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...
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1996
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v407_n1-2_p219_Ramirez http://hdl.handle.net/20.500.12110/paper_15726657_v407_n1-2_p219_Ramirez |
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paper:paper_15726657_v407_n1-2_p219_Ramirez2023-06-08T16:24:42Z The adsorption of nickel dimethylglyoxime complex on mercury Ramirez, Silvana Andrea María Gordillo, Gabriel Jorge 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. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v407_n1-2_p219_Ramirez 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, Silvana Andrea María Gordillo, Gabriel Jorge 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. |
| author |
Ramirez, Silvana Andrea María Gordillo, Gabriel Jorge |
| author_facet |
Ramirez, Silvana Andrea María Gordillo, Gabriel Jorge |
| author_sort |
Ramirez, Silvana Andrea María |
| 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 |
| publishDate |
1996 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v407_n1-2_p219_Ramirez http://hdl.handle.net/20.500.12110/paper_15726657_v407_n1-2_p219_Ramirez |
| work_keys_str_mv |
AT ramirezsilvanaandreamaria theadsorptionofnickeldimethylglyoximecomplexonmercury AT gordillogabrieljorge theadsorptionofnickeldimethylglyoximecomplexonmercury AT ramirezsilvanaandreamaria adsorptionofnickeldimethylglyoximecomplexonmercury AT gordillogabrieljorge adsorptionofnickeldimethylglyoximecomplexonmercury |
| _version_ |
1768545300659568640 |