Showing papers on "Supporting electrolyte published in 1971"
TL;DR: In this paper, the effect of ionic migration on free convection and free convective limiting currents is investigated, and the presence of supporting electrolyte lowers the electric field, as in stagnant or forced convective systems.
Abstract: Free convection and ionic migration effects are reviewed. Electrolytic free convection is treated theoretically for solutions and for solutions without added electrolyte and with additions of or . The effect of ionic migration on limiting currents is investigated. The presence of supporting electrolyte lowers the electric field, as in stagnant or forced convective systems. In addition, the concentration distributions of added electrolytes affect the density distribution, hence, the velocity profile in free convection, and, indirectly, the value of the calculated limiting currents.
88 citations
TL;DR: In this paper, the potential dependence of Cl− and HSO4−-ion adsorption was investigated on platinized Pt electrodes in 1 M HClO4 supporting electrolyte solution by a tracer method.
74 citations
TL;DR: In this paper, a rotating GCE was found to be a suitable electrode for anodic stripping voltammetry of submicro amounts of metal ions, and the peak current and peak potential were obtained corresponding to the anodic dissolution of silver and copper in acidic, neutral and alkaline media.
48 citations
TL;DR: In this article, the half-wave potentials of p -substituted nitrobenzenes and benzaldehydes in dimethylformamide depend on the ionic potential φ of the cations of the electrolyte.
25 citations
Patent•
26 Apr 1971TL;DR: In this article, an electric current was passed through a liquid medium comprising a solution of a monohydric alcohol and as a supporting electrolyte an ammonium or quaternary ammonium salt using an anode and passing the electric current through the medium until the alkoxides are present in the liquid medium.
Abstract: This invention relates to the production of alkoxides by passing an electric current through a liquid medium comprising a solution of a monohydric alcohol and as a supporting electrolyte an ammonium or quaternary ammonium salt using an anode and passing the electric current through the medium until the alkoxides are present in the liquid medium.
15 citations
TL;DR: The kinetics of polycrystalline iron electrodes have been investigated under different experimental conditions, employing solutions of hydrogen chloride in dimethylsulphoxide in the presence of KClO4 as supporting electrolyte.
14 citations
TL;DR: In this article, the height of the a.c.p.m. polarographic wave of titanium (IV) in citrate buffer increases by about 80% on addition of the surfactant dodecylamine to the supporting electrolyte.
13 citations
01 Oct 1971
TL;DR: In this paper, the critical micelle concentrations of four anionic surfactants were determined by DC polarographic desorption waves of the surfactant without supporting electrolyte.
Abstract: Critical micelle concentrations of four anionic surfactants were determined by DC polarographic desorption waves of the surfactants without supporting electrolyte. The linear plot obtained between the potentials of the desorption waves and the logarithmic concentrations of the surfactant had an inflection point which corresponded to the CMC. The CMC values obtained are in good agreement with those in the literature.
12 citations
TL;DR: In this paper, the polarography and the conductance of solutions in acetonitrile of tin(IV) chloride and iodide, tin(II) chloride, and germanium(IV), and zirconium (IV) chlorides have been investigated.
10 citations
TL;DR: In this paper, the theory for sedimentation of macromolecular polyelectrolytes in solutions of low-ionic strength has been modified for the case of a supporting low molecular weight electrolyte possessing a partial specific volume close to unity.
Abstract: The theory for sedimentation of macromolecular polyelectrolytes in solutions of low-ionic strength has been modified for the case of a supporting low molecular weight electrolyte possessing a partial specific volume close to unity. The final equations simplify greatly, allowing sedimentation data to be plotted in a linear fashion. These data then may be readily extrapolated to infinite dilution, yielding a value, So, simply related to size and shape. From the initial slope of such plots, the net charge on the macro-molecular polyelectrolyte may be determined. It is suggested that tetramethyl-ammonium chloride may prove to be a satisfactory supporting electrolyte for such studies.
9 citations
TL;DR: In this article, the rate constants for electrochemically initiated polymerization were determined by employing a pulsing technique, and the Arrhenius parameters were compared to those from previous studies and are interpreted in terms of ion-pair propagation.
Abstract: The rate constants for electrochemically initiated polymerization were determined by employing a pulsing technique. An electrochemical titration was conducted in which polymer chains were initiated electrochemically, propagated in the absence of current, and terminated electrochemically. The concentrations of supporting electrolyte and monomer were chosen to correspond to those employed in electropolymerization syntheses. The temperature range −10°C to −72°C gave kp = 1.45 × 102 exp {2600/RT}. The Arrhenius parameters are compared to those from previous studies and are interpreted in terms of ion-pair propagation. Precise control of molecular weight distributions is implicit from an accurate knowledge of the kinetic parameters and is reported separately.
