Investigation of sorption of calyx [4] arene and calix [4] resorcinarene tetraalkyl derivatives with the lichrosorb rp 18 surface by rp hplc and molecular modelling methods
Tetrahydroxycalix[4]arene, tetraalkoxycalix[4]arenes and tetraalkylcalix[4]resorcinarenes are capable to reversible adsorption on the surface of the hydrophobic support lichrosorb RP 18. Conditions reversed high-performance liquid chromatography.
Подобные документы
- 1. The molecular structure and chromatographic parameters of calix[4]аrеnehydroxymethylphosphonic acids
A basic chromatographic characteristics of biologically significant calix[4]аrenehydroxymethylphosphonic acids. A study sodium salts in a reversed-phase high-performance liquid chromatography. The structure of calix[4]аrenehydroxymethylphosphonic acids.
статья, добавлен 05.03.2014 Features complexation of adsorption of calixarene hydroxymethylphosphonic acid on the hypersil CN surface. Implementation the molecular modelling of calixarene hydroxymethylphosphonic acid and its complexes with tryptophan and N-acetyltryptophan amide.
статья, добавлен 20.03.2016Study of adsorption of cadmium (II) cations on the surface of macroporous amorphous silica with chemically modified b-cyclodextrin, its functional derivatives. The analysis of kinetic curves of sorption within the Lagergren model reaction pseudo order.
статья, добавлен 02.04.2014The behavior of globular proteins and humic acids of coal in aqueous/oil and aqueous/graphene systems by means of tritium tracer. Obtaining of adsorption isotherms by liquid scintillation spectrometry of tritium either in traditional performance.
статья, добавлен 02.04.2014Experimental study of interaction of water with the substrate and the role of cesium as a promoter for the adsorption of water on the strontium titanate surface. Enhancement of the catalytic properties of metal oxides by the addition of alkali species.
статья, добавлен 30.07.2016Synthesis of sorption-active material carrying groups 5% chlorosulfonic acid by radiation-induced graft polymerization of styrene monomer on the surface of non-woven polypropylene fabric with subsequent sulfonation of the grafted polystyrene chains.
статья, добавлен 02.04.2014Depth profiles of the near-surface region and chemical composition for amorphous films deposited from Ge33As12Se55 bulk glasses and their changes resulting ageing under ambient conditions have been studied by the methods of Auger electron spectroscopy.
автореферат, добавлен 02.04.2014The theoretical bases lactic acid adsorption at the mineral and carbon adsorbents. Influence of acidity on equilibrium and speed of absorption. Sorption facilities of zeolite to lactic acid in the static conditions. Adsorption capasity of adsorbents.
статья, добавлен 24.02.2016Investigation of the reaction of e-caprolactone with methacrylic acid. Synthesis of the compound chloride with polyethylene glycol ether. Peculiarities of surface active methacrylate monomer. Surface tension in aqueous solution in contact with air.
статья, добавлен 23.02.2016The interaction of CO molecules with clean and oxygen-modified Mo(110) surface has been investigated by means of density functional calculations. That on both clean and oxygencovered Mo(110) surfaces CO molecules are tilted with respect to the normal.
автореферат, добавлен 02.04.2014The combination of a macrocyclic platform and alfa-hydroxymethylphosphonate group for the inhibition activities of compounds. Computer-simulated docking studies using AutoDock 4.2 programme by the example of PTP1B. Stereoisomeric forms of the inhibitors.
статья, добавлен 29.01.2016The use of a sorbent to study the preliminary concentration of V (V) ions in the liquid phase. Establishment of optimal conditions for sorption. Influence of the concentration of metal ions and the time of reaching chemical equilibrium on sorption.
статья, добавлен 27.02.2021Obtaining an idea of the averaged molecular field characterizing the interaction of the sorbent molecule with the surface of the sorbent. Making an attempt to calculate the interaction energy in the case of sorption of non-polar adsorbent molecules.
статья, добавлен 24.09.2023Changes of structural and power parameters of molecules of Laevomycetinum, conditioned by adsorption. Descriptors of biological activity of Laevomycetinum are energy of НВМО and length sanctify O hydrogen - H.O in the propanediol fragment of molecule.
автореферат, добавлен 02.04.2014The kinetic of origin and transformation of the Fe(II)–Fe(III) LDH structures on the steel electrodes surface contacting with FeSO4 and Fe2(SO4)3 dispersion medium of the air oxygen into the system was studied. X-ray diffraction method of investigation.
автореферат, добавлен 02.04.2014The mechanism of binding of Cr(acac)3 molecules at active sites of the surface of silica and alumina supports. Silica support due to hydrogen bonding with acetylacetonate ligand. Interaction of p-electrons of acetylacetonate ligands with Al3+ sites.
статья, добавлен 19.03.2014Study of synthesis of silica-based organic-inorganic hybrid materials with grafted 2-aminoethylpyridine functional groups. By elemental analysis to determine the composition of substances. Analysis of surface-structural characteristics of SiAEP.
статья, добавлен 02.04.2014The development of selective oxidation of simply accessible dihydroxy-dypropoxycalix[4]arene to nitrocalixmonoquinone by mixture of 75 % nitric acid and glacial acetic acid. Synthone for design of optical sensors and redox-sensitive bio-active compounds.
статья, добавлен 11.02.2014Equilibrium spatial structure of the Si89(OH)43 H36 cluster model simulated for a pyramid-like formation on porous silicon surface has been calculated within the frameworks of density functional. Distribution of electronic charge and static field is got.
автореферат, добавлен 02.04.2014Research and characteristics of the methanation of carbon dioxide under atmospheric pressure over a catalyst containing 5% of metals prepared by the impregnation method. Measured of the specific surface area by low-temperature adsorption of argon.
статья, добавлен 29.09.2016Preparative and research methods of biochemistry, molecular biology, and biotechnology. Application of the affinity of biological molecules to complementary structures. Consideration of using scheme for activation cascade of the blood clotting system.
статья, добавлен 15.04.2024- 22. Kinetics of liquid-phase hydrogenation of n-valeraldehyde to n-amyl alcohol over a Ru/Al2O3 catalyst
Schematic diagram of the experimental setup for hydrogenation. Effect of catalyst loading on initial rates of reaction. The use of gas chromatography for the analysis of the reaction. Langmuir–Hinshelwood-type models for single, dualsite mechanisms.
статья, добавлен 20.10.2014 An ion-pair model has been proposed explaining the origin of acidic sites at the silica surface–aqueous solution interface. Importance of role of the dissociated water is shown in the hydrolysis of the saccharose adsorbed on the surface of silica.
автореферат, добавлен 02.04.2014It has been shown that well crystallized cobalt- and iron-containing spinel ferrites are formed at neutral pH value of aqueous medium. The contact of steel surface with alkaline medium results in formation of weakly crystallized iron oxyhydroxides.
статья, добавлен 04.04.2014Influence of temperature on the photoluminescence of rhodamine deposited on array of the gold nanoparticles was studied. The factor of surface plasmonic enhancement of rhodamine luminescence. Electron-phonon scattering and thermal expansion of the gold.
статья, добавлен 30.07.2016