Standard Gibbs energies of transfer of univalent ions from water to 1,2-dichloroethane

Sabela, Alfréd; Mareček, Vladimı́r; Samec, Zdeněk; Fuoco, Roger

doi:10.1016/0013-4686(92)85008-9

Cited by 153 publications

(143 citation statements)

References 14 publications

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“…The automatic ohmic drop compensation was adjusted to 99% of the actual ohmic resistance, which was determined by impedance measurements as the real component of the complex impedance at high frequency. Conversion of the voltage applied to the cell to the interfacial potential difference D [10]. Experiments were performed with either the air-saturated solutions, or the solutions deaerated by argon purging.…”

Section: Methodsmentioning

confidence: 99%

Electrochemical evidence of catalysis of oxygen reduction at the polarized liquid–liquid interface by tetraphenylporphyrin monoacid and diacid

Trojánek

Langmaier

et al. 2009

Electrochemistry Communications

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a b s t r a c tCyclic voltammetry is used to study the role of 5,10,15,20-tetraphenyl-21H,23H-porphine (H 2 TPP) in the reduction of molecular oxygen by decamethylferrocene (DMFc) at the polarized water|1,2-dichloroethane (DCE) interface. It is shown that this rather slow reaction proceeds remarkably faster in the presence of tetraphenylporphyrin monoacid (H 3 TPP + ) and diacid (H 4 TPP 2+ ), which are formed in DCE by the successive transfer of two protons from the acidified aqueous phase. A mechanism is proposed, which includes the formation of adduct between H 3 TPP + or H 4 TPP 2+ and O 2 that is followed by electron transfer from DMFc to the adduct leading to the observed production of DMFc + and to the regeneration of H 2 TPP or H 3 TPP + , respectively.

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Section: Methodsmentioning

confidence: 99%

Electrochemical evidence of catalysis of oxygen reduction at the polarized liquid–liquid interface by tetraphenylporphyrin monoacid and diacid

Trojánek

Langmaier

et al. 2009

Electrochemistry Communications

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“…27,28 The hydrophilicity of H þ , Li þ , and Na þ are comparable and K þ is less hydrophilic in the DCE-W two-phase systems, as described above. 29 We might expect a greater interference from K þ ; however, the trends in Figs. 4a and 4b was opposite.…”

mentioning

confidence: 90%

A New Salt Bridge Based on the Hydrophobic Room-Temperature Molten Salt

Kakiuchi¹,

Yoshimatsu²

2006

Bulletin of the Chemical Society of Japan

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A conceptually new salt bridge based on a hydrophobic room-temperature molten salt (ionic liquid) has been demonstrated to be a promising alternative to traditional salt bridges based on a concentrated aqueous KCl phase. 1-Methyl-3-octylimidazolium bis(trifluoromethylsulfonyl)imide (C 8 mimC 1 C 1 N), which is immiscible with water and forms a liquid-liquid two-phase system, exhibits a stable phase-boundary potential when sandwiched by two aqueous electrolyte solutions. The phase-boundary potential between the interface is determined by the partition of C 8 mim þ and C 1 C 1 N À ions in the aqueous phase (W) and is little affected by the type of electrolytes and their concentrations in W, provided that ions dissolved in W are hydrophilic enough. The gelation of the molten salt phase does not affect the phase-boundary potential. The new salt bridge is free from most of the problems inherent to KCl-based salt bridges.

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“…Figure 3 illustrates the influence of the Galvani potential difference on this two-phase reaction when employing different common ions. The Galvani potential difference at the water j DCE interface is set at > 0.59, 0.160, 0.019, À0.225, and < À0.53 V by the ions TPFB À , TMA + , TEA + , TBA + , and BTPPA + , [11] respectively, as shown in Figure 1. It is clear from the color change in Figure 3, as well as the UV/Vis spectra ( Figure S2.1 in the Supporting Information), that the reaction rate follows the order TPFB À > TMA + > TEA + > TBA + > BTPPA + .…”

mentioning

confidence: 99%

H₂O₂ Generation by Decamethylferrocene at a Liquid|Liquid Interface

Nia

et al. 2008

Angew Chem Int Ed

123

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Standard Gibbs energies of transfer of univalent ions from water to 1,2-dichloroethane

Cited by 153 publications

References 14 publications

Electrochemical evidence of catalysis of oxygen reduction at the polarized liquid–liquid interface by tetraphenylporphyrin monoacid and diacid

Electrochemical evidence of catalysis of oxygen reduction at the polarized liquid–liquid interface by tetraphenylporphyrin monoacid and diacid

A New Salt Bridge Based on the Hydrophobic Room-Temperature Molten Salt

H₂O₂ Generation by Decamethylferrocene at a Liquid|Liquid Interface

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Standard Gibbs energies of transfer of univalent ions from water to 1,2-dichloroethane

Cited by 153 publications

References 14 publications

Electrochemical evidence of catalysis of oxygen reduction at the polarized liquid–liquid interface by tetraphenylporphyrin monoacid and diacid

Electrochemical evidence of catalysis of oxygen reduction at the polarized liquid–liquid interface by tetraphenylporphyrin monoacid and diacid

A New Salt Bridge Based on the Hydrophobic Room-Temperature Molten Salt

H2O2 Generation by Decamethylferrocene at a Liquid|Liquid Interface

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H₂O₂ Generation by Decamethylferrocene at a Liquid|Liquid Interface