Synthesis and characterization of new azaheterocyclic aromatic phosphonates for hybrid materials for fuel cell applications

Teixeira, Fatima; Rangel, C. M.

http://hdl.handle.net/10400.9/3290

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Authors

Teixeira, Fatima

Rangel, C. M.

Abstract(s)

ABSTRACT: This work reports the synthesis and characterization of new azaheterocyclic aromatic phosphonates derivated from benzimidazole and benzotriazole by nickel-catalyzed Arbuzov reaction of 4,7-dibromo-2,1,3-benzothiadiazole with triethyl phosphite, followed by reductive sulfur extrusion reaction and cyclization. The compounds were characterized by NMR and mass spectrometry (low and high resolution). These azoles will be incorporated into proton conductive inorganic-organic hybrid membranes of mesoporous silica to produce novel membranes materials with high proton conductivity for intermediate temperature PEMFCs.

Keywords

Fuel cells Polymer electrolyte membrane Proton exchange membrane Benzimidazole Hybrid materials Phosphonates

URI

http://hdl.handle.net/10400.9/3290

Citation

Teixeira, Fátima C... [et.al.] - Synthesis and characterization of new azaheterocyclic aromatic phosphonates for hybrid materials for fuel cell applications. In: Proceedings of 5th International Seminar, Advances in Hydrogen Energy Technologies: Key to Sustainable Energy Markets, 2012, 29-30 November, Oeiras, Portugal, p. 46-49