A5072228997- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- Zeolite Catalysis and Synthesis
- Mesoporous Materials and Catalysis
- Catalysis and Oxidation Reactions
- Chemical Synthesis and Reactions
- Inorganic and Organometallic Chemistry
- Advanced oxidation water treatment
- Environmental remediation with nanomaterials
- Catalysis and Hydrodesulfurization Studies
- Pharmaceutical and Antibiotic Environmental Impacts
- Advanced Photocatalysis Techniques
- Sustainable Supply Chain Management
- Chemical Synthesis and Characterization
- Economic Zones and Regional Development
- Layered Double Hydroxides Synthesis and Applications
- Economic and Technological Innovation
- Chemical Looping and Thermochemical Processes
- Catalysis for Biomass Conversion
- Metal-Organic Frameworks: Synthesis and Applications
Universidad de Antioquia
2018-2025
Royal Society of Chemistry
2024
Centre National pour la Recherche Scientifique et Technique (CNRST)
2024
In this work, Ni-based mixed metal oxide (MMOs) materials were synthesized by coprecipitation, and then ceria (CeO2) was incorporated. The obtained structures characterized XRD, TEM, BET, H2-TPR, CO2-TPD techniques. evaluated in the CO2 methanation process (250–400 °C range). Firstly, effects of space velocity Ni loading on catalyst tested, 36000 h−1 5 % found to be suitable conditions for conversion. addition Co or Fe MMO assessed. improved catalytic activity, meanwhile, did not have an...
The desilication-dealumination process allowed the production of structurally more stable submicrometric Y zeolites with hierarchical porosity and high crystallinity.
Abstract Zeolites are typically used as adsorbents for the removal of organic pollutants from water but recently gaining attention catalysts activation persulfates toward contaminants degradation. In this work, capability a zeolite Y (FAU-type) and two zeolites beta (BEA-type) to activate peroxymonosulfate (PMS) degradation one representative pollutant pharmaceutical nature (i.e., ciprofloxacin) was tested compared. Initially, characterization considered carried out, evidencing that they had...
A chromate of copper and cobalt (Φy) was synthesized characterized. Φy activated peroxymonosulfate (PMS) to degrade ciprofloxacin (CIP) in water. The Φy/PMS combination showed a high degrading capability toward CIP (~100% elimination 15 min). However, leached (1.6 mg L-1), limiting its use for water treatment. To avoid leaching, calcinated, forming mixed metal oxide (MMO). In the MMO/PMS, no metals leached, adsorption low (<20%), action SO4•- dominated, leading synergistic effect on...
Catalysts based on dealuminated nanosized Y zeolites with a larger size and lanthanide zeolite smaller yielded more middle distillates.
Crystallinity damage in acid Y zeolite affects the direct relationship between number of sites or conversion 2-propanol and size selectivity 2-propene nanosized zeolite.
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The dependence of the mesoporous structure (mp) on catalytic performance Ni/CeO2-mp and Ni/CeO2-La2O3-mp was evaluated for high-quality materials prepared from an SBA-15 template. samples were characterized by different analytical techniques followed evaluation in a fixed bed reactor (GHSV 36,000 h-1). From these results, ceria-mesoporous (CeO2-mp) showed highly ordered pore system with assemblies slit-shaped mesopores, moderate improvement CO2 conversion to CH4 due presence basic sites...
In this work, ceria (CeO2) is incorporated into Ni-based mixed metal oxides (MMOs) obtained from hydrotalcites which are then put through the CO2 methanation process (250-400°C range). materials were synthesized by coprecipitation, and was them using reconstruction method. The structures confirmed XRD, TEM, BET, H2-TPR, CO2-TPD analyses. Firstly, effects of space velocity Ni load on catalyst tested. 36000 h-1 5% found to be suitable conditions for conversion. Adding Co or Fe MMO evaluated....
The methanation reaction is widely recognized as having significant implications for carbon dioxide capture. In this context, the development of affordable and efficient catalysts highly desirable. Furthermore, understanding surface behavior influence specific modifications on their reactivity great interest. Thus, study focuses investigating effect Ni/CeO2 mesoporous structure redox properties Ni0 Ni2+-CeO2 interfacial sites. This because they are responsible presence reducible species...
Nuevos complejos de titanio fórmula general Ti(OAr)4•HOR con diferente grupo sustractor (Cl,CN, NO2), se sintetizaron por el método intercambio alcohol-fenol y caracterizaron resonancia magnética nuclear (1H NMR) que dio evidencia la formación estructuras diméricas centros Ti coordinado octaédricamente; análisis termogravimétrico (TGA) registró pérdida volátiles permitió ajustar peso molecular experimental cada pre-catalizador. Mediante químico absorción atómica determinó porcentaje...