Sorption mechanism and prediction of sorbents' behaviour in physicochemical systems

Мелихов, И. В.; Berdonosova, D. G.; Sigeikin, G. I.

doi:10.1070/rc2002v071n02abeh000688

Cited by 10 publications

(3 citation statements)

References 118 publications

(134 reference statements)

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“…where N e -is the effective number of valence electrons; µ-chemical potential; ηhard;contribution skeleton in absolute energy. (4) where 𝛥ldistance between maximum partition peak;…”

Section: Resultsmentioning

confidence: 99%

“…The main purpose of most molecular solvation models is to study conformational, tautomeric and other transformations of solvates, as well as to determine the conditions for the formation of their dimers, tees and other complexes [4]. Sorbate particles not only compete with each other for sorption centers, but also change the sorption ability of the centers in relation to competitors.…”

Section: Introductionmentioning

confidence: 99%

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Quant-Chemical Modeling Solvatofobic Effect Bei Sorption and Partition Organic Compounds Nanocomposit Sorbent

O.V.

2019

Open Acc J Chem

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Solvation plays a key role in the regulation of many chemical sorption processes. The solvent can be used not only as a environment, but also as an effective means to study the nature of the chemical interaction and reactivity of substances. Therefore, understanding and a priori assessment of the effects of the environment remains one of the important practical tasks of modern chemistry. We present some results of experimental studies of heterogeneous catalytic reactions occurring through several elementary stages on the surface of the nanocomposit. Nanostructures in a polymer composite are defined as regular micro heterogeneities (i.e. areas of a polymer material with an interfacial surface) of nanometer dimensions, which largely determine the unique properties (catalytic, magnetic, semiconductor, nonlinear optical, etc.) of Nanocomposites. As nanostructure, polymer systems, providing the formation of nanoparticles in solutions, the most promising are block copolymer micelles and dendrimers, which can be adsorbed on the surface to form monolayers. Most special properties of nanostructures are the result of two main effects: a. the share of surface atoms in the total number of atoms is a significant share, which leads to the dominant role of the surface (surfacedominated effects); b. the electrons in the nanostructure are in a bounded region of space, which leads to quantum dimensional effects and reduced-dimensional effects.With the use of the density functional theory (DFT) is investigated solvatofobic effect in the organic compound separation in Nanocomposites sorbent gas chromatographic method. On the basis of electrostatic pseudo phase model of micellar catalysis the coefficients of activity of transfer of organic molecules from solvent to micellar pseudo phase are calculated. According to the principles of the theory hard and soft acid and alkali (HSAF) calculated energy non-valent interactions, contributing to the processes of self-assembly. Hypothesis that the formation of bifurcate halogen bonds during salvation can contribute to the formation of molecular bridge between the associated molecules.

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“…where N e -is the effective number of valence electrons; µ-chemical potential; ηhard;contribution skeleton in absolute energy. (4) where 𝛥ldistance between maximum partition peak;…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quant-Chemical Modeling Solvatofobic Effect Bei Sorption and Partition Organic Compounds Nanocomposit Sorbent

O.V.

2019

Open Acc J Chem

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“…The shortcoming which impedes wide application of ion exchange was the absence of properties of selective absorption of available stock of ion exchangers and their limited exchange capacity. The latter circumstance in particular, is a very serious obstacle, limiting the use of the ion exchange process only in those cases where a given metal ion is in very dilute solutions, which are inconvenient for ordinary chemical processing [14] .…”

Section: Discussionmentioning

confidence: 99%

Extraction of Ag(I) ion traces from aqueous solutions using inorganic thin film and nanocrystalline sorbents

Mahmood¹,

Бахтеев²,

Mohaisen³

et al. 2020

ATMPH

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In this paper, we have presented experimental data and the theoretical basis for the extraction of silver ions from aqueous solutions, using metal sulfides (PbS, ZnS, MnS, CuS, FeS) in the form of thin films, nanocrystals in gel matrices, and precipitates. A mathematical model, taking into account the sorption of Ag(I) due to a three-stage ion exchange in the occurence of solid-liquid phase contact, containing complexing entities (Na 2 S 2 O 3 , N 2 H 4 CS, N 3 H 5 CS, NH 3 , EDTA, TEA). This model was applied in the technology of equipment design.

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ChemInform Abstract: Sorption Mechanism and Prediction of Sorbents′ Behavior in Physicochemical Systems

2002

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Sorption mechanism and prediction of sorbents' behaviour in physicochemical systems

Cited by 10 publications

References 118 publications

Quant-Chemical Modeling Solvatofobic Effect Bei Sorption and Partition Organic Compounds Nanocomposit Sorbent

Quant-Chemical Modeling Solvatofobic Effect Bei Sorption and Partition Organic Compounds Nanocomposit Sorbent

Extraction of Ag(I) ion traces from aqueous solutions using inorganic thin film and nanocrystalline sorbents

ChemInform Abstract: Sorption Mechanism and Prediction of Sorbents′ Behavior in Physicochemical Systems

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