The guaiacol adsorption capacity of several Y zeolites with different physicochemical properties was tested by performing breakthrough experiments, in order to investigate the on Fluid Catalytic Cracking catalysts during bio-oils/FCC feedstocks co-processing. X-Ray diffraction, nitrogen sorption measurements and pyridine followed Infrared Spectroscopy were used determine framework Si/Al ratio, ...

The analysis of the impact cathode catalyst layer pore structure on membrane electrode assembly (MEA) cell performance a PEMFC is presented. In this study, pristine CMK-3 carbon support material with well-defined in 3–6 nm range together two nitrogen-doped variants analyzed against commercial black to achieve better understanding porosity-performance relations. We used chemically N-doped learn ...

Abstract The conversion of biomass-derived oxygenates over zeolite catalysts constitutes a challenge for the efficient production bio-based chemicals and fuels due to difficulty in controlling selectivity high coke formation such reactions. This is partly attributed microstructure catalyst which affects products derived from oxygenates. In this study, deactivation characteristics three differen...

Solid acid catalyst was produced from olive pomace (OP), characterized and used for the esterification of OP oil. pyrolyzed, physical activated by steam sulfonated using sulfuric acid. Commercial, coconut husk-based, carbon (CHAC) also comparison. The activation has shown a significant increase in (OPAC) surface area developing simultaneously its micro meso-porosity. sulfonation further increas...

Highly mesoporous nanosized carbon spheres (MCS) equipped with an active lipid bilayer demonstrate pronounced molecular release behavior, and excellent potential for drug delivery applications. We report a facile synthesis route for the creation of colloidal MCS with a bimodal pore size distribution, featuring a high BET surface area combined with high pore volume. Bimodal mesoporosity was achi...

It is difficult to deposit shape-controlled nanoparticles into a mesoporous framework while preserving the shape. For shaped platinum nanoparticles, which are typically 5-10 nm in size, capillary inclusion by sonication or the formation of a mesoporous framework around the shaped platinum nanoparticles has been attempted, but the nanoparticles aggregated or their shapes were degraded easily. In...

The following study demonstrates the possibility of producing different activated carbons from a mixture of waste tires and tubes. The mixture was pyrolyzed at different temperatures namely (400,450 and 500 о C) for two hours for the determination of best condition of heating. It was found through the study that semi carbonized marital produced via pyrolyis at 500 о C was the best; thus it was ...

There has always been a fascination with "impossible" compounds, ones that do not break any rules of chemical bonding or valence but whose structures are unstable and do not exist. This instability can usually be rationalized in terms of chemical or physical restrictions associated with valence electron shells, multiple bonding, oxidation states, catenation, and the inert pair effect. In the pu...