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Adsorption deformation of a microporous AR-V carbon adsorbent during the adsorption of n-hexane
Pleiades Publishing Ltd - Tập 85 - Trang 1960-1964 - 2011
V. V. Nabiulin, A. A. Fomkin, A. V. Tvardovskiy
Adsorption isotherms of n-hexane and adsorption deformation isotherms of an AR-V carbon adsorbent are measured in a pressure range of 1 Pa to 20 kPa at temperatures of 254.8–353 K. It is found that, except for the initial pressure range (p < 800 Pa), the relative linear deformation increases with increasing pressure and decreases with increasing temperature. At temperatures of 254.8, 273.2, and 29...... hiện toàn bộ
Nonlinear optical properties of solutions of heavy fullerenes in the near-ultraviolet region
Pleiades Publishing Ltd - Tập 85 - Trang 1603-1608 - 2011
V. V. Sherstnev, N. A. Charykov, K. N. Semenov, N. I. Alekseev, V. A. Keskinov, O. A. Krokhina
Nonlinear optical properties (particularly optical limiting) are determined for solutions of heavy fullerenes C76 + C78 + C84 + C90 + …, in the near-ultraviolet region (λ ≈ 280 ± 7 nm). It is shown that no optical limiting is observed in solutions of light fullerenes (C60 and C70), but found in solutions of water-soluble fullerenol-d (a mixture of oxypolyalcohols of fullerene C60-C60(OH) ...... hiện toàn bộ
Comparative analysis of effective atomic charges in the N-methylmorpholine-N-oxide molecule
Pleiades Publishing Ltd - - 2007
N. P. Novoselov, Е. S. Sashina, A. P. Kuznetsova, В. Е. Петренко
Sorption of catechins under conditions of reverse-phase high-efficiency liquid chromatography
Pleiades Publishing Ltd - Tập 84 - Trang 1421-1427 - 2010
R. V. Shafigulin, K. V. Egorova, A. V. Bulanova
The physico-chemical principles of catechin sorption from various polar solvents onto silica gel modified with octadecyl groups were studied. Thermodynamic characteristics of the sorption were calculated, and the applicability of different models of retention was demonstrated for catechins under the conditions of reverse-phase high-efficiency liquid chromatography.
Deformation and thermodynamic instability of a C84 fullerene cage
Pleiades Publishing Ltd - - 2010
A. R. Khamatgalimov, V. I. Kovalenko
Quantum chemical calculations of electronic and geometric structures were performed for molecules of 24 isomers of C84 fullerenes obeying the isolated pentagons rule. The reasons for the instability of isomers not obtained experimentally were established, and the possibility of obtaining some of them was proven. It was shown that the deformation of hexagons and pentagons is the most important geom...... hiện toàn bộ
Removal Mechanisms of Phenanthrene and Benzo(a)pyrene from Wastewater by Combining Bacillus subtilis with Ferrate
Pleiades Publishing Ltd - Tập 95 - Trang S242-S251 - 2022
Shuyan Zang, Qian Zhao, Mario Alberto Gomez, Xiaochen Luo, Bo Li, Xiaofeng Wang
A new method that combines Bacillus subtilis (B. subtilis) with K2FeO4 has been developed to enhance the degradation of phenanthrene (Phe) and benzo(a)pyrene (BaP) in wastewater. The results showed that (i) BaP and Phe after pre-oxidation with K2FeO4 were more easily bio-degraded by the cooperating methods, showed faster kinetics and shorter half-life (t1/2); (ii) removal rate of Phe was always hi...... hiện toàn bộ
Method of moving parabolas for determining the compositions of coexisting phases in binary systems
Pleiades Publishing Ltd - Tập 89 - Trang 1745-1748 - 2015
A. Yu. Zakharov, A. A. Schneider
A simple and fast method for determining the compositions of coexisting phases in binary systems is proposed and validated. The method is based on the precise determination of common tangents to a sequence of pairs of parabolas approximating the free energy in concave regions separated by convex regions.
Kinetics and Equilibrium Sorption of Cation Cu2+ by Polyampholyte Hydrogels Based on Hydrolyzed Polyacrylamide and Aliphatic Diamines
Pleiades Publishing Ltd - Tập 96 Số 3 - Trang 645-647 - 2022
В. А. Липин, A. N. Evdokimov, Т. А. Суставова, Yu. A. Petrova
Multiplicity of Te–Te Bonds in Tellurium-Containing Lanthanide Compounds
Pleiades Publishing Ltd - - 2019
V. N. Serezhkin, M. Albakajaji, L. B. Serezhkina
The structures of 272 compounds containing 337 LnTen coordination polyhedra, where Ln is any lanthanide from La to Lu in the crystals, are analyzed using Voronoi–Dirichlet(VD) polyhedra. It is shown that the parameters of VD polyhedra allow determination of the valence state of Ln atoms. It is established that tellurides contain Ln(II) and Ln(III) atoms bonding from 4 to 9 tellurium atoms that exi...... hiện toàn bộ
A CAM-B3LYP DFT Investigation of Atenolol Adsorption on the Surface of Boron Nitride and Carbon Nanotubes and Effect of Surface Carboxylic Groups
Pleiades Publishing Ltd - Tập 94 - Trang 1678-1693 - 2020
Maryam Hesabi, Ghasem Ghasemi
The adsorption behavior of atenolol molecule over the pristine carbon nanotube and boron nitride nanotube as well as functionalized carbon nanotube was performed employing the B3LYP and CAM-B3LYP methods with 6-311G(d, p) basis set in two phases (gas and water solution). We used natural bond orbital, non-covalent interactions and the quantum theory of atoms in molecules to investigate the hydrogen...... hiện toàn bộ
Tổng số: 5,077   
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