Lewis Acid–Base Behavior in Aqueous Solution: Some Implications for Metal Ions in Biology

1995 ◽  
pp. 89-146 ◽  
Author(s):  
Robert D. Hancock ◽  
Arthur E. Martell
Keyword(s):  
Aqueous Solution ◽  
Metal Ions ◽  
Lewis Acid ◽  
Acid Base

Post-synthetic metalation in an anionic MOF for efficient catalytic activity and removal of heavy metal ions from aqueous solution

2016 ◽  
Vol 52 (13) ◽  
pp. 2831-2834 ◽  
Author(s):  
Anindita Chakraborty ◽  
Sohini Bhattacharyya ◽  
Arpan Hazra ◽  
Ashta Chandra Ghosh ◽  
Tapas Kumar Maji
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Catalytic Activity ◽  
Metal Ions ◽  
Lewis Acid ◽  
Heavy Metal Ions ◽  
Toxic Metal ◽  
Acid Catalyst ◽  
Toxic Metal Ions ◽  
Lewis Acid Catalyst

An anionic MOF shows the potential to capture toxic metal ions from water and the CuII@AMOF hybrid obtained through post-synthetic metalation is used as a Lewis acid catalyst.

scholarly journals PHYTIC ACID: AN ANALYTICAL INVESTIGATION

1961 ◽  
Vol 39 (6) ◽  
pp. 1290-1297 ◽  
Author(s):  
E. C. Brown ◽  
M. L. Heit ◽  
D. E. Ryan
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Phytic Acid ◽  
Titration Curve ◽  
Analytical Investigation ◽  
Acid Base ◽  
Acid Structure

Acid–base titrations in aqueous and non-aqueous solutions, titrations with metal ions, and analyses of various metal phytates support beyond question the 18-acid structure of phytic acid. Six of the hydrogens are too weakly acidic to be ordinarily titratable in water; in aqueous solution, two distinct breaks occur in the titration curve corresponding to the titration of 8 and 12 protons of phytic acid.

Patterns in Lewis acid-base interactions in aqueous solution

1980 ◽  
Vol 40 ◽  
pp. X61-X62 ◽  
Author(s):  
Robert D. Hancock ◽  
Fabrizio Marsicano
Keyword(s):  
Aqueous Solution ◽  
Lewis Acid ◽  
Acid Base

REMOVAL OF HEAVY METAL Cr (II), Ni (II), Cu (II), Zn (II), Cd (II), Pb (II) IONS FROM AQUEOUS SOLUTION BY MENTHA PIPERITA EXTRACT

2020 ◽  
pp. 15-20
Author(s):  
Ersin Yucel ◽  
Mine Yucel
Keyword(s):  
Aqueous Solution ◽  
Metal Ions ◽  
High Efficiency ◽  
Correlation Coefficients ◽  
Langmuir Model ◽  
Mentha Piperita ◽  
Freundlich Model ◽  
Biosorption Capacity ◽  
Peppermint Extract ◽  
The Stability

In this study, the usage of the peppermint (Mentha piperita) for extracting the metal ions [Mg (II), Cr (II), Ni (II), Cu (II), Zn (II), Cd (II), Pb (II)] that exist at water was investigated. In order to analyze the stability properties, Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherms were used at removing the metal ions and the highest correlation coefficients (R2) were obtained at Langmuir isotherm. Therefore, it is seen that the Langmuir model is more proper than the Freundlich model. However, it was found that the correlation coefficients of removing Ni and Cd is higher at Freundlich model than Langmuir and low at Dubinin-Radushkevich isotherm. It is established that the biosorption amount increase depends on the increase of biosorbent and it can be achieved high efficiency (95%) even with small amount (0.6 mg, peppermint extract) at lead ions. It is also determined that the peppermint extracted that is used at this study shows high biosorption capacity for metal ions and can be used for immobilization of metals from polluted areas.

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