Results 21 to 30 of about 141,089 (307)

Time-independent desorption hysteresis in liquid phase sorption experiments: the concept and the models based on gate-sorption site coupling

, 2022
Sorption-desorption hysteresis (SDH) is often observed in liquid phase (solution) sorption experiments with various chemicals on complex natural materials, including soils and sediments.
Mikhail, Borisover
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Catalytic Production of Levulinic and Formic Acids from Fructose over Superacid ZrO₂–SiO₂–SnO₂ Catalyst

Colloids and Interfaces, 2022
Catalytic conversion of fructose to levulinic and formic acids over tin-containing superacid (H0 = −14.52) mixed oxide was studied. Mesoporous ZrO2–SiO2–SnO2 (Zr:Si:Sn = 1:2:0.4) was synthesized by the sol–gel method.
Nataliia Hes, Artur Mylin, Svitlana Prudius   +2 more
doaj   +1 more source

Water Sorption by Polyheteroarylenes

Polymers, 2022
The sorption–diffusion characteristics of rigid-chain glassy polymers based on polyheteroarylenes (PHAs) have been studied in a wide interval of relative humidity and temperatures of thermal treatment of the polymer sorbents. Experimental data on water vapor sorption for polynaphthoyleneimidobenzimidazole (PNIB) and its copolymers with different ...
Anatoly E. Chalykh, Tatiana F. Petrova, Igor I. Ponomarev   +2 more
openaire   +2 more sources

The physico-chemical properties of ті-containing stainless steel composites and its photoactivity

Хімія, фізика та технологія поверхні, 2019
The present study aims to obtain the supported Ti-containing catalyst on a surface of stainless steel foil by low temperature ionic implantation method.
O. V. Sanzhak, D. V. Brazhnyk, V. V. Honcharov, V. A. Zazhigalov, F. A. Azimov   +4 more
doaj   +1 more source

One-pot synthesis of ?-valerolactone from tetrahydrofurfuryl alcohol and ?-valerolactone amidation over Сu/ZnO-Al₂O₃ catalyst

Хімія, фізика та технологія поверхні, 2016
It has been found that tetrahydrofurfuryl alcohol transforms into ?-valerolactone over Сu/ZnO-Al2O3 catalyst at 270–280°С. ?-Valerolactone can be used for obtaining biodegradable polyesters and copolymers.
V. V. Brei, A. M. Varvarin, S. V. Prudius   +2 more
doaj   +1 more source

On the Kinetic Mechanisms of the Reduction and Oxidation Reactions of Iron Oxide/Iron Pellets for a Hydrogen Storage Process

Energies, 2022
This work aims at investigating the kinetic mechanisms of the reduction/oxidation (redox) reactions of iron oxide/iron pellets under different operating conditions. The reaction principle is the basis of a thermochemical hydrogen storage system.
Bernd Gamisch, Lea Huber, Matthias Gaderer, Belal Dawoud   +3 more
doaj   +1 more source

Application of a compact sorption generator to solar refrigeration: case study of Dakar (Senegal) [PDF]

, 2011
The feasibility of applying a low cost plate heat exchanger solid sorption reactor to solar powered refrigeration is investigated by using a validated reactor model.
Tamainot-Telto, Zacharie, S.J. Metcalf, R.E. Critoph, Z. Tamainot-Telto, Critoph, Robert E., Metcalf, Steven J.   +5 more
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Synthesis and Study of the Structural, Optical and Photocatalytic Characteristics of V2O5/TiO2 Nanocomposites [PDF]

Журнал нано- та електронної фізики, 2016
Mesoporous V2O5/TiO2 nanocomposites were obtained by citrate method. The prepared materials were characterized by XRD, SEM, EDS, TEM, BET and UV-Vis spectroscopy.
Т.A. Khalyavka, S.V. Camyshan, N.N. Tsyba, S.N. Scherbakov   +3 more
doaj   +1 more source

Cooperativity in Sorption Isotherms

Langmuir, 2023
We present a general theory of cooperativity in sorption isotherms that can be applied to sorbent/gas and sorbent/solution isotherms and is valid even when sorbates dissolve into or penetrate the sorbent. Our universal foundation, based on the principles of statistical thermodynamics, is the excess number of sorbates (around a probe sorbate), which can
Seishi Shimizu, Nobuyuki Matubayasi
openaire   +3 more sources

Sorption and fractionation of dissolved organic matter and associated phosphorus in agricultural soil

, 2007
Molibility of dissolved organic matter (DOM) strongly affects the export of nitrogen (N) and phosphorus (P) from oils to surface waters. To study the sorption an mobility of dissolved organic C and P (DOC, DOP) in soil, the pH-dependent sorption of DOM ...
Hansen, H.C.B., Borggaard, Ole K., Styczen, M., Hansen, Søren, Hansen, S., Gjettermann, B., Borggaard, O.K., M. Styczen, Gjettermann, Birgitte, O. K. Borggaard, S. Hansen, B. Gjettermann, Hansen, Hans Christian Bruun, H. C. B. Hansen   +13 more
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