Results 21 to 30 of about 377,659 (302)

Sorption kinetics for the removal of aldehydes from aqueous streams with extractant impregnated resins [PDF]

, 2008
The sorption kinetics for the removal aldehydes from aqueous solutions with Amberlite XAD-16 and MPP particles impregnated with Primene JM-T was investigated.
Babic, Katarina, Haan, Andre B. de, Ham, Louis G.J. van der   +2 more
core   +2 more sources

Synthesis of ТіО2- based photocatalysts deposited on stainless steel

Доповiдi Нацiональної академiї наук України, 2019
The supported Ti-containing catalyst on the surface of a stainless steel foil is prepared by the low-temperature ion implantation method. It shows the high photocatalytic activity in the process of neutralizing benzene in aqueous solutions under the ...
O.V. Sanzhak, D.V. Brazhnyk, V.V. Goncharov, V.O. Zazhigalov, F.A. Azimov   +4 more
doaj   +1 more source

Study of the physical-chemical and sorption properties of SnO₂ prepared by mechanochemical and microwave routes

Хімія, фізика та технологія поверхні, 2018
There are many methods for synthesis of tin dioxide SnO2, namely sol-gel, precipitation. However, these methods do not allow to regulate the physical-chemical properties in wide limits in the synthesis stage.
M. M. Samsonenko, O. I. Zakutevskyy, S. V. Khalameida, J. Skubiszewska-Zięba, M. F. Kovtun   +4 more
doaj   +1 more source

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

Determination of molybdenum oxidation state on the mechanochemically treated MoO₃

Хімія, фізика та технологія поверхні, 2015
The molybdenum oxidation degree in the MoO3 samples after mechanochemical treatment in various media (air, water, ethanol) has been studied by titration, EPR and XANES methods.
N. S. Kopachevska, A. K. Melnyk, I. V. Bacherikova, V. A. Zazhigalov, K. Wieczorek-Ciurowa   +4 more
doaj   +1 more source

Spatial moment analysis of transport of nonlinearly absorbing pesticides using analytical approximations [PDF]

, 2008
Analytical approximations were derived for solute transport of pesticides subject to Freundlich sorption, and first-order degradation restricted to the liquid phase.
Beltman, W.H.J., Boesten, J.J.T.I., Zee, S.E.A.T.M., van der   +2 more
core   +2 more sources

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

Neodymium recovery by chitosan/iron(III) hydroxide [ChiFer(III)] sorbent material: Batch and column systems [PDF]

, 2018
A low cost composite material was synthesized for neodymium recovery from dilute aqueous solutions. The in-situ production of the composite containing chitosan and iron(III) hydroxide (ChiFer(III)) was improved and the results were compared with raw ...
Demey Cedeño, Hary, Fortuny Sanromá, Agustín, Lapo, Byron, Marchand, Muriel, Ruiz Planas, Montserrat, Sastre Requena, Ana María   +5 more
core   +3 more sources

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

Phosphorus retention capacity in red ferralitic soil [PDF]

, 2014
In this study the main physical-chemical characteristics of red ferralitic soil to use as substrate in subsurface wetlands was determined. The P-removal was evaluated in a short-term isotherm batch experiment and in a column percolation experiment.
Bossens, J, Pérez, MM, Rosa, E, Tack, Filip   +3 more
core   +1 more source