The adsorption of nickel dimethylglyoxime complex on mercury

The adsorption of the Ni(II) dimethylglyoxime complex, Ni(DMGH)2, on mercury was studied as a function of time by voltammetric and differential capacitance methods in ammonia and borate buffers. The influence of the adsorption potential and the complex concentration was also studied. The adsorption...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Ramirez, S., Gordillo, G.J., Posadas, D.
Formato: JOUR
Materias:
Adsorption
Mercury
Nickel dimethylglyoxime complex
Adsorption isotherms
Ammonia
Cyclic voltammetry
Gibbs free energy
Mercury (metal)
Nickel compounds
Reaction kinetics
Adsorption potential
Differential capacitance method
Organometallics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15726657_v407_n1-2_p219_Ramirez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_15726657_v407_n1-2_p219_Ramirez
record_format dspace
spelling todo:paper_15726657_v407_n1-2_p219_Ramirez2023-10-03T16:27:24Z The adsorption of nickel dimethylglyoxime complex on mercury Ramirez, S. Gordillo, G.J. Posadas, D. Adsorption Mercury Nickel dimethylglyoxime complex Adsorption Adsorption isotherms Ammonia Cyclic voltammetry Gibbs free energy Mercury (metal) Nickel compounds Reaction kinetics Adsorption potential Differential capacitance method Nickel dimethylglyoxime complex Organometallics The adsorption of the Ni(II) dimethylglyoxime complex, Ni(DMGH)2, on mercury was studied as a function of time by voltammetric and differential capacitance methods in ammonia and borate buffers. The influence of the adsorption potential and the complex concentration was also studied. The adsorption equilibrium shows a reversible behaviour. The experimental data conform to the Frumkin adsorption isotherm. The standard electrochemical Gibbs energy of adsorption and the interaction parameter obtained from the fit indicate the presence of attractive forces between adsorbed molecules and a standard electrochemical Gibbs energy of adsorption comparable with those of pentanol and hexanol. The experimental rate of adsorption, at short times, is independent of time. It is also linearly dependent on the complex concentration and exponentially dependent on the adsorption potential. The experimental rate law can be explained with a model considering the adsorption kinetics as being controlled by the adsorption of the complex. Fil:Ramirez, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gordillo, G.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15726657_v407_n1-2_p219_Ramirez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Adsorption
Mercury
Nickel dimethylglyoxime complex
Adsorption
Adsorption isotherms
Ammonia
Cyclic voltammetry
Gibbs free energy
Mercury (metal)
Nickel compounds
Reaction kinetics
Adsorption potential
Differential capacitance method
Nickel dimethylglyoxime complex
Organometallics
spellingShingle Adsorption
Mercury
Nickel dimethylglyoxime complex
Adsorption
Adsorption isotherms
Ammonia
Cyclic voltammetry
Gibbs free energy
Mercury (metal)
Nickel compounds
Reaction kinetics
Adsorption potential
Differential capacitance method
Nickel dimethylglyoxime complex
Organometallics
Ramirez, S.
Gordillo, G.J.
Posadas, D.
The adsorption of nickel dimethylglyoxime complex on mercury
topic_facet Adsorption
Mercury
Nickel dimethylglyoxime complex
Adsorption
Adsorption isotherms
Ammonia
Cyclic voltammetry
Gibbs free energy
Mercury (metal)
Nickel compounds
Reaction kinetics
Adsorption potential
Differential capacitance method
Nickel dimethylglyoxime complex
Organometallics
description The adsorption of the Ni(II) dimethylglyoxime complex, Ni(DMGH)2, on mercury was studied as a function of time by voltammetric and differential capacitance methods in ammonia and borate buffers. The influence of the adsorption potential and the complex concentration was also studied. The adsorption equilibrium shows a reversible behaviour. The experimental data conform to the Frumkin adsorption isotherm. The standard electrochemical Gibbs energy of adsorption and the interaction parameter obtained from the fit indicate the presence of attractive forces between adsorbed molecules and a standard electrochemical Gibbs energy of adsorption comparable with those of pentanol and hexanol. The experimental rate of adsorption, at short times, is independent of time. It is also linearly dependent on the complex concentration and exponentially dependent on the adsorption potential. The experimental rate law can be explained with a model considering the adsorption kinetics as being controlled by the adsorption of the complex.
format JOUR
author Ramirez, S.
Gordillo, G.J.
Posadas, D.
author_facet Ramirez, S.
Gordillo, G.J.
Posadas, D.
author_sort Ramirez, S.
title The adsorption of nickel dimethylglyoxime complex on mercury
title_short The adsorption of nickel dimethylglyoxime complex on mercury
title_full The adsorption of nickel dimethylglyoxime complex on mercury
title_fullStr The adsorption of nickel dimethylglyoxime complex on mercury
title_full_unstemmed The adsorption of nickel dimethylglyoxime complex on mercury
title_sort adsorption of nickel dimethylglyoxime complex on mercury
url http://hdl.handle.net/20.500.12110/paper_15726657_v407_n1-2_p219_Ramirez
work_keys_str_mv AT ramirezs theadsorptionofnickeldimethylglyoximecomplexonmercury
AT gordillogj theadsorptionofnickeldimethylglyoximecomplexonmercury
AT posadasd theadsorptionofnickeldimethylglyoximecomplexonmercury
AT ramirezs adsorptionofnickeldimethylglyoximecomplexonmercury
AT gordillogj adsorptionofnickeldimethylglyoximecomplexonmercury
AT posadasd adsorptionofnickeldimethylglyoximecomplexonmercury
_version_ 1807316093653483520

Ejemplares similares