A5001030235- Zeolite Catalysis and Synthesis
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- Catalysis for Biomass Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Catalysis and Oxidation Reactions
- Chemical Synthesis and Characterization
- Electrocatalysts for Energy Conversion
- Asymmetric Hydrogenation and Catalysis
- Supercapacitor Materials and Fabrication
- Adsorption and biosorption for pollutant removal
- Chemical Synthesis and Reactions
- Various Chemistry Research Topics
- Polyoxometalates: Synthesis and Applications
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Metal-Catalyzed Oxygenation Mechanisms
- Oxidative Organic Chemistry Reactions
- Pigment Synthesis and Properties
- Carbon dioxide utilization in catalysis
- Nanomaterials for catalytic reactions
- Cyclopropane Reaction Mechanisms
- Clay minerals and soil interactions
- Covalent Organic Framework Applications
Instituto Politécnico de Lisboa
2014-2025
University of Lisbon
2014-2025
Centro de Estudos e Pesquisas em Educação, Cultura e Ação Comunitária
2020
Instituto de Soldadura e Qualidade
2009
Catalytic oxidation is a key technology for the conversion of petroleum-based feedstocks into useful chemicals (e.g., adipic acid, caprolactam, glycols, acrylates, and vinyl acetate) since this chemical transformation always involved in synthesis processes. Millions tons these compounds are annually produced worldwide find applications all areas industries, ranging from pharmaceutical to large-scale commodities. The traditional industrial methods produce large amounts those involve...
Hierarchical ZSM5 and Y zeolites were prepared through a surfactant-mediated strategy with NH4OH changing the duration of treatment amount CTAB surfactant taking as reference multiples critical micellar concentration (CMC). The materials characterized using powder X-ray diffraction, N2 adsorption isotherms at −196 °C, SEM TEM microscopy. catalytic performance was evaluated in Friedel–Crafts acylation furan acetic anhydride 80 °C. alkaline had different effects on two zeolites. For ZSM5,...
In this study, an adsorption experiment is proposed using commercial activated carbon as adsorbent and a textile azo dye, Mordant Blue-9, adsorbate. The surface chemistry of the changed through simple oxidation treatment ionic strength dye solution also modified, simulating distinct conditions water hardness. purpose experimental work, directed to undergraduate (second-year) students allow them understand influence on interaction between molecule.
Textile dyes often prove resistant to conventional wastewater treatment processes because of their complex molecular structures. Advanced oxidation methods, such as the Fenton reaction, have thus been recognized a promising approach for environmental remediation by decomposing these pollutants. This work aimed study efficacy modified zeolites catalysts in reaction dye degradation, with particular emphasis on techniques modifying and incorporating iron. The zeolite ZSM-5 was selected parent...
Abstract The hydrotris (pyrazol‐1‐yl) methane iron (II) complex [FeCl 2 (Tpm)] [Tpm=HC(C 3 N H ) ] was successfully immobilized, by the incipient wetness impregnation method, in parent and hierarchical Y zeolite modified through surfactant mediated methodology using different bases (NH 4 OH, NaOH or TPAOH). catalytic performance recyclability of supported Fe evaluated oxidation cyclohexane with hydrogen peroxide to cyclohexanol cyclohexanone under mild conditions two distinct behaviors were...
Because of the global necessity to decrease CO2 emissions, biomass-based fuels have become an interesting option explore; although, bio-oils need be upgraded, for example, by catalytic hydrodeoxygenation (HDO), reduce oxygen content. This reaction generally requires bifunctional catalysts with both metal and acid sites. For that purpose, Pt-Al2O3 Ni-Al2O3 containing heteropolyacids (HPA) were prepared. HPAs added two different methods: impregnation a H3PW12O40 solution onto support physical...
A copper C2-symmetric bis(oxazoline), CuBox, was introduced in two forms of commercial Y zeolite: a sodium form (NaY) and an ultrastable (NaUSY). CuBox by first partially exchanging the cations both zeolites for then refluxing obtained materials with solution bis(oxazoline) (Box). Two different loadings were prepared each zeolite. The characterized ICP-AES, elemental analysis, XPS, FTIR, TG, nitrogen adsorption isotherms at −196 °C. Evidence Box ligand location supercages NaY NaUSY its...
Hierarchical BEA zeolite was prepared through desilication or followed by acid treatment. The catalytic performance of samples evaluated using Friedel-Crafts acylations with two substrates different molecular sizes, furan (5.7 Å) and benzofuran (6.9 Å), in the presence acetic anhydride as acylating agent. application simplified Langmuir-Hinshelwood kinetic model showed that size substrate leads to activities, improved rate constant turnover frequency (TOF) solely for both desilicated further...