Results 21 to 30 of about 61,587 (258)

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

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

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

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

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

Photocatalytic activity of spectro-pure titanium dioxide: Effects of crystalline structure, specific surface area and sorption properties

International Journal of Photoenergy, 2003
Dispersed optically pure anatase, rutile and two-phase samples of titanium dioxide were prepared using a sol-gel technique. In particle of two-phase samples, the anatase nuclei are surrounded by a rutile envelope.
Evgeny I. Kapinus, Tatyana A. Khalyavka, Valentina V. Shimanovskaya, Tatyana I. Viktorova, Vladimir V. Strelko   +4 more
doaj   +1 more source

Mechanisms of Oxidative Stress an d Vessels Sclerotic Transformation Initiated by Uremic Toxin Indoxyl Sulfate

Eurasian Chemico-Technological Journal, 2016
The microspherical carbonaceous adsorbents SCN and AST-120 for oral use prevent chronic disease progression, delay dialysis initiation, lessen atherosclerosis development in kidney and decreased of overall and cardiovascular mortality.
V. Strelko, Yu. Gorlov
doaj   +1 more source

Peculiarities of Thermodynamic Behaviors of Xenon Adsorption on the Activated Carbon Prepared from Silicon Carbide

Nanomaterials, 2021
An activated carbon prepared from silicon carbide by thermochemical synthesis and designated as SiC-AC was studied as an adsorbent for xenon. The examination of textural properties of the SiC-AC adsorbent by nitrogen vapor adsorption measurements at 77 K,
Ilya Men’shchikov, Andrey Shkolin, Elena Khozina, Anatoly Fomkin   +3 more
doaj   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Preparation and characterization of titanium dioxide modified with carbon with enhanced photocatalytic activity

Хімія, фізика та технологія поверхні, 2016
The aim of our work was to prepare nanoscale composites based on TiO2 and carbon photocatalytically active under UV and visible irradiation in the destruction of safranin T. The samples were characterized by XRD, BET, SEM, UV-Vis and IR spectroscopy.
M. V. Bondarenko, T. A. Khalyavka, S. V. Camyshan, I. S. Petrik   +3 more
doaj   +1 more source