Photochemistry of dibenzylketone in Nafion membranes
نویسندگان
چکیده
منابع مشابه
Mössbauer investigations of Nafion membranes
2014 Mössbauer experiments have been performed on Nafion ion exchange membranes neutralized with iron chloride. The recoilless fraction falls to zero at a temperature which depends on the water content, showing that the rigidity of the local ion environment is greatly influenced by the amount of water retained in these membranes. Two different iron sites are defined, whose relative intensities ...
متن کاملFirst time-resolved EPR observation of Nafion photochemistry.
Time-resolved EPR spectra of UV-irradiated Nafion reveal the formation of spin-polarized excited triplet states and allow the detection of photoinduced triplet-triplet energy transfer processes through hydrogen bonds between water and sulfonic acid groups.
متن کاملAqua-Vanadyl Ion Interaction with Nafion® Membranes
*Correspondence: Murugesan Vijayakumar and Wei Wang, Energy and Environmental Directorate, Pacific Northwest National Laboratory, 902 Battelle Blvd, P.O. Box 999, Richland, WA 99352, USA e-mail: [email protected]; [email protected] Lack of comprehensive understanding about the interactions between Nafion membrane and battery electrolytes prevents the straightforward tailoring of optimal materials ...
متن کاملNafion-layered sulfonated polysulfone fuel cell membranes
Sulfonated polysulfone (SPSU) with high ion exchange capacity (IEC) and ion conductivity was synthesized through deep sulfonation of polysulfone using the trimethysilyl chlorosulfonate as sulfonation agent. The silicon-containing compounds formed during the synthesis of SPSU were completely removed from the SPSU by simple evaporation. Water swelling, ion exchange capacity, conductivity and fuel...
متن کاملNafion/Analcime and Nafion/Faujasite Composite Membranes for High Temperature Operation of PEMFC
─The Nafion/zeolite composite membranes were synthesized for polymer electrolyte fuel cells (PEMFCs) by adding zeolite in the matrix of Nafion polymer. Two kinds of zeolites, Analcime and Faujasite, were used. The physicochemical properties of the composite membranes such as water uptake, ion-exchange capacity, hydrogen permeability, and proton conductivity were determined. The fabricated compo...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1987
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v87-355