A5048954668- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- X-ray Diffraction in Crystallography
- Magnetic and transport properties of perovskites and related materials
- Advancements in Solid Oxide Fuel Cells
- Advanced ceramic materials synthesis
- Pigment Synthesis and Properties
- Catalysts for Methane Reforming
- Electronic and Structural Properties of Oxides
- Catalysis and Hydrodesulfurization Studies
- Thermal and Kinetic Analysis
- Mesoporous Materials and Catalysis
- Chemical Synthesis and Characterization
- Zeolite Catalysis and Synthesis
- Advanced Condensed Matter Physics
- Polyoxometalates: Synthesis and Applications
- Advanced materials and composites
- Material Properties and Applications
- Iron oxide chemistry and applications
- Crystal Structures and Properties
- Nuclear materials and radiation effects
- Advanced Photocatalysis Techniques
- Microwave Dielectric Ceramics Synthesis
- Layered Double Hydroxides Synthesis and Applications
- nanoparticles nucleation surface interactions
Boreskov Institute of Catalysis
2015-2024
Novosibirsk State University
2015-2024
Siberian Branch of the Russian Academy of Sciences
2000-2022
Novosibirsk Tuberculosis Research Institute
2018
Russian Academy of Sciences
2005-2015
ORCID
2012
Institute of the Earth’s Crust
2010
Nagoya Institute of Technology
2008
Hitachi (Japan)
2008
University of the Witwatersrand
2006
A series of mixed Mn-Zr oxides with different molar ratios Mn/Zr (0.1-9) have been prepared by coprecipitation manganese and zirconium nitrates characterized X-ray diffraction (XRD) BET methods. It has found that at concentrations Mn below 30 at%, the samples are single-phase solid solutions (MnxZr1-xO2-δ) based on a ZrO2 structure. photoelectron spectroscopy (XPS) measurements showed in these exists mainly Mn(4+) state surface. An increase content mostly leads to an number cations structure...
The effect of nanoparticle size and structure on XRD SAXS patterns was investigated using modeling with the Debye scattering equation for a series nanoparticles (NP) positions atoms kept according to bulk lattice after relaxation. purpose research determine if changes in peak NP are entirely due well-known effects parameter change or additional can arise from itself. It found that very small NPs sizes below 5 nm, itself influences patterns. This be caused by interference fringes is not taken...
This paper reports synchrotron X-ray powder diffraction and high-resolution electron microscopy studies of the structural arrangement in γ-Fe2O3. Powder data as well show that basic structure γ-ferric oxide possesses cubic symmetry (space group P4332), whereas ordered distribution cation vacancies on octahedral positions results formation tetragonal superlattice P41212). The character superstructure orientation with respect to developed planes γ-Fe2O3 microcrystals obtained by different...
Low-temperature $\ensuremath{\gamma}$-, $\ensuremath{\eta}$-, and $\ensuremath{\chi}\text{\ensuremath{-}}{\mathrm{Al}}_{2}{\mathrm{O}}_{3}$ polymorphs were studied by high resolution transmission electron microscopy x-ray powder diffraction along with computer simulation of the patterns. Planar defects lying on {111}, {110}, {100} planes, which are origin broadening peaks in different forms aluminium oxide, revealed. In addition to providing strong experimental support for imperfect...
Despite the fact that metastable aluminum oxides are actively used in industry, there is a discrepancy literature regarding their crystal structure. All this leads to difficulties data interpretation and, as consequence, classification problems. This work aimed at solving these tasks. The main features of powder X-ray diffraction typical samples three Al2O3 polymorphs (γ-, χ-, η-) analyzed. Specifics and fundamental differences scattering relationship with structural organization...
Series of Al-, Ga-, and Zr,Al-pillared clays (Al-MM, Ga-MM, Zr,Al-MM) were prepared through the intercalation Zr-polyoxocations into three layered aluminosilicates with various textural properties chemical compositions. Zr,Al-phases structure bayerite–boehmite also synthesized using Al Zr oligomeric solutions, from aluminum chloride zirconium oxychloride, respectively, as metal sources, Zr/Al ratios 0–0.143. All materials characterized by X-ray diffraction; elemental analysis; DR-UV–vis,...
The hydrogen reduction of Mn<sub>1.7</sub>Ga<sub>1.3</sub>O<sub>4+δ</sub> proceeds in two steps. In the first step, excess oxygen is removed, → Mn<sub>1.7</sub>Ga<sub>1.3</sub>O<sub>4</sub>. second Mn<sup>3+</sup> cations are reduced to Mn<sup>2+</sup> spinel structure and formation MnO, Mn<sub>1.7</sub>Ga<sub>1.3</sub>O<sub>4</sub> Mn<sub>2</sub>Ga<sub>1</sub>O<sub>4</sub> + MnO.
Software for the simulation of X-ray powder diffraction (XRPD) patterns ultrafine-grained materials with some kinds imperfections has been developed. These calculations are performed on base model one-dimensionally disordered (1D-disordered) crystal [1]. Such a can describe stacking faults (SF) and other planar defects (PD) also finite size coherently scattering domains. Simulated XRPD pattern is compared experimental one be fitted to it. Potentialities software illustrated by several examples.