TL;DR: In this paper, the capacitance minima of o-cresols at the mercury-solution interface from NaF and from NaOH solutions have been studied by electrocapillary and capacitance methods.
Patent•
13 Dec 1971TL;DR: In this article, a method for providing electroluminescent emission in an electrolytic cell by subjecting to an alternating current was proposed, in which the cell containing at least two electrodes in a mixture of a substantially inert solvent, a fluorescent organic polycyclic heterocyclic compound, and a supporting electrolyte.
Abstract: Method for providing electroluminescent emission in an electrolytic cell by subjecting to an alternating current an electrolytic cell containing at least two electrodes in a mixture of (a) a substantially inert solvent, (b) a fluorescent organic polycyclic heterocyclic compound, and a supporting electrolyte.
Patent•
06 Aug 1971TL;DR: In this article, a method of forming a highly heat-resistant polymer film on an object surface by electrolyzing a vinyl monomer and a alpha, alpha '-derivative salt of p-xylylene without use of any supporting electrolyte and with the object taken as one of the electrodes is described.
Abstract: A method of forming a highly heat-resistant polymer film on an object surface by electrolyzing a vinyl monomer and a alpha , alpha '-derivative salt of p-xylylene without use of any supporting electrolyte and with the object taken as one of the electrodes.
Patent•
27 Dec 1971
TL;DR: In this paper, a method of electropolishing utilizing a solution comprising a major amount of phosphoric acid, a minor amount of oxidizing component selected from chromium sesquioxide and a trivalent titanium oxide, and a small amount of current supporting electrolyte.
Abstract: A method of electropolishing utilizing a solution comprising a major amount of phosphoric acid, a minor amount of oxidizing component selected from chromium sesquioxide and a trivalent titanium oxide, and a minor amount of current supporting electrolyte. In particular embodiments, the electrolyte comprises ions of nickel and ions of one or more of iron and copper. The used bath can be reconstituted by the addition of phosphoric acid to adjust its specific gravity and may be purged of contamination by the addition of nickelous carbonate or by cathodic reduction. Use of the bath provides a monomolecular layer of metal oxide on the processed article.
TL;DR: In this paper, the anodic oxidation of 1,2-dimethoxy-4-prop-1-enylbenzene in acetonitrile solution, containing sodium perchlorate as supporting electrolyte, has been re-examined in order to investigate the reaction mechanism and to characterize the oxidation products.
Abstract: The anodic oxidation of 1,2-dimethoxy-4-prop-1-enylbenzene in acetonitrile solution, containing sodium perchlorate as supporting electrolyte, has been re-examined in order to investigate the reaction mechanism and to characterize the oxidation products.
TL;DR: In this article, the polarography of Nickel (II) in the presence of DL-tryptophan has been studied in KNO3 supporting electrolyte and the effect of temperature is described.
Abstract: The polarography of Nickel (II) in the presence of DL-tryptophan has been studied in KNO3 supporting electrolyte. Nickel yields two irreversible steps which are due to the formation of two varieties of complex in sluggish equilibrium with each other. The reduction is an irreversible, kinetically controlled process as evidenced from cyclic voltammetry and i–t curves. Rate constants of the processes are evaluated. The effect of temperature is described.
01 Jan 1971
TL;DR: In this paper, Dicoumarol, 3,3′-methylenebis-(4-hydroxycoumarine) (I), has been investigated in DMF solutions containing 0.5 F (Et4N)ClO4 as supporting electrolyte.
Abstract: Dicoumarol, 3,3′-methylenebis-(4-hydroxycoumarine) (I), is well known as an effective anticoagulant agent. The electrochemical behaviour of (I) and some its derivatives, (3,3′-ethylenebis-(4-hydroxycoumarine) (II),3,3′-propylenebis-(4-hydroxycoumarine) (III), 3,3′-isobutylenebis-(4-hydroxycoumarine) (IV), 3,3′-benzylidenebis-(4-hydroxycoumarine) (V), has been investigated in DMF solutions containing 0.5 F (Et4N)ClO4 as supporting electrolyte. At a D.M.E. a two-step reduction takes place with every compound investigated. The first step is relative to the discharge of solvated H+, the second to the hydrogen in the undissociated species HB−. The acidic strength of various HB− in DMF has been evaluated from spectrophotometric determinations of the constants (relative to the concentrations) of the equilibrium: HB− + S ⇆ HS+ + B2−.