Study of Reactions in the Phosphate-Tungstate System: Electromembrane Synthesis of the Heteropoly Acid H3PW12O40
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Russian Chemical Bulletin
ISSN: 1066-5285
, E-ISSN: 1573-9171
|
| Output data |
Year: 1991,
Volume: 40,
Number: 8,
Pages: 1527-1533
Pages count
: 7
DOI:
10.1007/BF01172243
|
| Tags |
NUCLEAR MAGNETIC-RESONANCE |
| Authors |
Kulikova O.M.
1,2
,
Maksimovskaya R.I.
1,2
,
Kulikov S.M.
1,2
,
Kozhevnikov I.V.
1,2
|
| Affiliations |
| 1 |
Institute of Catalysis, Siberian Branch, Academy of Sciences of the USSR
|
| 2 |
Institute of Chemistry and Chemical Technology Siberian Branch, Academy of Sciences of the USSR
|
|
We have studied the electromembrane method for obtaining H3PW12O40. Using P-31, W-183, and O-17 NMR, we have studied the conversions of isopoly- and heteropolytungstates over a broad pH range. Depending on the acidity of the medium and the form of the isopolytungstate, we propose two schemes for reaction of isopolytungstates with phosphate ions during formation of H3PW12O40.