This work aims to identify a suitable electrolyte composition for the operation of zinc–nickel flow cell at ambient temperature. The effect varying containing KOH, ZnO, tetraethylammonium hydroxide (TEAH) or tetrabutylammonium bromide (TEAB) additives are investigated. A 15 mM concentration TEAH is found provide smooth and compact zinc depositions. Increasing concentrations KOH be detrimental v...

A novel approach for classification and dating of the black gel pen ink entries on document was developed based on ion-pairing high-performance liquid chromatography (IP-HPLC). Ninety-three black gel pens were collected and divided into two groups, dye-based and pigment-based, by preliminary solubility test. The chromatographic conditions for separation of the dye-based black gel pen inks were ...

Molecular simulations have allowed us to probe the atomic details of aqueous solutions of tetramethylammonium (TMA) and tetrabutylammonium (TBA) bromide, across a wide range of concentrations (0.5 to 3-4 molal). We highlight the space-filling (TMA(+)) versus penetrable (TBA(+)) nature of these polyatomic cations and its consequence for ion hydration, ion dynamics and ion-ion interactions. A wel...

The formation of gas hydrates is a major issue during the operation oil and pipelines, because cause plugging, thereby disrupting normal flows. A solution to inject hydrate inhibitors such as ionic liquids. Contrary classical inhibitors, liquids act both thermodynamic anti-agglomerates. Imidazolium-based have been found efficient for inhibition CO2 CH4 hydrates. For hydrates, N-ethyl-N-methylmo...

The development of a cost-effective heterogeneous catalytic system for the cycloaddition reaction CO2 and epoxides is great importance. In this manuscript, three kinds boron phosphorus co-doping graphitic carbon nitride (BP-CN) were prepared characterized. Among them, BP-CN-1 displayed optimal performance in presence Bu4NBr (tetrabutylammonium bromide) with propylene oxide, 95% carbonate yield ...

The separation of benzene and cyclohexane azeotrope is one the most challenging processes in petrochemical industry. In this paper, deep eutectic solvents (DES) were used as for cyclohexane. DES1 (1:2 mix tetrabutylammonium bromide (TBAB) levulinic acid (LA)), DES2 TBAB ethylene glycol (EG)) DES3 ChCl (choline chloride) LA) entrainers, vapor-liquid equilibrium (VLE) measurements at atmospheric ...

This work tackles the methodological challenge of rationalizing symmetric-cell cycling data from a materials-science perspective, through experiment replication, mathematical modelling, and tomographic imaging. Specifically, we address Zn electrode in alkaline electrolyte with without adding tetrabutylammonium bromide (TBAB). additive is known literature, but its practical impact jeopardized by...