A5027981280- Thermochemical Biomass Conversion Processes
- Catalysis for Biomass Conversion
- Lignin and Wood Chemistry
- Catalysis and Hydrodesulfurization Studies
- Lubricants and Their Additives
- Biodiesel Production and Applications
- Biofuel production and bioconversion
- Advanced Combustion Engine Technologies
- Catalytic Processes in Materials Science
- Advanced Cellulose Research Studies
- Catalysts for Methane Reforming
- Forest Biomass Utilization and Management
- Bioeconomy and Sustainability Development
- biodegradable polymer synthesis and properties
- Nanocomposite Films for Food Packaging
- Graphite, nuclear technology, radiation studies
- Rural Development and Agriculture
- Enzyme-mediated dye degradation
- Recycling and Waste Management Techniques
- Composting and Vermicomposting Techniques
- Pharmaceutical and Antibiotic Environmental Impacts
- Microbial Metabolic Engineering and Bioproduction
- Electrocatalysts for Energy Conversion
- Recycling and utilization of industrial and municipal waste in materials production
- Biochemical and biochemical processes
University of Coimbra
2008-2025
Non-biodegradable superabsorbent polymers (SAPs) in personal care products (PCPs) pose significant environmental and health concerns despite their high absorption capacity. The aim of this study was to develop cellulose-based hydrogels as a sustainable alternative those conventional SAPs, taking advantage cellulose properties such biocompatibility, biodegradability, hydrophilicity. A synthesized allyl (AC) derivative copolymerized with unusual monomers used the production influence monomer...
In this work, a Mo2C catalyst that was supported on commercial carbon nanofibers (CNF) synthetized and tested in the hydrodeoxygenation (HDO) of guaiacol. The effects operating conditions (temperature pressure) reaction time (2 4 h) conversion guaiacol products selectivity were studied. major cresol phenol, followed by xylenols toluene. use more severe during HDO caused diversification pathways, consequently to products. formation phenol may have occurred demethylation guaiacol,...
The concept of bioeconomy has been promoted worldwide in order to replace fossil-based resources and find new strategies for waste management, by converting biomass into energy, chemicals, value-added products, a sustainable way. Despite the efforts that have made this area, there are still some unexplored raw materials globally, namely from agricultural forestry industries. Therefore, aim work was characterize four abundant residues Portuguese agroforestry industry, including pruning (pine...
Abstract Molybdenum carbide supported on activated carbon (β‐Mo 2 C/AC) has been tested as catalyst in the reductive catalytic fractionation (RCF) of lignocellulosic biomass both batch and Flow‐Through (FT) reaction systems. High phenolic monomer yields (34 wt.%) selectivity to monomers with reduced side alkyl chains (up 80 could be achieved presence hydrogen. FT‐RCF were made no hydrogen feed, thus via transfer hydrogenation from ethanol. Similar attained using high catalyst/biomass ratios...
Lignocellulosic materials are promising alternatives to non-renewable fossil sources when producing aromatic compounds. Lignins from
Abstract In this work, cellulose powder obtained by acid hydrolysis of industrial Eucalyptus kraft pulp was dissolved in NaOH/Urea/H 2 O system (7/12/81 wt%) a concentration 6% (w/v). Cellulose films were prepared spreading the over glass plates, followed thermal regeneration – novel approach reported here for first time. To obtain final flexible films, plasticization carried out immersion aqueous glycerol solutions various concentrations (10 to 70 and hot-pressing (at 0.1 MPa 105 ºC) used...
Charcoal was gasified using air and oxygen as well with mixtures of steam, aiming to produce a gas stream high hydrogen content. The effects the equivalence ratio (ER) steam-to-carbon (S/C) on carbon conversion, producer yield, heating value, composition apparent energy efficiency (AEE) process were studied. gasification experiments performed in laboratory-scale fluidized bed rig working at 1173 K atmospheric pressure γ-Al2O3 material. Results showed that, N2-free basis, obtained by pure...
Abstract Stump wood is a forest residue having significant valorization potential. The aims of this work were to exploit pine stumps as carbohydrate and lignin feedstock, convert the fraction bioethanol by simultaneous saccharification fermentation (SSF). Pinus pinaster stump (PPSW) was delignified alkaline organosolv (AOS) process. Soda (SA) cooking used benchmark Higher pulp yields obtained in AOS treatments, whilst SA showed highest cellulose content. In SSF PPSW pulps, high ethanol...