A5084469217- Concrete and Cement Materials Research
- Chemical Looping and Thermochemical Processes
- Recycling and utilization of industrial and municipal waste in materials production
- Dental Trauma and Treatments
- Thermochemical Biomass Conversion Processes
- Innovative concrete reinforcement materials
- Advanced ceramic materials synthesis
- Magnesium Oxide Properties and Applications
- Carbon Dioxide Capture Technologies
- Adsorption and Cooling Systems
- Thermal and Kinetic Analysis
- Layered Double Hydroxides Synthesis and Applications
- Subcritical and Supercritical Water Processes
- Coal and Its By-products
- Recycled Aggregate Concrete Performance
- Iron and Steelmaking Processes
- MXene and MAX Phase Materials
- Dental Implant Techniques and Outcomes
- Smart Materials for Construction
- Oral and Maxillofacial Pathology
- Advanced materials and composites
- Nuclear materials and radiation effects
- Endodontics and Root Canal Treatments
- Educational Environments and Student Outcomes
- Facial Trauma and Fracture Management
Institute of Science and Technology for Ceramics
2015-2024
National Research Council
2014-2024
National Academies of Sciences, Engineering, and Medicine
2015
University of Bologna
2012
In this work, three metakaolin-based geopolymer matrices were prepared, varying the molar ratio Si:Al (2.0 or 1.2) and type of cation (sodium potassium). Starting from these matrices, geopolymer-zeolite composites synthesized consolidated (80 °C), incorporating a commercial sodium-based zeolite, Na4A, with aim producing post combustion CO2 adsorbents, since presence Na4A crystalline phase is desirable due to its known remarkable adsorption capacity. The matrix = 1.2 allowed in situ...
Ashes derived from the combustion of vegetal and animal biomass still represent a mostly unexplored secondary raw material for production alkali-activated materials, given their peculiar chemical nature. In this work, calcium phosphate ashes were successfully used as partially reactive fillers in metakaolin-based geopolymer composite to produce, by direct foaming, sustainable lightweight boards with thermal insulating properties. The investigated materials obtained activating blend...
Novel ceramic foams loaded with Fe and Fe/Mn oxides were developed via geopolymerization process as catalysts for tar removal in syngas cleaning operations. The realized through polymer scaffold template replica, by impregnating polyurethane or cellulose a metakaolin based geopolymer slurry 19 wt.% powdered Fe2O3 Mn2O3 metal oxides. A thermal treatment up to 900° C was applied vitrify partially crystallize into leucite the binder. Foams from showed better structural properties compared those...
Abstract Load‐bearing and thermal insulating wool waste/geopolymer composites with fire‐resistant properties were produced characterized. Two formulations, different amounts of fibers, corresponding in the final to about 23 vol% 31 vol%, tested. The exhibited an average density 1.0 g/cm 3 , a conductivity 0.2 W/mK, compressive flexural strength around 9 5 MPa, respectively. fracture behavior improved by presence which promoted onset toughening mechanism material. Results showed that...
This article reports on the use of strontium oxide (SrO)-based sorbents for chemical sorption carbon dioxide (CO2) at high temperatures (>1000 °C). Two different sizes SrO granules were tested as potential sorbent materials through cycles carbonation and calcination temperature in a fixed-bed reactor, under flux argon (Ar) Ar/CO2. Thermogravimetric analysis (TGA) assessed their carrying capacity effectiveness increasing numbers cycles. Further investigation was dedicated to combination with...
Geopolymer-hydrotalcites composites have been prepared and compared to explore their use in the field of CO2 adsorption for a wide range working temperatures relative applications. Two commercial hydrotalcites, with different Mg:Al ratio, were tested as fillers geopolymer matrix up maximum 37 wt%. A high compressive strength (25–27 MPa) was retained at 500 °C, which is temperature hydrotalcites transformation into amorphous mixed solid oxides able adsorb CO2. Composites characterized term...
Ice-templating (freeze-casting) technique was applied to a novel class of geopolymer composites containing Fe/Mn oxides, previously tested and reported in others works as synthetic oxygen carriers for chemical looping combustion (CLC), order obtain composite monoliths with lamellar macro-porosities by unidirectional freezing water-based sol-gel systems. Geopolymer-Fe/Mn oxides were also produced beads, suitable fixed bed reactors, an injection-solidification method liquid nitrogen. After...
This article reports a research aimed at investigating agglomeration phenomena during fluidized-bed thermochemical processing of olive husk biomass and their mitigation, taking into account both combustion gasification conditions. Agglomeration is due to the presence alkalis in fuel ash producing low-melting compounds combination with SiO2 present common bed materials (e.g., silica sand). The use kaolin fireclay as additives some cases for inhibiting was investigated. Experiments were...
Methane reforming is an industrial process for hydrogen production having a high CO2 footprint that can be mitigated either by using renewable methane, or recycling carbon dioxide from capture. assisted oxygen carrier was currently investigated, being attractive option of and monoxide mixtures. The distinctive aspect present research the development three different granular materials based on CeO2 to used in fluidized beds, obtained pelletization calcination at 900 1200 °C CeO2/Al2O3 powder....