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STEPWISE INTERCALATION OF PIPERJDINE IN LAYERED α- AND γ- HAFNIUM PHOSPHATE
The mechanism of intercalation of piperidine in α-hafnium phosphate, Hf(HPO 4 ;V) 2 H 2 O (dooz = 7.6 Ȧ) and γ-hafnium phosphate, Hf(P0 4 )(H 2 P0 4 ) 2H 2 0 (doo2 - 12.1 Ȧ), has been investigated by the batch method. Saturated phases were not obtained. The reactions take place stepwise with the fin...
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| Published in: | Solvent extraction and ion exchange 1999-09, Vol.17 (5), p.1371-1384 |
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| Main Authors: | , , , , , , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites |
| Online Access: | Get full text |
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| Summary: | The mechanism of intercalation of piperidine in α-hafnium phosphate, Hf(HPO
4
;V)
2
H
2
O (dooz = 7.6 Ȧ) and γ-hafnium phosphate, Hf(P0
4
)(H
2
P0
4
) 2H
2
0 (doo2 - 12.1 Ȧ), has been investigated by the batch method. Saturated phases were not obtained. The reactions take place stepwise with the final formation of the compounds Hf(HPO
4
)
2
C
5
H
11
N H
2
O and Hf[P0
4
)(H
2
P0
4
)C
5
H
11
N 2H
2
0. In the α-HfP case, no intermediate phases have been detected but in the γ-HfP case, a new phase, Hf(PO
4
)(H
2
PO
4
)0.38C
5
H
11
N 2H
2
O, was isolated The characterization of the intercalates was made by chemical and thermal analysis, X-ray diffraction and 1R spectroscopy. Materials with a monolaminar arrangement of amine molecules in the phosphate interlayer region were obtained and the results are compared to those described using different intercalation conditions. |
|---|---|
| ISSN: | 0736-6299 1532-2262 |
| DOI: | 10.1080/07366299908934652 |