5-aminosalicylic acid (5-asa) is currently prepared by electrochemical reduction of 5-nitrosalicylic acid (5-nsa) in acidic media. in this work, electrolytic reduction of 5-nsa in alkaline media is presented. reactionconditions and parameters such as anode and cathode electrodes, electrolyte type, reaction time, temperature,current, and the ph for isolation of product are investigated. the yiel...

Electrochemical techniques have been frequently used in the field of chemical analyses including pretreatment, qualitative estimation and quantification. Principal physical quantities obtained by electrochemical measurements are potential (or voltage), current and resistance. Each quantity provides the indication of a driving force, a rate and a barrier against electrochemical reactions. Figure...

Since their discovery, ionic liquids (ILs) have attracted a wide interest for their potential use as a medium for many chemical processes, in particular electrochemistry. As electrochemical media they allow the electrodeposition of elements that are impossible to reduce in aqueous media. We have investigated the electrodeposition of aluminium from 1-butyl-3-methyl-imidazolium chloride ((Bmim)Cl...

The electrochemical oxidation of mixture pesticides imazilil and pyrimethanil pesticides has been studied on borondoped diamond (BDD) electrodes on acid medium by bulk electrolysis. The influences of current density, conductive electrolyte, pH, and concentration of pesticide were investigated. GC and chemical oxygen demand measurements were conducted to study the reaction kinetics of pesticides...

in this paper, the electrochemical behaviour of passive films formed on aisi 321 stainless steel (aisi 321)immersed in 0.1 m naoh + 0.1 m koh solution was evaluated by different electrochemical techniques. forthis purpose, passive films were formed at open circuit potential for 1 to 12 hours and then electrochemicalmeasurements were done. the polarization curves suggested that aisi 321 showed e...

The electrochemical corrosion behavior of NiTi alloy electrodeposited conductive polypyrrole (PPy) coatings doped with small size sulfate (SO42 ), medium size para-toluene sulfonate (pTS ) and large size dodecylbenzene sulfonate (DBS ) counter anions has been studied by electrochemical measurements and surface analysis. It is demonstrated that PPy coatings inhibit the corrosion of NiTi substrat...

In this research, the nanoorganic reagent 4 (4-sulphophenylazo) pyrogallol was prepared by method of forming diazonium salt in an acidic medium coupling compound sulfadiazine with pyrogallol. The complex iron (III) also prepared. and were diagnosed through electronic spectrometers, UV-Visible Spectrophotometers, IR, X-ray diffraction measurements, XRD, 1H-NMR-C13-NMR measurements. effect solven...

One of the problems in the case of stainless steels is their low corrosion resistance against pitting corrosion in chloride containing environments, thereby leading to severe damage to industries. In this research, the pitting corrosion of 304 austenitic stainless steel was studied in 3.5% NaCl solution at room temperature (25˚C) by performing electrochemical measurements (containing cyclic pol...

This paper considers the effect of mutual activation poly(methacrylic acid) (PMAA) and poly-(4 vinylpyridine) (P4VP) hydrogels during their remote interaction on degree yttrium ions sorption from an aqueous medium. Electrochemical properties were studied by conductometry pH measurements to predict possibility these hydrogels. showed that at 0.1 hour, values lowest, indicating a high content H+ ...