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Metal-ion zeolites obtained by chemical and mechanochemical methods as Fenton-l...
Costa, J. T.; Ivasiv, V.; Bertão, A. R.; Nunes, N.; Mestre, A. S.; Carvalho, A. P.; Baltazar, F.; Moreira, J. N.; Neves, Isabel C.; Martins, A.One of the critical steps for the development and health applications of inorganic nanoparticles is to exhibit high efficiency without inducing toxicity. In this work, metal-ion zeolites were developed to be used as Fenton-like catalysts for health applications. ZSM-5 and BEA zeolites were modified through chemical and mechanochemical methods to obtain nanomaterials with tuned particle size and texture. Charact...
The influence of the textural properties of activated carbons on acetaminophen ...
Galhetas, M.; Andrade, Marta A.; Mestre, A. S.; Kangni-foli, Ekoé; Brito, Maria J. Villa de; Pinto, Moisés L.; Lopes, Helena; Carvalho, A. P.The influence of temperature (20–40 °C) on the acetaminophen adsorption onto activated carbons with different textures was studied. Different temperature dependences, not explained by kinetic effects, were observed for carbons with different micropore size distribution patterns: adsorption capacity increased for pine gasification residues (Pi-fa) derived carbons and decreased for sisal based materials. No signi...
Carbon-based materials prepared from pine gasification residues for acetaminoph...
Galhetas, M.; Mestre, A. S.; Pinto, Moisés L.; Gulyurtlu, Ibrahim; Lopes, Helena; Carvalho, A. P.Fly ash, a residue produced frompine gasification,was used as precursor of carbon-basedmaterials assayed in acetaminophen adsorption. Materials prepared by activation with K2CO3, presented high porosity development (ABET 1200m2 g1) and samples calcined at 900 C presented high volumes of large micropores and mesopores. Kinetic and equilibrium acetaminophen adsorption data showed that the process obeys to the pse...
Chars from gasification of coal and pine activated with K2CO3: Acetaminophen an...
Galhetas, M.; Mestre, A. S.; Pinto, Moisés L.; Gulyurtlu, Ibrahim; Lopes, Helena; Carvalho, A. P.The high carbon contents and low toxicity levels of chars from coal and pine gasification provide an incentive to consider their use as precursors of porous carbons obtained by chemical activation with K2CO3. Given the chars characteristics, previous demineralization and thermal treatments were made, but no improvement on the solids properties was observed. The highest porosity development was obtained with the...
Carbon-based materials prepared from pine gasification residues for acetaminoph...
Galhetas, M.; Mestre, A. S.; Pinto, Moisés L.; Gulyurtlu, Ibrahim; Lopes, Helena; Carvalho, A. P.Fly ash, a residue produced frompine gasification,was used as precursor of carbon-basedmaterials assayed in acetaminophen adsorption. Materials prepared by activation with K2CO3, presented high porosity development (ABET 1200m2 g1) and samples calcined at 900 C presented high volumes of large micropores and mesopores. Kinetic and equilibrium acetaminophen adsorption data showed that the process obeys to the pse...