The Sorption of Amines by Silica Gel

Brown, Marjorie J.; Foster, A. Graham

doi:10.1021/j150498a018

Cited by 5 publications

(3 citation statements)

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“…While the main changes in volume of conjugate ions in a redox couple are associated with the difference of electrostriction between the pair of ions, significant effects which must be considered can also arise from the change of ionic radius or ligand-to-metal bond length (24,25). Thus, in an isoelectronic series, e.g., Na +, No, and F-, changes of charge produce appreciable changes, ~r, of radii, from 0.95, through 1.1-1.36A, respectively, for these three elements.…”

Section: Discussionmentioning

confidence: 99%

“…It is convenient to consider the permittivity near an ion in terms of a step-function (39) related to the semiempirical expression (41) for the differential dielectric constant Ed as f(E) ed ----[(Eo --no2)/(1 -~ bE2)] + no 2 [24] where no 2 is the square of the refractive index, eo is the static, zero-field dielectric constant, and b is a coefficient related to field-dependence of ed derived in Booth's theory (42). Two cases of interest arise in electrostriction theory (37): When bE2 << 1 and bE 2 >> 1, i.e., for low and high fields.…”

Section: Stokes Hydration Radiimentioning

confidence: 99%

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Significance of Effects of High Pressure on Kinetics of Electrode Reactions: II . The Nature of Solvent Reorganization in the Activation Process of an Electrochemical Redox Reaction

Conway

Currie

1978

J. Electrochem. Soc.

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New information on the nature of the solvent reorganization process involved in formation of the transition state in an electrochemical redox reaction [the Fe (CN)63-/Fe(CN)64. couple] is given by studies of the kinetics of this process at high pressures in aqueous solutions at Au. The apparent activation volume is evaluated together with the true volumes of activation for the forward and reverse directions of the redox reaction. By means of calculations of the electrostriction associated with the long-range dielectric polarization in comparison with that associated with ion-solvent interaction in the :primary hyclration shell, it is shown that the activation process must be mainly (7b%) due to short-range solvent reorganization in the primary shell. This is contrary to what has often been assumed in the interpretation of thei energy of activation of ionic redox reactions. The experiments also allow some cteduction to be made about the "symmetry" of the transition states in the electrochemical reaction in comparison with that in the corresponding homogeneous reaction, in so far as solvent reorganization is concerned.

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Section: Discussionmentioning

confidence: 99%

Section: Stokes Hydration Radiimentioning

confidence: 99%

Significance of Effects of High Pressure on Kinetics of Electrode Reactions: II . The Nature of Solvent Reorganization in the Activation Process of an Electrochemical Redox Reaction

Conway

Currie

1978

J. Electrochem. Soc.

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“…Miettinen (218) has revealed a new technique which improved separation and identification of the neutral amino acids, most of which (even the leucines) could be completely separated from hydrolyzates in onedimensional experiments. The glycine peptides were studied by Brockmann and Musso (46), organic acids by Opienska-Blauth and coworkers (237), dyes by Masuyama and Takahashi (211), and fluoresceins by Graichen (180).…”

Section: Chromatographymentioning

confidence: 99%

Adsorption

Harris¹

1953

Ind. Eng. Chem.

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Recently interest has turned to the study of adsorption of mixed gases and the resolution of such mixtures. This interest was extended into analogous liquid phase systems; and commercial applications of both fields have been made. There has been a decrease in interest in chromatographic studies as compared to the recent past. * Adsorption of ions from solution by solids is at times interrelated with ion exchange, elsewhere discussed. However, adsorption can and does occur alone in some cases and simultaneously with ion exchange in others. Venturello and Burdese (298) found that alumina adsorbed cupric ions in part reversibly and that the irreversible amount increased with time of con-Vol. 45, No. 1 tact. The role of anions in cation exchange media was discussed by ICantor and coworkers (174).

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Textural Characterization of Porous Carbons by Physical Adsorption of Gases

Linares‐Solano¹

1986

Carbon and Coal Gasification

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The Sorption of Amines by Silica Gel

Cited by 5 publications

References 0 publications

Significance of Effects of High Pressure on Kinetics of Electrode Reactions: II . The Nature of Solvent Reorganization in the Activation Process of an Electrochemical Redox Reaction

Significance of Effects of High Pressure on Kinetics of Electrode Reactions: II . The Nature of Solvent Reorganization in the Activation Process of an Electrochemical Redox Reaction

Adsorption

Textural Characterization of Porous Carbons by Physical Adsorption of Gases

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