A5018401631- Catalysis for Biomass Conversion
- Supercapacitor Materials and Fabrication
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Layered Double Hydroxides Synthesis and Applications
- Biofuel production and bioconversion
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Plant-Derived Bioactive Compounds
- Botanical Studies and Applications
- Diatoms and Algae Research
- Electrospun Nanofibers in Biomedical Applications
- Advanced battery technologies research
- Copper-based nanomaterials and applications
- Adsorption and biosorption for pollutant removal
- Dye analysis and toxicity
- Advancements in Battery Materials
- Ziziphus Jujuba Studies and Applications
- Enzyme Catalysis and Immobilization
- Phosphorus and nutrient management
- Magnesium Oxide Properties and Applications
Universidad de Sevilla
2020-2025
Instituto de Ciencia de Materiales de Sevilla
2020-2025
University Ferhat Abbas of Setif
2020-2025
Université du littoral côte d'opale
2023-2024
Laboratoire de Génie des Procédés Catalytiques
2023
A series of -SO3R functionalized activated carbons (R=H, O, aryl) were prepared and applied in fructose dehydration reaction to 5-hydroxymethylfurfural. Different sulphonating methods introduce groups on catalyst surface with distinct donor-acceptor hydrophilic properties. Their nature influences significantly not only carbon's textural chemical properties but also the product yields selectivity reaction. The viability solvent free was investigated compared performance presence DMSO, where...
Different metal halide catalysts supported on a commercial active charcoal have been synthesized, activated, characterized and tested in glucose dehydration to 5-hydroxymethylfurfural using biphasic water/methyl isobutyl ketone media. The influence of the cation nature (K+, Ca2+, Sr2+, Mg2+) anion (F-, Cl-, Br-) catalytic performance solid is discussed terms conversion, HMF yield products selectivity. activation impregnated results great diversity sites, such as Bronsted sites (carboxylic...
Cotton stalks-based biochars were prepared and used to synthetize Ru-supported catalysts for selective production of γ-valerolactone from levulinic acid in aqueous media. Different biochars’ pre-treatments (HNO3, ZnCl2, CO2 or a combination them) carried out activate the final carbonaceous support. Nitric treatment resulted microporous with high surface area, whereas chemical activation ZnCl2 substantially increases mesoporous surface. The both treatments led support exceptional textural...
The proposed study is devoted to highlighting the importance of mixed oxides preparation through layered double hydroxide route for undesirable gas pollutants abatement. Different series Cu/Al/Ce with similar or different stoichiometrics were prepared and compared toluene and/or CO oxidation. Catalyst synthesis methods influence material properties activity oxidation reactions. high reactions derived from LDH explained by Cu/Ce synergy. presence in CO/toluene mixture does not affect total...
In this work, a local Algerian agricultural waste biomass, Ziziphus jujuba, was valorized into new low-cost biochar (JB).The produced by simple pyrolysis at 700°C for 1 h under an inert atmosphere and used as adsorbent to remove Indigo carmine dye (IC) from aqueous solution.The JB characterized Fourier-transform infrared spectroscopy, scanning electron microscopy-energy-dispersive X-ray diffraction, Raman, pH pzc , Brunauer-Emmett-Teller physico-chemical techniques.Adsorption studies were...
In this work, carbon nanofibers (CNFs) have been successfully functionalized by using different approaches and finally used for the preparation of Ru based catalysts.
In this work, the LDH approach was used to prepare MnCoAl mixed oxides with various textural and structural frameworks for purpose of enhancing total oxidation ethanol. Our results showed that catalytic activity influenced by Mn/Co ratio gas atmosphere during synthesis thermal treatment. Rietveld refinement processed estimate proportion phases presented in prepared materials. findings indicated generation Mn2CoO4 spinel Mn5O8 lamellar improved redox properties enhanced active sites oxides....
This work proposes catalytic systems for fructose dehydration to 5-hydroxymethylfurfural using a series of functionalized carbon nanofibers. The catalysts were synthesized via finely selected covalent grafting in order include variety functionalities like pure Bronsted acid, tandem Brønsted/Lewis and Lewis acid/Lewis base catalysts. After the characterization evaluation acidity strength amount acid centers, catalyst was screened related product distribution. best-performing also used...