Belousov−Zhabotinsky Oscillations in Bromate−Oxalic Acid−MnSO4−H2SO4−Acetone System in Nonionic Surfactant Medium. A Calorimetric Study

Biswas, Shelly; Mukherjee, Kushal; Mukherjee, and D. C.; Moulik, Satya P.

doi:10.1021/jp0107154

Cited by 11 publications

(8 citation statements)

References 36 publications

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“…Berenstein, Agreda and Barragán 10 studied the effect of the addition of methyl-ketones on the induction period. In addition to the Ševčík and Adamčíková's work, 5 the system with acetone and catalyzed by manganese was studied by Weigt, 11 Biswas et al 12 and Guedes and Faria, 13 also under batch conditions. In Guedes and Faria's work, 13 two characteristically different patterns of oscillations, depending on the method of mixing of the reagents and controlled by the acetone concentration, were determined.…”

Section: Introductionmentioning

confidence: 99%

Oscillatory bromate-oxalic acid-Ce-acetone-sulfuric acid reaction, in CSTR

Pereira

Faria

2004

J. Braz. Chem. Soc.

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São relatadas, pela primeira vez, a observação de oscilações periódicas, em reator agitado de fluxo contínuo (CSTR), para o sistema bromato-ácido oxálico-Ce(IV)-acetona-ácido sulfúrico. Identificou-se que a reação entre Ce(IV) e a acetona, até então não descrita na literatura e que ocorre antes dos reagentes serem adicionados ao reator, é um fator decisivo para o aparecimento de oscilações regulares.Periodic oscillations were observed for the first time, in a CSTR, in the system bromate-oxalic acid-Ce(IV)-acetone-sulfuric acid, in a CSTR. A reaction between Ce(IV) and acetone, until now not described in the literature and occurring before the addition of the reagents to the reactor, was identified as a decisive factor for the appearing of the regular oscillations.

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Section: Introductionmentioning

confidence: 99%

Oscillatory bromate-oxalic acid-Ce-acetone-sulfuric acid reaction, in CSTR

Pereira

Faria

2004

J. Braz. Chem. Soc.

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“…138 A range of dissolved surfactants inhibit the frequency and enthalpy of thermal oscillations of the oxalic acid/bromate/MnSO 4 /H 2 SO 4 /acetone system. 139 The system BrO 3 Ϫ / SO 3 2Ϫ /HCO 3 Ϫ /H ϩ shows oscillations in [H ϩ ], exhibiting both bi-and tristability among steady states (neutral and acidic) as well as the oscillating state. 140 Numerical simulation behaviour for the Bray-Liebhafsky oscillating reaction in a batch reactor in terms of the production of O 2 , matches the experimental data.…”

Section: Oscillating Reactions and Chemical Chaosmentioning

confidence: 99%

27 Mechanisms of reactions in solution

Davies¹

2002

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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“…From the oscillatory reaction, only the Belousov–Zhabotinsky (BZ) oscillatory reaction was studied in the micellar solution. Recent studies of catalyzed and uncatalyzed BZ reaction proved the micellar effects on the induction period (IP), the oscillation period (OP), and the amplitudes and also on the initiation or extinction of oscillations.…”

Section: Introductionmentioning

confidence: 99%

A Potentiometric Study of the Briggs–Rauscher Oscillatory Reaction in a Solution of Nonionic Surfactants and tert‐Butanol

Pribus

Trnková

Grančičová

et al. 2018

Int J of Chemical Kinetics

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The concentration effect of nonionic surfactants (Triton X‐100, Brij 30, Brij 58, Tween 20, and Tween 80) and tert‐butanol was investigated on the Briggs–Rauscher oscillatory reaction in a stirred batch reactor at 25 ± 0.1°C in both the absence and presence of nonionic surfactant and tert‐butanol as well. The addition of Triton X‐100, Brij 58, and Tween 20 influenced the oscillatory parameters in a similar fashion: a decrease of the induction period until its disappearance, an increase of the oscillation period, an increase of the oscillation amplitude, an increase of the duration of the oscillation, and a gradual increase of the oscillation numbers. The addition of Brij 30 has no significant effect on the oscillation parameters of the Briggs‐Rauscher oscillatory reaction. The effect of tert‐butanol on the Briggs–Rauscher oscillatory reaction is very similar to the effect of Brij 58; however, we were unable to observe the disappearance of the induction period on the studied concentration range. The addition of Tween 80 to the reaction mixture has a similar effect as the addition of Triton X‐100, Brij 58, or Tween 20, except for the induction period, which in the case of Tween 80, it becomes larger. The observed effects are explained in terms of micellar catalysis or inhibition, that is, in a different extent of individual reactants of solubilization.

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Belousov−Zhabotinsky Oscillations in Bromate−Oxalic Acid−MnSO₄−H₂SO₄−Acetone System in Nonionic Surfactant Medium. A Calorimetric Study

Cited by 11 publications

References 36 publications

Oscillatory bromate-oxalic acid-Ce-acetone-sulfuric acid reaction, in CSTR

Oscillatory bromate-oxalic acid-Ce-acetone-sulfuric acid reaction, in CSTR

27 Mechanisms of reactions in solution

A Potentiometric Study of the Briggs–Rauscher Oscillatory Reaction in a Solution of Nonionic Surfactants and tert‐Butanol

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