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27Al and 31P NMR investigations of soluble aluminophosphate species in alcohol-water mixtures

Samadi Maybodi, A ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1007/s10953-012-9839-y
  3. Publisher: 2012
  4. Abstract:
  5. In this work, phosphorus-31 and aluminum-27 nuclear magnetic resonance techniques were used to characterize the distribution of soluble aluminophosphate species in methanol + water and ethanol + water mixtures. The assignment of the peaks to alu-minate species was attempted, clarifying earlier work and producing information on the different aluminophosphate complexes. Nine peaks were observed at -0.41, -6.4, -7.5, -7.9, -13.1, -13.9, -16.6, -18.1 and -20.6 ppm. Four new peaks appeared in the 31P NMR spectra of the alcoholic aluminophosphate solutions and their intensities changed with changes of the alcohol:water volume ratio. These new peaks were observed in the presence of methanol or ethanol but not in aqueous solutions
  6. Keywords:
  7. 27Al NMR ; 31P NMR ; Alcohol-water mixture ; Aluminophosphate
  8. Source: Journal of Solution Chemistry ; Volume 41, Issue 5 , 2012 , Pages 888-897 ; 00959782 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs10953-012-9839-y