A5039511603- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysis and Hydrodesulfurization Studies
- Advanced Photocatalysis Techniques
- Nanomaterials for catalytic reactions
- Copper-based nanomaterials and applications
- Catalysts for Methane Reforming
- Ammonia Synthesis and Nitrogen Reduction
- Laser-Ablation Synthesis of Nanoparticles
- Mesoporous Materials and Catalysis
- Crystallography and molecular interactions
- Thermal and Kinetic Analysis
- TiO2 Photocatalysis and Solar Cells
- Zeolite Catalysis and Synthesis
- Electrocatalysts for Energy Conversion
- Catalysis for Biomass Conversion
- Asymmetric Hydrogenation and Catalysis
- Laser-induced spectroscopy and plasma
- Diamond and Carbon-based Materials Research
- Advanced battery technologies research
- Advanced Physical and Chemical Molecular Interactions
- Radioactive element chemistry and processing
- Carbon dioxide utilization in catalysis
- Chemical and Physical Properties of Materials
- X-ray Diffraction in Crystallography
Leibniz Institute for Catalysis
2022-2025
Albert Einstein College of Medicine
2025
Boreskov Institute of Catalysis
2019-2023
Novosibirsk Tuberculosis Research Institute
2020
Novosibirsk State University
2020
Reducing the operating temperature of oxidation catalysts is important for designing energy efficient processes, extending catalyst lifetime, and abating pollutants, especially in cold climates. Herein, high CO activity at sub-ambient temperatures reported Pt/CeO2 with content Pt form dispersed Pt2+ Pt4+ centers. Whereas reference 1 wt%Pt was active only above 100ᵒC, 8 20 converted 60 90 % CO, respectively, below 0ᵒC. Ionic platinum shown to facilitate oxygen release from ceria lower...
Abstract Two series of Pt/γ‐Al 2 O 3 catalysts for low temperature NH oxidation were prepared using Pt(NO ) 4 and H PtCl 6 precursors. Using both precursors results in the formation small Pt particles (d<1.5 nm), however, Cl‐containing give a higher fraction highly dispersed species. Such species show high stability against thermal or treatment probably due to presence substantial amount chlorine on surface. Treatment samples from with leads metallic nanoparticles accompanied by...
Metal–organic frameworks (MOFs) possess unique flexibility of structure and properties, which drives them toward applications as water adsorbents in many emerging technologies, such adsorptive heat transformation, harvesting from the air, dehumidification, desalination. A deep understanding surface phenomena is a prerequisite for target-oriented design MOFs with required adsorption properties. In this work, we comprehensively study effect functional groups on series CAU-10-X substituted both...
The production of methanol (CH3OH) from CO2 is an attractive solution for closing the carbon cycle and thus addressing both environmental concerns raw material changes in chemical industry. CuZn-based catalysts are most intensively investigated materials this regard but suffer CH3OH decomposition to CO with increasing conversion. Pd-containing also show promising performance, they less understood a mechanistic point view. To bridge gap, series based on CeO2, ZrO2, Ce0.8Zr0.2O2, or CeO2–SiO2...
Abstract The fundamentals of in situ formation iron carbides are required for the tailored design Fe‐based catalysts efficient conversion CO 2 to higher hydrocarbons. Herein, time‐resolved X‐ray absorption spectroscopy has been used elucidate mechanism Fe 5 C from ferrous oxalate (FeC O 4 ) at 350 °C using a H /CO=3 reaction feed. Regardless kind alkali metal promoter and pressure (1 or 7.5 bar), FeC is first decomposed FeO followed by latter . Further insights into above transformations...
NAP-XPS and<italic>operando</italic>XAS study of Pt/TiO<sub>2</sub>catalysts shows that Pt<sup>0</sup>species stabilized on TiO<sub>2</sub>surface have the highest activity at low-temperature NH<sub>3</sub>oxidation.
Abstract Dependence of NH 3 oxidation on the state and dispersion Pt species in Pt/γ‐Al 2 O catalysts was investigated. Prereduced containing 0 nanoparticles exhibited significantly higher activity than preoxidized ones with same dispersion. The most significant improvement catalytic (TOF increased by 30 times) observed when size particles from ∼1 to ∼8 nm. N selectivity found be mainly determined reaction temperature, a minor influence particle size. Preoxidized ionic were activated medium,...
