Results 1 to 10 of about 684,308 (265)

Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts

Nanomaterials, 2022
Two series of Ni/Ce(Ti/Nb)ZrO2 catalysts were prepared using citrate route and original solvothermal continuous flow synthesis in supercritical isopropanol and studied in dry reforming of methane (DRM). TEM, XPS and FTIRS of adsorbed CO confirm influence
Ekaterina Smal, Yulia Bespalko, Marina Arapova, Valeria Fedorova, Konstantin Valeev, Nikita Eremeev, Ekaterina Sadovskaya, Tamara Krieger, Tatiana Glazneva, Vladislav Sadykov, Mikhail Simonov   +10 more
doaj   +1 more source

Kinetic Regularities of Methane Dry Reforming Reaction on Nickel-Containing Modified Ceria–Zirconia

Energies, 2021
The Ni-containing catalysts based on ceria–zirconia doped with Ti and Ti+Nb were prepared by the solvothermal method in supercritical fluids. Ni deposition was carried out by incipient wetness impregnation and the one-pot technique.
Valeria Fedorova, Mikhail Simonov, Konstantin Valeev, Yuliya Bespalko, Ekaterina Smal, Nikita Eremeev, Ekaterina Sadovskaya, Tamara Krieger, Arcady Ishchenko, Vladislav Sadykov   +9 more
doaj   +1 more source

Hydrogenation of different carbon substrates into light hydrocarbons by ball milling

Nature Communications, 2023
The conversion of carbon-based solids, like non-recyclable plastics, biomass, and coal, into small molecules appears attractive from different points of view. However, the strong carbon–carbon bonds in these substances pose a severe obstacle, and thus—if
Linfeng Li, Olena Vozniuk, Zhengwen Cao, Pit Losch, Michael Felderhoff, Ferdi Schüth   +5 more
doaj   +1 more source

Modern Trends in Design of Catalysts for Transformation of Biofuels into Syngas and Hydrogen: From Fundamental Bases to Performance in Real Feeds

Energies, 2021
This review considers problems related to design of efficient structured catalysts for natural gas and biofuels transformation into syngas. Their active components are comprised of fluorite, perovskite and spinel oxides or their nanocomposites (both bulk
Vladislav Sadykov, Mikhail Simonov, Nikita Eremeev, Natalia Mezentseva   +3 more
doaj   +1 more source

A Dual-Band Dual-Polarized Base Station Antenna Array With Isolation Enhancement

IEEE Open Journal of Antennas and Propagation, 2023
In this paper, a dual-band dual-polarized antenna with isolation enhancement is designed. The proposed antenna operates in the frequency range of 3.4–3.6 GHz and 4.8-5 GHz, where the center frequency of the high band (HB) is 1.4 times that of the ...
Lei Ge, Yinhui Wang, Mingye Du, Weiyang Liu, Yue Zhao   +4 more
doaj   +1 more source

Novel Ni/Ce(Ti)ZrO₂ Catalysts for Methane Dry Reforming Prepared in Supercritical Alcohol Media

Energies, 2020
To achieve a high activity and coking stability of nickel catalysts in dry reforming of methane, materials comprised of ceria–zirconia doped by Ti were investigated as supports.
Yuliya Bespalko, Ekaterina Smal, Mikhail Simonov, Konstantin Valeev, Valeria Fedorova, Tamara Krieger, Svetlana Cherepanova, Arcady Ishchenko, Vladimir Rogov, Vladislav Sadykov   +9 more
doaj   +1 more source

High-Performance Metamaterial Light Absorption from Visible to Near-Infrared Assisted by Anti-Reflection Coating

Photonics, 2023
This study experimentally demonstrates two types of ultra-broadband metamaterial absorbers with high performance in the visible-to-near-infrared range by using different anti-reflection coatings (i.e., SiO2 and Si3N4) and a multi-subcell Ti-SiO2-Ti ...
Dongqing Wu, Lei Lei, Meiting Xie, Ping Xu, Shixiang Xu   +4 more
doaj   +1 more source

A 3-to-5 V Input, 80 Peak-to-Peak Voltage (Vpp) Output, 2.75% Total Harmonic Distortion Plus Noise (THD+N), 2.9 μF Load Piezoelectric Actuator Driver with Four-Switch Buck–Boost

Actuators, 2023
As human–computer interaction has become increasingly popular, haptic technology has become a research topic of great interest, since vibration perception, as a type of haptic feedback, can enhance user experience during an interaction. However, the high
Rui Ye, Junbiao Chen, Shuxiang Dong, Bing Li   +3 more
doaj   +1 more source

Methane Dry Reforming Catalysts Based on Pr-Doped Ceria–Zirconia Synthesized in Supercritical Propanol

Energies, 2023
This paper is devoted to the study of active and stable nickel catalysts for methane dry reforming based on Pr-doped ceria–zirconia obtained via the solvothermal continuous method.
Marina Arapova, Ekaterina Smal, Yuliya Bespalko, Konstantin Valeev, Valeria Fedorova, Amir Hassan, Olga Bulavchenko, Vladislav Sadykov, Mikhail Simonov   +8 more
doaj   +1 more source

Dynamical and topological properties of the spin angular momenta in general electromagnetic fields

Communications Physics, 2023
Spin angular momenta play important roles in light–matter interactions, leading to the emergence of the spin Hall effect and topological quasiparticles in modern optics.
Peng Shi, Luping Du, Aiping Yang, Xiaojin Yin, Xinrui Lei, Xiaocong Yuan   +5 more
doaj   +1 more source