Polymer Testing, 2021 Sulfonated polyether ether ketone is currently under investigation to replace the expensive Nafion® as polymer electrolyte membrane. Sulfonic acid group is hydrophilic in nature and plays a key role in proton transfer in polymer electrolyte membranes ...
Sher Ayaz, Hai-Yin Yu
doaj +1 more source
Reply to "Comment on 'Long-term atmospheric measurements of C1-C5 alkyl nitrates in the Pearl River Delta region of southeast China'" [PDF]
, 2006 Department of Civil and Environmental ...
Atlas, E +8 more
core +2 more sources
Selectivity of Direct Methanol Fuel Cell Membranes
Membranes, 2015 Sulfonic acid-functionalized polymer electrolyte membranes alternative to Nafion® were developed. These were hydrocarbon systems, such as blend sulfonated polyetheretherketone (s-PEEK), new generation perfluorosulfonic acid (PFSA) systems, and composite
Antonino S. Aricò +6 more
doaj +1 more source
Nanostructured Pd barrier for low methanol crossover DMFC
International Journal of Hydrogen Energy, 2014 This work reports the successful fabrication of Pd nanostructured proton conducting-fluid blocking barriers on standard perfluorosulfonic acid membranes, able to reduce considerably methanol crossover in Direct Methanol Fuel Cells. The barrier nanostructure and grafting to the underlying membrane was optimized by fine-tuning the deposition conditions ...
CASALEGNO, ANDREA +7 more
openaire +3 more sources
Contribution of nanoclays to the barrier properties of a model proton exchange membrane for fuel cell application [PDF]
, 2005 peer reviewedaudience: researcherDirect methanol fuel cells (DMFCs) that use a proton exchange membrane (PEM) as electrolyte, is a promising alternative source of energy for the future. However, methanol crossover from the anodic side to the cathodic one
Allen, Simon +5 more
core +5 more sources
Electrocatalytic C─N Coupling in Aqueous Solutions for High‐Value Product Synthesis
Angewandte Chemie, EarlyView.Electrocatalytic C–N coupling offers a sustainable route to synthesize crucial organic nitrogen compounds from abundant feedstocks under mild conditions. This review examines recent progress in overcoming key challenges, like slow kinetics and competing reactions through advanced catalysts and novel mechanisms, paving the way for transforming chemical ...
Yunpeng Zuo +3 more
wiley +2 more sources
Fabrication of Electrically Conductive, Fluid Impermeable Direct Methanol Fuel Cell (DMFC) Graphite Bipolar Plates by Indirect Selective Laser Sintering (SLS) [PDF]
, 2008 Graphite bipolar plates are highly desirable due to their properties of high electrical conductivity and low weight but are associated with prohibitive machining costs arising from poor mechanical properties.
Alayavalli, Kaushik, Bourell, David L.
core +1 more source
Regiodivergent C3 and C4 Amination of Quinolines via Radical and Ionic Pathways
Angewandte Chemie, EarlyView.A regiodivergent strategy converts a single N‐aminoquinolinium precursor into either C3‐ or C4‐aminated quinolines. Nucleophile‐induced dearomatization diverges into light‐driven N‐centered radical capture (C3) or base‐promoted SNAr (C4), enabling rapid assembly of aminoquinoline libraries and late‐stage diversification.
Ye‐Eun Kim +3 more
wiley +2 more sources
A Randomized, Double-Blind, Two-Treatment, Two-Period, Crossover Study Investigating the Systemic Bioavailability of a Novel Cocrystal Ubiquinol Formulation Compared with a Ubiquinone Formulation in Healthy Adults. [PDF]
Clin Pharmacol Drug DevAbstract Coenzyme Q10 (CoQ10) is a naturally occurring biochemical cofactor found in all human cell membranes in two interconvertible forms: oxidized ubiquinone and reduced ubiquinol. Clinical studies indicate that different CoQ10 formulations have different absorption rates, highlighting research comparing their systemic bioavailability.
Mei X +4 more
europepmc +2 more sources
Possibilities of upgrading solid underutilized lingo-cellulosic feedstock (carob pods) to liquid bio-fuel: Bio-ethanol production and electricity generation in fuel cells - A critical appraisal of the required processes [PDF]
, 2017 The exploitation of rich in sugars lingo-cellulosic residue of carob pods for bio-ethanol and bio-electricity generation has been investigated. The process could take place in two (2) or three (3) stages including: a) bio-ethanol production originated ...
Skoulou, Vasiliki K., Vourdoubas, John
core +2 more sources