2‐Pyrilideniminobenzohydroxamic Acid as Analytical Reagent for the Spectrophotometric Determination of Vanadium(V)

Salinas, F.; Jiménez-Arrabal, M.; Durán-Merás, Isabel

doi:10.1002/bscb.19850940205

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…Commonly, one metal ion can chelate two or three hydroxamate molecules to form five-membered ring complexes (according to the valence of the metal sample). Notably, a large proportion of hydroxamic acids has been used as flotation collectors [ 17 , 18 ], analytical reagents [ 19 ], drugs [ 20 ], and chelating resins [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Novel Polystyrene-Poly(hydroxamic Acid) Copolymer and Its Adsorption Properties for Rare Earth Metal Ions

Cao

Wang

et al. 2020

Polymers

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In this study, a novel polystyrene-poly(hydroxamic acid) copolymer was synthesized as an effective adsorbent for the treatment of rare earth elements. Through the use of elemental analysis as well as FTIR, SEM, XPS, and Brunauer-Emmett-Teller (BET) surface area measurement, the synthesized polymer was found to have a specific surface area of 111.4 m2·g−1. The adsorption performances of rare metal ions were investigated under different pH levels, contact times, initial concentrations of rare earth ions, and temperatures. The adsorption equilibrium for La3+, Ce3+, and Y3+ onto a polystyrene-poly(hydroxamic acid) copolymer is described by the Langmuir model, which confirms the applicability of monolayer coverage of rare earth ions onto a polystyrene-poly(hydroxamic acid) copolymer. The amount of adsorption capacities for La3+, Ce3+, and Y3+ reached 1.27, 1.53, and 1.83 mmol·g−1 within four hours, respectively. The adsorption process was controlled by liquid film diffusion, particle diffusion, and chemical reaction simultaneously. The thermodynamic parameters, including the change of Gibbs free energy (∆G), the change of enthalpy (∆H), and the change of entropy (∆S), were determined. The results indicate that the adsorption of resins for La3+, Ce3+ and Y3+ was spontaneous and endothermic. The polymer was also used as a recyclable adsorbent by the desorption experiment.

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Section: Introductionmentioning

confidence: 99%

Preparation of a Novel Polystyrene-Poly(hydroxamic Acid) Copolymer and Its Adsorption Properties for Rare Earth Metal Ions

Cao

Wang

et al. 2020

Polymers

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show abstract

“…Hydroxamic acid can be regarded as a derivative of carboxylic acid and exhibit a strong ability to chelate metal ions. Due to its unique structure, hydroxamic acid can chelate two or three hydroxamate molecules to form five-membered ring complexes, which are widely used as analytical reagents [13], drugs [14], flotation collectors [15,16], and chelating resins [17,18].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Properties for La(III), Ce(III), and Y(III) with Poly(6-acryloylamino-hexyl hydroxamic acid) Resin

et al. 2020

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Using polyacrylic resin followed by the substitution reaction with 6-aminohexyl hydroxamic acid, poly(6-acryloylamino-hexyl hydroxamic acid) resin (PAMHA) was successfully synthesized. PAMHA, a spherical resin with the particle size of 0.4 mm, is a novel polyamide hydroxamic acid chelating resin containing acylamino and hydroxamic acid functional groups. A series of influences (pH, contact time, temperature, and the initial concentrations of rare earth ions) were investigated to determine the adsorption properties. The adsorption capacity for La(III), Ce(III), and Y(III) ions were 1.030, 0.962, and 1.450 mmol·g−1, respectively. Thermodynamic and kinetic studies were also carried out to show that the uptake of rare earth ions onto PAMHA fitted well the pseudo-second-order model and Langmuir isotherm, and the adsorption process was spontaneous endothermic. In addition, desorption of rare earth ions was achieved by using 2 mol·L−1 HNO3 and desorption efficiencies for La(III), Ce(III), and Y(III) ions were 98.4, 99.1, and 98.8%, respectively. Properties of PAMHA resin were characterized by scanning electron microscope (SEM), Fourier transform infrared spectrometry (FTIR), and X-ray photoelectron spectrometer (XPS). The results showed that there was coordination between the rare earth ions with PAMHA and rare metal ions were chemically adsorbed on the surface of the PAMHA.

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Polarographic Behaviour of 2‐Pyrilideniminobenzohydroxamic Acid

Misiego

Salinas

Cabanillas

et al. 1986

Bulletin des Soc Chimique

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SUMMARYThe polarographic DPP and DC techniques have been utilized to study the behaviour of 2-pyrilideniminobenzohydroxamic acid (PIBHA). This reagent gives rise to two cathodic waves, the E of the first wave is -1.07 V vs Ag/AgC1 at pH 3.38 and the E The principal chagacteristics of these waves have been studied and the corresponding possible mechanisms ofthe electrode process for both waves have been proposed.of the second Rave appeared at -1.45 V at the same pH.

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2‐Pyrilideniminobenzohydroxamic Acid as Analytical Reagent for the Spectrophotometric Determination of Vanadium(V)

Abstract: S U W YThe synthesis and analytical properties of 2-pyri1ideniminobenzohydroxamic acid (2-PIBHA) as well ar itr reactivity with inorganic ions are described. in rteel.Both methods were applied with sucess to the determination of vanadium(V)

Cited by 7 publications

References 7 publications

Preparation of a Novel Polystyrene-Poly(hydroxamic Acid) Copolymer and Its Adsorption Properties for Rare Earth Metal Ions

Preparation of a Novel Polystyrene-Poly(hydroxamic Acid) Copolymer and Its Adsorption Properties for Rare Earth Metal Ions

Adsorption Properties for La(III), Ce(III), and Y(III) with Poly(6-acryloylamino-hexyl hydroxamic acid) Resin

Polarographic Behaviour of 2‐Pyrilideniminobenzohydroxamic Acid

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