New Materials for Selective Gas Separations

Fluorinated and nanoporous graphene materials as sorbents for gas separations.

The physisorption of gases on surfaces depends on the electrostatic and dispersion interactions with adsorbates. The former can be tuned by introducing charge variations in the material, and the latter can be tuned by chemical substitution. Using atomistic Monte Carlo calculations, the Henry's law constants, and isosteric heats of adsorption of CH(4), CO(2), N(2), O(2), H(2)S, SO(2), and H(2)O ...

Compatibilized Immiscible Polymer Blends for Gas Separations

Membrane-based gas separation has attracted a great deal of attention recently due to the requirement for high purity gasses in industrial applications like fuel cells, and because of environment concerns, such as global warming. The current methods of cryogenic distillation and pressure swing adsorption are energy intensive and costly. Therefore, polymer membranes have emerged as a less energy...

Tunable Composite Membranes for Gas Separations

New Techniques for Chiral Separations

Throughout this work, different methods for chiral separations have been developed and investigated. Cyclodextrins have been employed within each of the projects, with the exception of the last section, where the protein avidin was used. Gas chromatography (GC) has been utilized for the study of enantiomer resolution of the atropisomers of PCBs, o,p ́-DDD and o,p ́-DDT. Different substituents and...

NEW REFRACTORY MATERIALS FOR THE COPPER INDUSTRY

Wear of various basic refractory materials to substitute to currently used magnesia chrome bricks has been studied, measuring matte and slag penetration and dissolution, through different cup and rotary slag tests. High magnesia with and without impregnation, magnesia graphite, magnesia-alumina spinel with and without impregnation, olivine-magnesia and olivine magnesia- graphite bricks, as well...