A5021822149- Catalysis and Hydrodesulfurization Studies
- Nanomaterials for catalytic reactions
- Catalysis for Biomass Conversion
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Biosimilars and Bioanalytical Methods
- Magnetic Properties and Synthesis of Ferrites
- Polymer crystallization and properties
- Tea Polyphenols and Effects
- biodegradable polymer synthesis and properties
- Electrodeposition and Electroless Coatings
- Nanoparticle-Based Drug Delivery
- Food Quality and Safety Studies
- Microbial Metabolic Engineering and Bioproduction
- Chemical Synthesis and Reactions
- Polymer Nanocomposites and Properties
- Polyoxometalates: Synthesis and Applications
- Microplastics and Plastic Pollution
- Phase Equilibria and Thermodynamics
- Nanocomposite Films for Food Packaging
- Enzyme Catalysis and Immobilization
- Phytochemicals and Antioxidant Activities
- Polymer Science and PVC
- Zeolite Catalysis and Synthesis
- Advanced Control Systems Optimization
Universitatea Națională de Știință și Tehnologie Politehnica București
2021-2023
Societate Comerciala Pentru Cercetare, Proiectare si Productie de Echipamente si Instalatii de Automatizare (Romania)
2020
Babeș-Bolyai University
2009-2016
Gheorghe Asachi Technical University of Iași
2009
Tungstophosphoric acid (H3PW12O40) supported on silica-coated magnetite nanoparticles has been prepared and used as a heterogeneous catalyst (Fe3O4@SiO2@HPW) in the condensation of benzaldehyde (B) with glycerol (Gly) for production cyclic acetals. Physicochemical techniques, including scanning electron microscopy (SEM), transmission (TEM), Fourier-transform infrared spectrometry (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), N2 physisorption were to characterize...
The present paper deals with a comparative study on the influence of two different bioplasticizers: acetyl tributylcitrate (ATBC) and LAPOL108 mechanical antimicrobial properties poly(lactic acid) PLA containing 1 wt.% chitosan. based biocomposites were investigated by means processing behavior, FT-IR spectroscopy, DSC analysis, tensile barrier properties, migration in food simulants antifungal activity. Based obtained results it can appreciated that could be appropriate for designing...
Nowadays, the polyolefins (polyethylene, polypropylene) are increasingly consumed in large amounts for many applications.This issue causes a concern regarding environmental impact of waste materials generated after first use.Mechanical recycling polyolefin wastes helps to conserve oil and gas resources reduce polymeric accumulation environment.In this paper, modification some post-consumer polypropylene (rPP) properties coming from packaging processing is investigated by use...
Hydrodesulphurization of dimethyldisulphide was performed on Ni-Co-Mo /�-Al2O3 catalyst. The catalyst characterized by determining the adsorption isotherms, pore size distribution and acid strength. Experiments were carried out a laboratory echipament in continuous system using fixed bed catalytic reactor at 50-100�C, pressure from 10 barr to 50 barr, liquid hourly space velocity 1h-1 4h-1 molar ratio H2 / 60/1. A simplified kinetic model based Langmuir�Hinshelwood theory, for...
Abstract The hydrodesulphurization of a model component and equimolar ternary mixture thiophene, 2-ethylthiophene benzothiophene over sulphided CoMo/γ-Al 2 O 3 -Nb 5 catalysts were investigated in fixed bed flow reactor. prepared by incipient wetness impregnation method characterized textural characteristics, total acidity chemical species present on the surface. characterization results showed that both exhibit mesoporous structure with cylindrical pores open at ends, evidenced IV type...
A simple method to synthesize copper, nickel and Cu-Ni nanotubes in alumina membrane by direct electrochemical deposition technique is presented.This work divided into three main parts: elaboration of the nanostructured metals supported on Cu Ni electroconductive support; SEM -EDX characterization nanodeposits; electrodes; nanostructures were obtained through an (AAO) that later dissolved.The diameter nanorods deposited foil about 40-150 nanometres, which good agreement with AAO pore size...
Abstract The rhenium effect on the performance of CoMoNi/γ‐Al 2 O 3 catalyst was studied in thiophene hydrodesulphurization. unsulfided and freshly sulfided catalysts were characterized by N adsorption‐desorption, IR spectroscopy, X‐ray photoelectron spectroscopy (XPS) total acidity. effects reaction temperature, pressure, liquid hourly space velocity (LHSV) HDS shown that activity CoMoNiRe/γ‐Al for superior to catalyst, which mainly ascribed higher acidic functional groups. Based...
We present the studies carried out on transport properties of some membranes obtained from synthetic polymers: polyurethane and ethylene-vinyl acetate copolymer, for use in development transdermal therapeutic systems with limiting speed. The drug active substances through were highlighted by performing a diffusion cell. Experimental paracetamol tetracycline. experimental data was processed using general mathematical model release non-porous, non-swellable devices, which starts Fick�s second...
The hydrodesulphurization (HDS) of thiophene was performed on monometallic catalysts Co/g -Al2O3, Mo/g -Al2O3 and bimetallic CoMo/g -Al2O3. Experiments were carried out a fixed bed catalytic reactor at 175-300�C, 30-60 atm, volume hourly space velocities 1h-1- 4h-1 molar ratio hydrogen/thiophene 60/1. conversion the catalyst higher than or
For the acetalization reaction between glycerol and formaldehyde two mesoporous catalyst were prepared, characterized tested. Mesoporous silicas (MCM-41 HMS) synthesized used as supports for phosphotungstic acid based catalysts. Glycerol was converted to formal through a solventless with catalyzed by tungstophosphorous supported on type of silica (30PW/MCM41 30PW/HMS). The carried out in batch reactor, at 120�C, using 2% catalyst. highest yield ] 98.5% achieved over 30PW/HMS Catalyst...
Wine production is accompanied with the generation of tremendous amounts valuable by-products rich in phenolic bioactive compounds. The valorization these represents a key point winery, not only because health related benefits but also for environmental, by means reuse wastes. This paper describes study on grape marc processing, by-product winery and its to high added value product: resveratrol concentrated extract. most efficient method extracting from skin comprises following steps:...