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- W2182291570 abstract "Mesoporous titania has been prepared using micellar aggregates as templates. We have selected and synthesized a titanatrane complex, (Dimethylaminotitanatrane), as precursor, because o f the high reactivity of Ti(OR) 4 species towards hydrolysis and condensation, The formation of the mesoporous oxide is in fact considered to depend up on the relative rates of the inorganic precursor’s hydrolysis and condensation reactions and that of t he organic-inorganic self-assembling process. Thermal treatments in the temperature range 350 ‐ 600°C of the precursor solutions achieved the formation of mesoporous TiO 2. The oxide has been characterized by Nitrogen adsorption-desorption isotherms, TG/DTA, FTIR, SEM, and XRD. The results demonstrate that high purity, mesoporous titanium dioxide was obtained with the preparative procedure developed. The morphological characteristics of titanium oxide powders calcined at 350 oC 120 hours and 450 oC 6 hours show mesoporous structure of powders, 3.5 nm approximately pore siz e distribution. The mesoporous structure disappearanc e from inorganic wall collapse was observed at high calcination temperature above 450 oC. Nafion membrane, a preliminary membrane, containing mesoporous titania as a filler was successfully prepared. Nafion was selected to study DMFC efficiency on account of its high conductivity performance. The result illustrates homogeneous and high dispersion of mesoporous titania particles in Nafion membrane. This modified Nafion membrane was operated with the fabrication of Direct Methanol Fuel Cells, (DMFC) and DMFC performances were improvably observed." @default.
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- W2182291570 date "2003-01-01" @default.
- W2182291570 modified "2023-09-25" @default.
- W2182291570 title "SYNTHESIS OF MESOPOROUS TITANIA FOR ENVIRONMENTAL APPLICATIONS." @default.
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