This work studies the influence of introducing a CO2 adsorbent in bimetallic catalytic fixed bed reactor. The catalyst is lab-made Fe-Ni allow (2.5:7.5 wt/wt) supported on gamma alumina. Two adsorbents were tested this study, lab made CaO and Na2O (10

A set of alumino-silicate glasses with SiO2-Al2O3-Na2O-CaO compositions was investigated using Raman and NMR spectroscopy techniques by classical molecular dynamics, in order to study the structural modifications which occur when CaO progressively replaces Na2O Al2O3 SiO2. The effect a gradual increase content also studied. Al always 4 coordinated for all studied, including peraluminous glasses...

The similarity of the fine fraction dredged freshwater sediments to natural clays stimulates valorization in a product similar expanded clay aggregates, obtained by bloating at high temperature. impact ratios between different flux elements (Fe2O3 + CaO MgO K2O Na2O) on melting behavior is quantified using thermodynamic modeling and validated with experiments. total content alkalis found be key...

Closed pore glass foams with dimensions of 60mm × 20 mm were produced using agro-industrial residues. Samples containing sodo-calcic powder (78%wt) and rice husk ash (16%wt) characterized, their technological properties investigated. The samples synthesized in a conventional muffle furnace at 750–800–850 °C. results presented for apparent density (0.24–0.29 g/cm3), compressive strength (1.5–2.3...

In the present study, valorization potential of marble waste in presence metakaolin via alkali activation was explored. The activating solution used consisted NaOH and sodium silicate solutions. effects to ratio, particle size raw materials, curing temperature, Na2O/SiO2 H2O/Na2O molar ratios on main properties morphology produced alkali-activated materials (AAMs) evaluated. durability structur...

In this manuscript we report crystal structure of a new complex binary phosphate K2Ce(4+)(PO4)2 in K2O-P2O5-CeO2 system prepared by solid state reaction at moderate temperature conditions. The prepared material was characterized by powder X-ray diffraction using lab source and synchrotron radiation as well as thermal analyses, Raman scattering, FTIR, and X-ray photoelectron spectroscopic studie...

An antimony oxide based monolithic glass with very high Sb2O3 content (70 mol%) in the system K2O-B2O3-Sb2O3 (KBS) has been prepared for the first time. Its phonon energy (602 cm(-1)), evaluated by infrared reflection spectroscopy, is found to be very close to that of fluoride glasses (500-600 cm(-1)). After doping with different rare-earth ions, their UV-vis absorption and photoluminescence pr...