Results 21 to 30 of about 175,932 (291)

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

Novel compact sorption generators for car air conditioning [PDF]

, 2009
A prototype compact generator using the activated carbon-ammonia pair based on the plate heat exchanger concept has been designed and built at Warwick University. The novel generator has low thermal mass and good heat transfer.
Tamainot-Telto, Zacharie, S.J. Metcalf, R.E. Critoph, Z. Tamainot-Telto, Critoph, Robert E., Metcalf, Steven J.   +5 more
core   +1 more source

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

A two-dimensional mathematical model of non-linear dual-sorption [PDF]

, 2005
Background: Certain drugs, for example scopolamine and timolol, show non-linear kinetic behavior during permeation process. This non-linear kinetic behavior is due to two mechanisms; the first mechanism being a simple dissolution producing mobile and ...
George K, George, K, K George
core   +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

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

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

Phosphorus sorption, accumulation and leaching [PDF]

, 2003
Arable land is a major diffuse source of P loads to surface waters. The main processes for P losses from agricultural fields are erosion, surface runoff and subsurface leaching.
Börling, Katarina
core   +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.
Wim H. J. Beltman, Boesten, J.J.T.I., Sjoerd E. A. T. M. van der Zee, Beltman, W.H.J., Jos J. T. I. Boesten, Zee, S.E.A.T.M., van der   +5 more
core   +1 more source