A5035961087- Hydrogen Storage and Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Membrane Separation and Gas Transport
- High Entropy Alloys Studies
- Electrocatalysts for Energy Conversion
- Muon and positron interactions and applications
- High-Temperature Coating Behaviors
- Intermetallics and Advanced Alloy Properties
- Inorganic Chemistry and Materials
- Catalytic Processes in Materials Science
- Carbon dioxide utilization in catalysis
- Nuclear Materials and Properties
- Rare-earth and actinide compounds
- X-ray Diffraction in Crystallography
- Industrial Gas Emission Control
- Fuel Cells and Related Materials
- Inorganic Fluorides and Related Compounds
- nanoparticles nucleation surface interactions
- Crystallization and Solubility Studies
- Covalent Organic Framework Applications
- Zeolite Catalysis and Synthesis
- Magnetism in coordination complexes
- Tribology and Wear Analysis
- Phase-change materials and chalcogenides
- Metallurgical and Alloy Processes
Lomonosov Moscow State University
2015-2025
Moscow State University
2009-2020
The single-phase multi-principal-component CoFeMnTiVZr alloy was obtained by rapid solidification and examined a combination of electrochemical methods gas-solid reactions. X-ray diffraction high-resolution transmission electron microscopy analyses reveal hexagonal Laves-phase structure (type C14). Cyclic voltammetry impedance spectroscopy investigations in the hydrogen absorption/desorption region give insight into kinetics change desorption charge terms applied potential. thickness...
In this work, Ti 25 Zr Nb Hf and 20 Ta powders were obtained by the calciothermic reduction of oxide mixtures at 1200°C, structure hydrogen properties investigated. Tantalum has a negative effect, preventing formation homogeneous structure, while Ta-free alloy tends to form single BCC phase. The TiZrHfNb powder, with its exhibits faster absorption kinetics up 0.5 wt% H 2 higher capacity 1.93 (H/M = 1.98). Our results indicate that is crucial for enhanced sorption properties.
Sorption isotherms of methane in Zn(2)(bdc)(2)(dabco) are measured up to a pressure 35 bar the temperature range between 198-296 K. The sorption measurements at 296 K showed an uptake 137 cm(3) cm(-3) bar. enthalpy adsorption for estimated by virial equation is 13.6 kJ mol(-1) zero coverage. X-ray structure analysis methane-adsorbed synchrotron radiation 90 revealed that molecules occupy three independent sites (A, B, and C) with stoichiometry x 6.69 CH(4), which consistent results gas 198...
A series of chromium(III) terephthalates MIL-101 with different anion composition the porous matrix have been synthesized and characterized in adsorption reactions nitrogen, hydrogen, methane by volumetric calorimetric measurements at pressures up to 3.2 MPa. peculiar local maximum H2 heat concentrations 0.7–0.9 mmol/g corresponding filling nanosized supertetrahedra was found. It has shown that substitution fluorine anions Cl– strongly affected accessibility these micropores toward gas molecules.
Ultra-high-pressure hydrogen-storage performance (up to 1900 bar) was investigated for mesoporous chromium terephthalate MIL-101 and its inclusion compounds containing ionic clusters [Re(4)S(4)F(12)](4-) [SiW(11)O(39)](7-) within the porous framework. The maximum specific hydrogen uptake values (total) are 12.3 (at 81) 7.2 wt. % 293 K). Such unique measurement conditions allowed us identify density of absorbed directly from excess sorption isotherm curves. corresponding were found be almost...
The microcalorimetric hydrogen titration technique combined with conventional volumetric measurements has been used to reveal peculiarities of the hydrogenation single-phase TiZrVNbTa equiatomic high-entropy alloy. alloy produced in form microfibers by pendent drop melt extraction technique. Palladium coating fibers applied enable first at room temperature without additional activation. An analysis obtained data allows us evaluate dependence enthalpy on concentration Three ranges, presumably...
Pt-Catalyst plays a key role in hydrogen adsorption by Cu-BTC at high pressures.
In this work, composites based on a hydride-forming fiber of multi-principal-component (MPC) Ti20Zr20Nb20V20Hf20 alloy, carbosil, dicumylperoxide and nitrile butadiene rubber (NBR) matrix were obtained. The prepared in three-stage process including the mixing elastomeric compounds via mill low-temperature vulcanization by heat pressing. Using dynamical mechanical analysis (DMA) differential scanning calorimetry (DSC) effect metallic filler carbonization composite was studied. microstructure...