PREPARATION AND CHARACTERIZATION OF THE INTERCALATION COMPOUNDS OF ALPHA-HAFNIUM PHOSPHATE WITH METHYLPIPERIDINES

Authors
BARCINA LM VEGA A SUAREZ M LLAVONA R RODRIGUEZ J
Citation
Lm. Barcina et al., PREPARATION AND CHARACTERIZATION OF THE INTERCALATION COMPOUNDS OF ALPHA-HAFNIUM PHOSPHATE WITH METHYLPIPERIDINES, Solvent extraction and ion exchange, 16(3), 1998, pp. 861-873
Citations number
20
Categorie Soggetti
Chemistry
Journal title
Solvent extraction and ion exchange → ACNP
ISSN journal
07366299
Volume
16
Issue
3
Year of publication
1998
Pages
861 - 873
Database
ISI
SICI code
0736-6299(1998)16:3<861:PACOTI>2.0.ZU;2-F
Abstract
The mechanism of intercalation reactions between 4-methylpiperidine an d n-methylpiperidine with alpha-HfP in aqueous media has been studied. The intercalated solids obtained are characterized by chemical and th ermal analysis, X-ray diffractions and IR spectroscopy. Titration and intercalation isotherms, hydrolysis curves, corrected isotherms, and p hase distributions are obtained. Two new phases with the composition a lpha-Hf(HPO4)(2).amine.H2O are isolated and characterized. The influen ce of basicity and steric factors on the intercalation behaviour is di scussed. The arrangement of the two isomeric forms of methylpiperidine in the interlayer space is postulated.