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Conditional equilibrium constants in multicomponent heterogeneous adsorption: The conditional affinity spectrum
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10.1063/1.2162876
/content/aip/journal/jcp/124/4/10.1063/1.2162876
http://aip.metastore.ingenta.com/content/aip/journal/jcp/124/4/10.1063/1.2162876
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Three-dimensional plot of the multidimensional affinity spectrum underlying NICA isotherm. Parameters: . (b) Affinity spectrum of (a) represented as a contour plot. Iso- curves for (a), (b), (c), and are also depicted in the figure.

Image of FIG. 2.
FIG. 2.

(a) Binding curve vs in a system where two cations (proton denoted as 1 and a metal ion denoted as 2) compete for the binding sites at different values: (a), (b), (c), (d), (e), and (f). The binding curves correspond to a NICA isotherm with , , , and . (b) Conditional affinity spectra underlying the binding curves depicted in (a) indicating the effective distribution of affinities seen by the metal ion at the corresponding proton concentration.

Image of FIG. 3.
FIG. 3.

Mean of the CAS corresponding to a NICA isotherm as a function of . Parameters: and (a), (b), (c), (d).

Image of FIG. 4.
FIG. 4.

Variance of the CAS corresponding to a NICA isotherm as a function of . Parameters: , , and (a), (b), (c), (d), (e). Curves (f) and (g) correspond to the fully correlated and fully uncorrelated cases, respectively.

Image of FIG. 5.
FIG. 5.

Variance of the CAS underlying the Frumkin isotherm as a function of . Parameters: , and (a), (b), (c), (d), (e), and (f). Inset: correlation coefficient, , for the same isotherm with as a function of .

Image of FIG. 6.
FIG. 6.

CAS of a system with selective (1) and nonselective sites for the metal at different values: (a) , (b) , (c) , (d) , and (e) . The peak (1) corresponds to the selective sites with weight described by a Sips distribution and parameters . The peak (2) corresponds to the nonselective sites of weight described by the CAS underlying the NICA isotherm with , , and .

Image of FIG. 7.
FIG. 7.

Linear chain able to bind protons (with stability constant ) and metals. The metals can be bound in two different forms: single bond (with stability constant ) and bidentate bond (with stability constant ).

Image of FIG. 8.
FIG. 8.

(a) vs curves as given in Eq. (53) and corresponding to the model depicted in Fig. 7 for different values: (a) , (b) , (c) , (d) , (e) , (f) , and (g) . Parameters: , , and . CAS corresponding to the binding curves depicted in (a).

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/content/aip/journal/jcp/124/4/10.1063/1.2162876
2006-01-30
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Conditional equilibrium constants in multicomponent heterogeneous adsorption: The conditional affinity spectrum
http://aip.metastore.ingenta.com/content/aip/journal/jcp/124/4/10.1063/1.2162876
10.1063/1.2162876
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