilitu, která byla předmětem studia v této práci. Byly nalezenyrůznorodé režimy dynamiky při periodické perturbaci systém v excitabilním režimu. Dostupný mechanismus obsahuje nastavitelné parametry, které bylo třeba vyladit tak, aby model co nejlépe odpovídal experimentům. Byla zjištěna značná neshoda indikující, žeuvedený model je velmi neúplný.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/GA203%2F06%2F1269" target="_blank" >GA203/06/1269: Stability and dynamics of reaction networks in homogeneous and heterogeneous chemical reactors</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physical Chemistry A
ISSN
1089-5639
e-ISSN
—
Volume of the periodical
112
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
—
UT code for WoS article
000252815100009
EID of the result in the Scopus database
—