IR@NEIST - North East Institute of Science and Technology (CSIR)
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Adsorption and surface complexation of trimesic acid at the alpha-Alumina electrolyte interface
Get PDFAdsorption kinetics, adsorption isotherms and surface complexation of trimesic acid onto α-alumina surfaces were investigated. Adsorption
kinetics of trimesic acid with an initial concentration of 0.5 mM onto α-alumina surfaces were carried out in batch method in presence of 0.05 mM
NaCl(aq) at pH 6 and 298.15, 303.15 and 313.15 K. Adsorption isotherms were carried out at 298.15 K, pH 5–9, and 0.05 mMNaCl(aq) by varying
trimesic acid concentration from 0.01 to 0.6 mM. Three kinetics equations such as pseudo-first-order, pseudo-second-order and Ho equations were
used to estimate the kinetics parameters of the adsorption of trimesic acid on the α-alumina surfaces. Ho equation fits the experimental kinetics
data significantly better and the estimated equilibrium concentration is in excellent agreement with the experimental value. The adsorption data
were fitted to Freundlich and Langmuir adsorption model and the later best fits the adsorption isotherms. Comparison of adsorption density of
trimesic acid with that of benzoic and phthalic acids follows the sequence: benzoic acid < trimesic acid < phthalic acid. The negative activation
energy and the Gibbs free energy for adsorption indicate that the adsorption of trimesic acid onto α-alumina is spontaneous and facile. DRIFT
spectroscopic studies reveal that trimesate forms outer-sphere complexes with the surface hydroxyl groups that are generated onto α-alumina
surfaces in the pH range of the stud
A quantitative structure activity relationship study on permeation of amino acids through membranes, In--Book of Abstract, "Green Technology And Sustainable Development, Chemcon 2008,
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Iodine-Catalyzed Highly Effective Pictet Spengler Condensation: An Efficient Synthesis of Tetrahydro-b-carbolines
Get PDFMolecular iodine was found to be an efficient catalyst for the twocomponent
Pictet–Spengler condensation of tryptamine with aldehydes, which
leads to the formation of tetrahydro-b-carbolines in high yields
An efficient modification of the Hofmann rearrangement : synthesis of methyl carbamates
Get PDF—A series of methyl carbamates was synthesized using NaOCl as an oxidant in the presence of KF/Al 2O 3/MeOH at reflux
in excellent yields
The effects of attenuation and site on the spectra of microearthquakes in the Jubilee Hills region of Hyderabad, India
Get PDFNon-isothermal thermogravimetric pyrolysis kinetics of waste petroleum refinery sludge by isoconversional approach
Get PDFA novel three-component reaction: Synthesis of some complex annelated quinolines from simple acetanilides and via intramolecular 1,3-dipolar cycloaddition of azide to nitrile
Get PDFAbstract: Synthesis of a novel class of tetrazolo[4¢,5¢:1,6]pyrido[2,3-d]quinolines
from simple acetanilides and via intramolecular
1,3-dipolar cycloaddition of azides to nitriles using a
three-component one-pot protocol is reported
Electrical properties of thermally evaporated doped and undoped films of CdSe
Get PDFElectrical characteristics of Ag-doped and undoped films
of CdSe have been reported. The activation energies at
lower and elevated temperatures have been found to be
0.22 and 0.6eV, respectively. The Sn/CdSe junction
exhibits Schottky barrier characteristics with diode
ideality factor deviating from unity. Barrier height
obtained from C-V plot and J- V plot are 0.8 and 0.72eV,
respectively. The junction has been endowed with high
series resistance