A5063433426- Analytical Chemistry and Chromatography
- Phase Equilibria and Thermodynamics
- Petroleum Processing and Analysis
- Adsorption, diffusion, and thermodynamic properties of materials
- Advanced Photocatalysis Techniques
- Chromatography in Natural Products
- Engine and Fuel Emissions
- Freezing and Crystallization Processes
- Protein purification and stability
- Biofuel production and bioconversion
- Ionic liquids properties and applications
- Minerals Flotation and Separation Techniques
- Ultrasound and Cavitation Phenomena
- Analytical chemistry methods development
- Mercury impact and mitigation studies
- Hydrocarbon exploration and reservoir analysis
- Odor and Emission Control Technologies
- Microbial Metabolic Engineering and Bioproduction
- Advanced oxidation water treatment
- Natural product bioactivities and synthesis
- Inorganic and Organometallic Chemistry
- Catalysis and Oxidation Reactions
- Process Optimization and Integration
- GABA and Rice Research
- Advanced Nanomaterials in Catalysis
Gdańsk University of Technology
2014-2024
The paper presents a new kind of stationary phase for gas chromatography based on deep eutectic solvents (DES) in the form mixture L-proline (protonated with hydrochloric acid) as hydrogen bond acceptor (HBA) and xylitol donor (HBD) molar ratio HBA:HBD 5:1. DES immobilized silanized chromatographic support was tested by (GC) order to determine its resolving power volatile organic compounds. Studies have demonstrated suitability this type GC. Rohrschneider-McReynolds constants were determined...
In the present study, extracts of Cytinus hypocistis (L.) L using both traditional solvents (hexane, ethyl acetate, dichloromethane, ethanol, ethanol/water, and water) natural deep eutectic (NADESs) were investigated in terms their total polyphenolic contents antioxidant enzyme-inhibitive properties. The found to possess phenolic flavonoid ranges 26.47-186.13 mg GAE/g 0.68-12.55 RE/g, respectively. Higher obtained for NADES extracts. Compositional differences reported relation potential...
Asphaltenes isolated from bitumen possess unusual adsorption characteristics that can be further enhanced by chemical modifications to promote interactions with VOCs'. Herein, nitrated asphaltenes are used as an active layer coated on a surface of diatomaceous earth, in order prepare efficient adsorbent (AsfNitro). Breakthrough experiments benzene, pyridine, and 1-nitropropane revealed significant increase capacity, after deposition asphaltenes, 26, 12, 8 times respectively. The capacity...
We present the results of investigations on possibility application asphaltene fraction isolated from oxidized residue vacuum distillation crude oil as a stationary phase for gas chromatography. The investigation revealed that phases can find use separation wide range volatile organic compounds. experimental values Rohrschneider/McReynolds constants characterize asphaltenes medium polarity and selectivity similar to commercially available based alkyl phthalates. Isolation material obtained...
Abstract The paper presents an innovative, chemically modified (methylcyanated) asphaltene-based adsorbent that can be interesting low-cost alternative for traditional adsorbents. Adsorption properties of adsorbents were examined by inverse gas chromatography technique, adsorption isotherms, and breakthrough curves. A significant increase in retention volume pyridine, 2-pentanone, nitropropane, toluene, 1-butanol was observed. Rohrschneider–McReynolds constants revealed strength interactions...
We present the results of investigations chromatographic (sorptive) properties silanized silica gel as a stationary phase for gas chromatography used simulated distillation. Commercially available sorbent (particle diameter range 63–200 μm, average pore size 60 Å) was sieved to obtain 80–100 mesh fraction (180–150 μm). The obtained revealed that allows complete separation mixture n- and iso-alkanes in C1–C7 range. Such is achieved with temperature program starting an initial 50˚C, which...
W pracy omowiono normowane metodyki wyznaczania rozkladu temperatury destylacji, metodą destylacji klasycznej oraz symulowanej(SIMDIS). Normy opisujące sposob prowadzenia symulowanej dla poszczegolnych materialow, zostaly porownane w zakresie wymagan odniesieniu do aparatury warunkow analizy konkretnego rodzaju materialu naftowego. Przedstawiono rowniez doniesienia naukowe dotyczące najnowszych osiągniec poprawy i modyfikacji SIMDIS.