A set of physicochemical methods, including X-ray photoelectron spectroscopy (XPS), diraction, electron microscopy and absorption spectroscopy, was applied to study Pt/TiO2 catalysts prepared by impregnation using a commercial TiO2-P25 support produced pulsed laser ablation in liquid (PLA). The Pt/TiO2-PLA showed increased thermal stability due the localization highly dispersed platinum species at intercrystalline boundaries particles. In contrast, Pt/TiO2-P25 were characterized uniform...
In this work, the reaction properties of mixed silver-nickel oxide AgNiO2 were investigated in CO oxidation ranging from room temperature up to 350 °C. X-ray photoelectron spectroscopy revealed presence a single oxidized silver state and combination Ni2+ Ni3+ species on surface as-prepared oxide. It was established that able interact with at temperature. accompanied by simultaneous titration lattice (O2−-like) weakly charged (O−-like) oxygen species. The interaction below 100 °C resulted...
Emerging interest in the platinum group metal (PGM)-free electrocatalysts calls for a fundamental understanding of key factors determining their activity, latter being critical development efficient catalysts. Ni-based materials show high promises as PGM-free anodes anion exchange membrane fuel cells (AEMFCs). However, hydrogen oxidation reaction (HOR) activity can differ by several orders magnitude, and responsible this are still debated. In work, effect unintentional surface oxides Ni/C...
Abstract Die Ethylen‐Dimerisierung ist ein industrieller Prozess, der derzeit mit homogenen Katalysatoren durchgeführt wird. Hier stellen wir einen hochaktiven heterogenen Katalysator vor, winzige Mengen von atomar dispergiertem Pd enthält. Er erfordert keine Cokatalysatoren oder Aktivatoren und übertrifft die Leistung früherer Katalysatoren, unter ähnlichen Reaktionsbedingungen getestet wurden. Selektivität für C 4 ‐ 6 ‐Kohlenwasserstoffe betrug bei 200 °C etwa 80 % bzw. 10 42 2 H ‐Umsatz...
Abstract A detailed operando DRIFTS study on the CO 2 Fischer‐Tropsch reaction with K‐promoted Fe/YZrO x catalysts was performed to investigate influence of this modification catalytic performance in formation lower olefins as well higher hydrocarbons and gain insights into mechanistic aspects. Catalytic testing revealed an enhanced by adding potassium catalysts, while spectroscopic studies various stable adsorbates intermediates such monodentate carbonates, bicarbonates, formates, formyl,...
Abstract Ethylene dimerization is an industrial process that currently carried out using homogeneous catalysts. Here we present a highly active heterogeneous catalyst containing minute amounts of atomically dispersed Pd. It requires no co‐catalyst(s) or activator(s) and significantly outperforms previously reported catalysts tested under similar reaction conditions. The selectivity to C 4 ‐ 6 ‐hydrocarbons was about 80 % 10 at 42 ethylene conversion 200 °C industrially relevant feed 50 vol...
A mixed oxide of silver and nickel AgNiO2 was obtained via co-precipitation in alkaline medium. This demonstrates room temperature activity the reaction ethylene epoxidation with a high selectivity (up to 70%). Using PDF method, it found that initial structure contains stacking faults vacancies, which cause nonstoichiometry (Ag/Ni < 1). It has been established on surface oxide, state can be considered as an intermediate between Ag2O Ag0 (i.e. Agδ+-like), while is characterized by signs...
Abstract Ternary oxide of silver, copper, and manganese (Ag 2 CuMnO 4 ) was prepared by hydrothermal synthesis in an alkaline solution. The sample characterized a delafossite crystal structure without any other crystallized phases. catalytic properties Ag oxidation reactions using molecular oxygen were investigated. High activity found for the CO at room temperature, while ammonia occurred above 100 °C. Ammonia resulted formation N O/N or NO/NO products depending on reaction temperature. As...
We established the structural features of Rh single atom and RhO x clusters in CeO 2 , their Red-Ox reversibility low temperature CO oxidation activity.
We report the crystal structure and crystallization conditions of a first hydrated form metacetamol (a hemihydrate), C 8 H 9 NO 2 ·0.5H O. It crystallizes from metacetamol-saturated 1:1 ( v / ) water–ethanol solutions in monoclinic (space group P 1 n contains eight four water molecules per unit cell. The conformations are same as polymorph II metacetamol, which ensures formation hydrogen-bonded dimers R (16) ring motifs its similar to those II. Unlike II, however, these hemihydrate connected...