Effect of Different Counterions of the Manganese Salt as Catalyst on the Kinetics of Resorcinol‐Based Belousov–Zhabotinsky Reaction

Abstract

Kinetic studies on the Belousov–Zhabotinsky (BZ) system with various metal ions as catalysts have been carried out for a long time, but the effect of counteranions associated with the metal ion solution used as the catalyst in the BZ reaction has not been explored. Thus, we have chosen some metal salts as catalysts having the metal ion (Mnn+) but with various anions to study the role of different anionic moieties of catalyst on the oscillatory behavior of the resorcinol‐based BZ reaction system. It is found that organic‐type anionic moieties marginalize the role of organic substrates in the reaction system. On the other hand, the inorganic counterions of the catalyst show salting out effects, thereby increasing the ionic strength, which affects the mobility (diffusion) of the ions in our system performed under batch conditions.

Dynamical regime of resorcinol based Belousov–Zhabotinsky chemical oscillator in the presence or absence of some hydrophobic antioxidants in aqueous–organic mixed media

“…Oxidation peak increases due to formation of Mn 3+ species, which have feeble interactions with the resorcinol and the organic solvent as compared to Mn 2+ ion. 48…”

“…During this study, we have worked on several organic-aqueous mixed media to evaluate the best one that can be used for deterministic studies in future. Here, four hydrophobic biologically important antioxidants have been used as perturbants, solubilized by these non aqueous mixed media under unstirred batch conditions, as was the case with resorcinol as substrate in our previous works [46][47][48] and this has opened a new chapter to carry out the investigations with similar other hydrophobic species in future. The resorcinol has been chosen owing to its sufficient solubility in aqueous acid medium and dynamic behavior over a wide range of concentrations.…”

Hofmeister Effect in Self-Organized Chemical Systems

“…Despite some examples of the influence of spectator ions (or counter-ions) on BZ-type reactions being reported in the literature, − there were not any serious attempts to rationalize such effects in terms of the Hofmeister series. Here, we chose a cation series such that possible specific effects can be directly related to the classic Hofmeister ordering because the elements considered are strongly connoted for their kosmotropic (Li and Na) and chaotropic (K, Cs) nature.…”

Manipulating the Polymerization of 3,5-Diaminobenzoic Acid with a Bromate Oscillator

“…To shed light on such an interesting issue, this paper investigated the polymerization of 3,5-dABA at an oscillatory concentration established through bromate-based chemical oscillators. Many aromatic compounds, including aniline-based compounds, have been shown to exhibit oscillatory behavior when reacting with acidic bromate. − As such, these reactions can be potentially used to fabricate polymer-coated electrodes under dynamic conditions. Notably, oscillations in the bromate-based oscillators may occur in complex modes such as period doubling, torus oscillation, and chaos, creating tremendous potential of making more interesting polymers for different applications. − …”