Interacción of 2-aminophenol, 4-aminophenol, 2-nitrophenol and 4-nitrophenol with manganese and nickel hexacyanoferrate (II) complexes
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Rev. Bol. Quim
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Spanish title: Interacción de 2-aminofenol (2AF), 2-nitrofenol (2NF), 4-aminofenol (4AF) y 4-nitrofenol (4NF) con complejos de hexacianoferrocianuro (II) de manganeso y níquel. La interacción adsorbativa del 2-aminofenol (2AF), 2-nitrofenol (2NF), 4-aminofenol (4AF) y 4-nitrofenol (4NF) con ferrocianuro de manganeso y níquel fue estudiada en condiciones de neutralidad (pH 7.01 ± 0.01) y en condiciones térmicas (T° 30 ± Iº C). El progreso de adsorción fue monitoreado espectrofotométricamente por la medida de la absorbancia de la solución de aminoácidos y su correspondiente <img border=0 width=25 height=13 src="../img/a02_figura02.gif">. La adsorción del tipo de Langmuir es controlada por la concentración de las soluciones de los fenoles sustituidos en el rango 10-4 to 10-5. mol/L. El ferrocianuro de níquel mostró una mayor habilidad adsorbativa en comparación con el ferrocianuro de manganeso con los cuatro adsorbatos fenólicos. El 4-Nitrofenol y el 2-aminofenol mostraron tener mayor y menor afinidad respectivamente con ambos ferrocianuros metálicos estudiados.
The adsorptive interaction of 2-aminophenol (2 - AP), 2 - nitrophenol (2 - NP), 4 - aminophenol (4 - AP) and 4 -nitrophenol (4 - NP) with manganese and nickel ferrocyanides have been studied at neutral (pH 7.01 ± 0.01) and at thermal (T° 30 ±1ºC) conditions. The progress of adsorption was followed spectrophotometrically by measuring the absorbance of amino acids solution at their corresponding <img border=0 width=25 height=13 src="../img/a02_figura02.gif">. The Langmuir type of adsorption is followed in the concentration range of 10-4 to 10-5 mol/L of substituted phenol solutions. Nickel ferrocyanide was found to have greater adsorption ability in comparison to manganese ferrocy anide with all four substituted phenol adsorbates. 4 -Nitrophenol and 2 - aminophenol was found to have greater and lesser affinity, respectively with both metal ferrocyanides studied.
The adsorptive interaction of 2-aminophenol (2 - AP), 2 - nitrophenol (2 - NP), 4 - aminophenol (4 - AP) and 4 -nitrophenol (4 - NP) with manganese and nickel ferrocyanides have been studied at neutral (pH 7.01 ± 0.01) and at thermal (T° 30 ±1ºC) conditions. The progress of adsorption was followed spectrophotometrically by measuring the absorbance of amino acids solution at their corresponding <img border=0 width=25 height=13 src="../img/a02_figura02.gif">. The Langmuir type of adsorption is followed in the concentration range of 10-4 to 10-5 mol/L of substituted phenol solutions. Nickel ferrocyanide was found to have greater adsorption ability in comparison to manganese ferrocy anide with all four substituted phenol adsorbates. 4 -Nitrophenol and 2 - aminophenol was found to have greater and lesser affinity, respectively with both metal ferrocyanides studied.
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Vol. 33, No. 5