A5077864370- TiO2 Photocatalysis and Solar Cells
- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- Zeolite Catalysis and Synthesis
- Advanced Photocatalysis Techniques
- Biodiesel Production and Applications
- Catalysis and Oxidation Reactions
- Petroleum Processing and Analysis
- Metal-Organic Frameworks: Synthesis and Applications
- Mesoporous Materials and Catalysis
- Membrane Separation and Gas Transport
- Water Quality Monitoring and Analysis
- Microbial Metabolism and Applications
- Nanoparticles: synthesis and applications
- Ionic liquids properties and applications
- Carbon Dioxide Capture Technologies
- Hydrocarbon exploration and reservoir analysis
- Enzyme-mediated dye degradation
- Analytical Chemistry and Chromatography
- Catalysis for Biomass Conversion
- Phase Equilibria and Thermodynamics
- Enhanced Oil Recovery Techniques
- Microwave-Assisted Synthesis and Applications
- Metal-Catalyzed Oxygenation Mechanisms
- Advanced oxidation water treatment
Instituto de Tecnologia e Pesquisa
2013-2024
Universidade Tiradentes
2015-2024
Universidade Federal de Sergipe
2010
Universidade Regional Integrada do Alto Uruguai e das Missões
2005
Petrobras (Brazil)
2005
Centro Universitário da Cidade
2000
Abstract It is known that the world scenario one of constant search for sustainable technologies can reduce emission carbon dioxide (CO 2 ) in atmosphere. This because CO seen as main responsible increase generation greenhouse gases, which leads to global warming and climate change. The development efficient adsorbents capture a current challenge. MCM-41 SBA-15 were synthesized microwave reactor used this work. Microwave irradiation presents itself an easy synthesis strategy with less...
This research pioneers the application of microwave irradiation as an innovative strategy for one-pot synthesis and surfactant elimination (cetyltrimethylammonium bromide—CTAB) from MCM-41, introducing a rapid efficient methodology. MCM-41 silica is widely utilized in various applications due to its unique textural structural properties. Nonetheless, presence residual surfactants after poses challenge effective application. synthesis, conducted reactor at 60 °C, provided result within 0.5 1...
This work aims to evaluate the activity and stability of solid acid catalysts (niobium oxide sulfated zirconia) in methyl esterification oleic assisted by microwave heating, an alternative route base-catalyzed transesterification reaction using conventional heating. Both have yielded similar conversions (68% for Nb2O5 68.7% zirconia at 200 °C, t = 20 min, methanol-to-fatty molar ratio 10, 5% w/w catalyst), much higher than one obtained without catalyst (39.3%), besides a small deactivation...
The main objective of this work was to investigate the C18 fatty acids esterification under microwave irradiation. effects alcohol used (methanol or ethanol), temperature (150−225 °C), molar ratio alcohol/fatty acid (3.5−20), and total irradiation power on noncatalytic reaction conversion were evaluated. results showed up 60% in 60 min reaction. presented a pronounced effect conversion, following an exponential dependence. for distinct indicated that increase parameter lead decrease...
Antibiotic resistance challenges the treatment of bacterial biofilm-related infections, but use nanoparticles as a is promising strategy to overcome infections. This study applied nitrogen-doped titanium dioxide (N–TiO2) conjugated with folic acid (FA) on biofilm-forming resistant bacteria. The photocatalytic effect TiO2 (NPs) was studied under ultraviolet (UV), visible light, and dark conditions at 60, 120, 180 min against planktonic cells biofilms Staphylococcus aureus,...
REFINING OF PETROLEUM.Microwave irradiation offers a clean, inexpensive, and convenient method of heating, which is an alternative way introducing energy into chemical systems.In particular, applications microwave technology for petroleum processing have been developed in the last twenty years.The main objective this paper to review use as technique applied during refining primary fluids, presenting discussing successful tool emulsion separation catalytic reactions normally found at...
Titanium dioxide (TiO2) has attracted attention as a photosensitizer in the field of photodynamic therapy (PDT) due to its low toxicity and high photostability. In present work, nitrogen-doped TiO2 (N-TiO2) nanoparticles had their photokilling efficiency evaluated on murine melanoma cell line (B16-F10) fibroblasts (NIH 3T3). The N-TiO2 were prepared by modified hydrogen peroxide sol-gel process using triethylamine nitrogen precursor. XRD measurements showed that all samples consisted an...
Petroleum essentially consists of a mixture organic compounds, mainly containing carbon and hydrogen, and, in minor quantities, compounds with nitrogen, sulphur, oxygen. Some these such as naphthenic acids, can cause corrosion pipes equipment used processing plants. Considering that the methods separation or clean up target low concentrations complex matrix use large amounts solvents stationary phases, is necessary to study new methodologies consume smaller solvent phases identify acid...
Industry and academia have shown great interest in the synthesis of organic–inorganic hybrid material because modification inorganic supports with organic groups increases options for using these materials. Microwave irradiation as a heat source is an alternative tool compared conventional heating (oil bath or furnace) to reduce reaction times during Thus, purpose this work was synthesize material, more specifically silica nanoparticles modified 3-chloropropyl-trimethoxysilane, microwave...
Abstract This study explores photocatalytic conversion of CO 2 using TiO −Cu heterojunctions with different Cu contents and investigates influence reaction media on the process efficiency. The use KOH favored liquid products, especially ethanol. An analysis H production as main competitive was done. Sodium oxalate led to an increase in evolution by approximately 600 μmol g‐ 1 compared pure water, presence medium, but blank test (without ) indicates a lower yield (~136 g −1 ), which suggests...
The possibility of producing new compounds that combine organic and inorganic materials for improved properties has become increasingly attractive to material science research. synthesis organic-inorganic hybrid materials, such as silica modified with an ionic liquid, is emerging alternative, because the porous matrix already used in several chemical fields, liquids have advantageous characteristics compared other compounds. However, involves long reaction times high temperatures. To...