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Proton sites in Keggin heteropoly acids from17O NMR (1995)

Kozhevnikov, I. V. ; Sinnema, A. ; Bekkum, H.

Springer

Catalysis letters 34 (1995), S. 213-221

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ISSN: 1572-879X

Keywords: tungsten heteropoly acids ; determination of proton sites ; 17O MAS and solution NMR

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Abstract The structure of the bulk proton sites in dehydrated solid Keggin-type heteropoly acids (HPA) H3PW12O40 and H4SiW12O40 was determined by17O NMR. The terminal W=O oxygen atoms in Keggin heteropolyanions were found to be the predominant protonation sites. The protonation of HP As in solution is also discussed on the basis of17O NMR data.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00808336

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