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Magnetorheological characterization of magneto-responsive fluids
(2012)
The work presented in this dissertation focuses primarily on the rheological characterization of magneto-responsive fluids, consisting of suspensions of magnetic nanoparticles in non-magnetic liquid media. The rheology of ...
Transport properties of proton-exchange membranes: effect of supercritical-fluid processing and chemical functionality
(2010)
Nafion® membranes commonly used in direct methanol fuel cells (DMFC), are tipically limited by high methanol permeability (also known as the cross-over limitation). These membranes have phase segregated sulfonated ionic ...
Towards the design of highly selective molecularly imprinted hydrogels for biosensor applications
(2009)
Robust molecular recognition is essential to enhance the accuracy of diagnostic devices aiming for a better efficacy in the clinical treatment of patients. The molecular imprinting technique has gained attention to generate ...
Maxwell-Stefan modeling of mass transfer effects in reactive chromatography
(2009)
A rigorous dynamic theoretical model was developed and implemented for simultaneous diffusion, reaction, and adsorption inside porous solids for the fixed bed chromatographic reactor (FBCR), true moving bed chromatographic ...
Novel sulfonated ether based block copolymer ionomers as proton exchange membranes for fuel cells applications
(2017)
This investigation studied the morphology, hydration, and transport properties of different membranes for direct methanol fuel cell (DMFC) applications. First, sulfonated poly(ether ether ketone) (SPEEK) membranes were ...
Computational study of the physical adsorption of CO₂ on novel sorbents based on porous coordination polymers
(2017)
CO2 capture has motivated the design and synthesis of a large number of adsorbent materials. An example of these materials are the coordination pillared-layers (CPLs), which have emerged as possible candidates for CO2 ...
Functionalization and characterization of Sulfonated Poly (Styrene-Isobutylene-Styrene) membranes for fuel cells and specialty separation applications
(2014)
In this study, the transport properties of poly(styrene-isobutylene-styrene) (SIBS) block copolymer were determined as a function of sulfonation level (0-94.9 %), counter ion substitution (Ba+2, Ca+2, Mg+2, Mn+2, Cu+2, ...
Synthesis, characterization and detemplation of thermally unstable 3-D Metal-Substituted Aluminophosphates.
(2009)
The extent of the detemplation process in Me-SBE (Me = Co2+, Mg2+ and Mn2+) aluminophosphates was investigated. Hydrothermal synthesis conditions were optimized to obtain materials with minimal phase impurities. SEM analysis ...
Silicoaluminophosphate nanoporous materials for carbon dioxide adsorption at low concentration
(2011)
The incorporation of extraframework Sr2+ and Ba2+ cations onto silicoaluminophosphate (SAPO-34) zeolitic materials has been proven to influence their adsorptive properties. In this study, three approaches were employed to ...
Selective nanoporous sorbents for gas based separations: Ion exchanged silicoaluminophosphates and titanosilicates
(2009-05)
Two specific sorbents were targeted in this research work: silicoaluminosphosphates (SAPOs) and titanium silicates. For the former, Na+ -SAPO-34 sorbents were ionexchanged with several cations (Ag+, Mg2+, Ca2+, Sr2+, Ti3+, ...