Synthesis and characterization of Ln/Al pillared clays
Conference
·
OSTI ID:462721
Pillared clays might be an alternative to traditional microporous alumina or zeolite-based catalysts provided they have thermal and structural stability to withstand the severe conditions during reaction or regeneration. La{sup 3+}-Al{sup 3+} and Ce{sup 3+}-Al{sup 3+} pillar precursors were synthesized and intercalated in swelling montmorillonite type clays. {sup 27}-Al-NMR and {sup 139}La-NMR spectra do not confirm chemical interaction between Al and La ions in solution, but after pillaring and calcination (400 C) d-spacings in the range 18.5 {angstrom}--20.5 {angstrom} indicate indeed a strong interaction between the Al-La-species. Also, Cd{sup 4+} (Sulfate) cations do interact with Al{sup 3+} in the pillar-precursor-solution, into the pH interval 2.78 {le} pH {le} 3.99.
- OSTI ID:
- 462721
- Report Number(s):
- CONF-960401--; ISBN 1-55899-334-7
- Country of Publication:
- United States
- Language:
- English
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