Analysis of the dependence on temperature of the frequency of oscillation of the Belousov–Zhabotinskii reaction

Blandamer, Michael J.; Roberts, David L.

doi:10.1039/f19777301056

Cited by 26 publications

(20 citation statements)

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“…The BZ reaction stays much longer time in the reduced state of the ruthenium than in the oxidized state, and the switch between two states is relatively fast. Therefore, the consumption of the bromide ion is the frequency determining step, which is given by the following equation 37, 38 …”

Section: Resultsmentioning

confidence: 99%

A comparative study of temperature dependence of induction time and oscillatory frequency in polymer‐immobilized and free catalyst Belousov‐Zhabotinsky reactions

Pullela¹,

Shen²,

Márquez³

et al. 2009

J Polym Sci B Polym Phys

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Environment-sensitive poly(N-isopropylacrylamide) (PNIPAM) microgel particles with covalently bonded ruthenium(4-vinyl-4 0 -methyl-2,2 0 -bipyridine) bis (2,2 0 -bipyridine) [Ru(vmbipy)(bipy) 2 ] display periodic size changes when placed in Belousov-Zhabotinsky (BZ) reaction substrates. The temperature dependency of the induction time and oscillatory frequency of the BZ reaction in this polymer-immobilized catalyst system were compared to the bulk BZ reaction with the catalyst in the solution phase. Prolonged induction times are observed for the immobilized catalyst, compared with free catalyst, while little difference is observed on the oscillation frequency. The Arrhenius frequency factor calculated using the induction time for the immobilized catalyst BZ reaction is about seven times smaller than that for the free catalyst Ru(bipy) 2þ 3 case. On the other hand, the Arrhenius frequency factors calculated using the oscillatory frequency are almost the same, showing similar reaction kinetics during the BZ oscillations. The tunability of the induction time using a polymer matrix, as we observed here, while maintaining similar oscillatory behavior, should provide a new dimension to control the self-assembling of BZ active particles.

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Section: Resultsmentioning

confidence: 99%

A comparative study of temperature dependence of induction time and oscillatory frequency in polymer‐immobilized and free catalyst Belousov‐Zhabotinsky reactions

Pullela¹,

Shen²,

Márquez³

et al. 2009

J Polym Sci B Polym Phys

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“…For both types of oscillation log (Vperiod) is a linear function of reciprocal temperature. The gradients of similar plots have been associated with apparent activation energies [7]. In this case values of 56 and 102 kJ/mol for high-and low-frequency oscillations, respectively, have been obtained.…”

Section: Variation In Temperaturementioning

confidence: 97%

A dual‐frequency Belousov Zhabotinskii oscillating reaction with ethyl acetoacetate as organic substrate

Salter¹,

Sheppard²

1982

Int J of Chemical Kinetics

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The experimental behavior of the cerium-and manganese-catalyzed Belousov Zhabotinskii oscillating reaction with ethyl acetoacetate as organic substrate has been investigated. Under certain conditions the system displays two types of temporal oscillations. Damped highfrequency oscillations appear immediately after the addition of potassium bromate solution to complete the reaction mixture. These high-frequency oscillations may be regarded as being superimposed on an induction period of the type found in the reaction using malonic acid.After the induction period, low-frequency oscillations of the normal type are obtained. Both the high-frequency and the low-frequency oscillations can be monitored with a platinum redox or with a bromide specific ion electrode.

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“…Temperature dependence for a variety of catalyzed and uncatalyzed bromate driven oscillators have been characterized [23][24][25][26][27][28].…”

Section: (4)mentioning

confidence: 99%

Oscillatory behaviour of resorcinol with manganese salts in different aqueous acid media

Peerzada

Ganaie

2010

2010 2nd International Conference on Chemical, Biological and Environmental Engineering

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Studies on the oscillatory behavior of resorcinol with different catalysts, different co-ions for the same catalyst (acetate, carbonate, sulphate) and different media give different trends. The use of different catalysts shows that Mn(II) is most reactive and Ferroin is least reactive with respect to resorcinol with respect to different oscillatory parameters like time period and induction period. The use of different acidic media clearly shows the ease with which protonated species is formed in sulfuric acid and hence maximum number of oscillations is seen in this medium as compared to orthophosphoric acid where no oscillations are seen. Study on the different co-ions is carried out for the first time and it is observed that co-ions also have a good impact on nature of oscillations. Such ions can be treated as co-substrates although oscillations are not observed while using such compound separately with the bromate (i.e. in absence of resorcinol).

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Analysis of the dependence on temperature of the frequency of oscillation of the Belousov–Zhabotinskii reaction

Cited by 26 publications

References 0 publications

A comparative study of temperature dependence of induction time and oscillatory frequency in polymer‐immobilized and free catalyst Belousov‐Zhabotinsky reactions

A comparative study of temperature dependence of induction time and oscillatory frequency in polymer‐immobilized and free catalyst Belousov‐Zhabotinsky reactions

A dual‐frequency Belousov Zhabotinskii oscillating reaction with ethyl acetoacetate as organic substrate

Oscillatory behaviour of resorcinol with manganese salts in different aqueous acid media

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