A5000150266- Catalysis for Biomass Conversion
- Catalysis and Hydrodesulfurization Studies
- Zeolite Catalysis and Synthesis
- Thermochemical Biomass Conversion Processes
- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Biofuel production and bioconversion
- Catalysts for Methane Reforming
- Lignin and Wood Chemistry
- Mesoporous Materials and Catalysis
- Metal Extraction and Bioleaching
- Thermal and Kinetic Analysis
- Extraction and Separation Processes
- Iron and Steelmaking Processes
- Supercapacitor Materials and Fabrication
- Radioactive element chemistry and processing
- Microbial Metabolic Engineering and Bioproduction
- Minerals Flotation and Separation Techniques
- Food composition and properties
- CO2 Reduction Techniques and Catalysts
- Pigment Synthesis and Properties
- Food Drying and Modeling
- Carbon dioxide utilization in catalysis
- Polysaccharides Composition and Applications
- Calcium Carbonate Crystallization and Inhibition
National Institute of Chemistry
2018-2024
Ukrainian State University of Chemical Technology
2019
University of the Western Cape
2016
The tetralin hydrocracking process into benzene, toluene, and xylenes (BTX) was investigated over metal-modified (Ga, Nb, Ni, NiMo, Sn, W, Zr or H3[P(W3O10)4])/ZSM-5 zeolite catalysts without sulfidation procedures, mechanism analyzed, compared with a pristine microporous material in packed bed reactor under applied atmospheric pressure (p). This experimental study presents an investigation of the metal-promoted ZSM-5 for BTX production ambient p first continuously-operated time. It is...
Creating a sustainable society hinges on efficient chemical and fuel production from renewable cellulosic biomass, necessitating the development of innovative transformation routes cellulose. In this investigation, we unveil pioneering chemocatalytic method, utilizing an H-ZSM-5 catalyst within batch reactor under nitrogen atmosphere, for simultaneous one-pot generation levulinic acid (LA) and/or ethanol during wet torrefaction (WT) wood cellulose pulp residue (WCPR), yielding high-quality...
Wet torrefaction (WT) offers distinct advantages over other pretreatment methods for producing hydrochar, making it also a promising technology converting biomass waste into value-added platform chemicals. In this research, we conducted comprehensive investigation the influence of reaction conditions on WT process, evaluating its effects surface morphology and elemental composition resulting as well formation liquid products, such 5-hydroxymethylfurfural (5-HMF). During course our study,...
Wet torrefaction (WT) is an effective pretreatment method of biomass waste for producing high-quality hydrochar and valuable liquid products. This study delves into how acid catalysts reaction conditions in WT impact the resulting hydrochar's surface characteristics elemental composition, as well distribution The focus on utilizing wood cellulose pulp residue (WCPR) feedstock with H-Beta zeolite catalyst a nitrogen-rich environment. process involves temperature range 180–260 °C, durations...
The gasification of biomass is one the most prominent technologies for conversion raw material feedstock to polymers, useful chemical substances, and energy. main engineering challenge during processing wastes presence tars in gaseous reaction products, which could make this operation methodology unsuccessfully due blockage separating particle filters, fuel line flow, substantial transfer losses. Catalytic hydrocarbon cracking appears be a promising developing approach their optimal removal....
The promotional effect of Fe-Mo species introduced into HZSM-5 (Zeolyst Int., SiO2/Al2O3 ≈ 30) zeolite catalyst by the wetness impregnation method for 1-hexene aromatization was investigated. structure and catalytic performance over xFeyMo-ZSM-5 catalysts in comparison with unmodified were studied. contain fixed loading (5 wt%) variable Fe/Mo ratio. characterized BET, ICP-AES, HRSEM-EDS, HRTEM, XRD, FTIR, H2-TPR, NH3-TPD, pyridine DRIFT spectroscopy. characterization data confirmed existence...
Wet torrefaction (WT) is an effective pretreatment method of biomass waste for producing hydrochar and valuable liquid products. In this study, a groundbreaking chemocatalytic approach introduced, employing various zeolite catalysts (H-ZSM-5, H-Beta, H-Y, H-USY, H-Mordenite) in batch reactor under nitrogen atmosphere. This enables the simultaneous one-pot production levulinic acid (LA) and/or bio-ethanol during WT process wood cellulose pulp residue (WCPR), ultimately yielding high-quality...
Studies on chemical precipitation of the calcium orthophosphates have shown that their phase compositions do not vary depending molar ratio Ca/P but are sensitive to solutions acidity and temperature. These two key factors determine transformation progress metastable phases into less soluble precipitates phosphates. It was proposed compare solubility products with cations quantities in formulas. found there a linear correlation between specific ratios if hydroxyapatite its Ca-deficient forms...
A high abundance of methane and its relatively low price make it an attractive raw feedstock for the production ethylene, which is in consumer demand recent years. Direct catalytic nonoxidative conversion interesting, because could be utilized on natural gas well sites. Monometallic bimetallic Fe Mo catalysts were prepared purpose coupling to ethane ethene. Three supported materials synthesized with following loading metal: 2.5-wt% Fe, 5.0-wt% HZSM-5. Process' chemical reactions also...
High selective conversion of glycerol into ethanol was achieved in a gas-phase packed-bed reactor over hierarchical alkali-treated zeolite catalyst materials.
Rutile decomposition by sulfuric acid, including the formation of two salts, Ti(SO4)2/TiOSO4, is thermodynamically modelled. It shown that TiO2 can spontaneously dissolve in H2SO4 solutions. However, titania considered as an inert (ballast) phase component titanium-containing raw materials due to decelerated separate nature such chemical transformations. concluded hampered related kinetics dissolution be attributed lability Ti(IV) cations/the specific engineered features hierarchical...
The study examines Ni/ZSM-5 catalysts in vapor phase hydrogenation of levulinic acid (LA) under continuous flow conditions (ambient pressure, 210–250 °C). Advanced characterization revealed the interplay between Al and Ni. This was further reinforced by new approach microkinetic modeling, which demonstrates a pioneering work on mathematical description pulse H2 sorption, TPD kinetics, DRIFT-supported determination sorption energy barriers (de)sorption kinetics. (3.7 wt.% Ni, Si/Al = 28)...