DOI: 10.1346/ccmn.1997.0450111. Rehydration of Zn-Al Layered Double Hydroxides

Rehydration of Zn-Al Layered Double Hydroxides

10.1346/ccmn.1997.0450111

Crossref journal-article

Cambridge University Press (CUP)

Clays and Clay Minerals (56)

Abstract

AbstractRehydration is shown to be straightforward for the reconstruction of polyoxometallate-pillared layered double hydroxides. Zn-Al hydrotalcite-like minerals were prepared with Zn/Al ratios of 1 to 5 by coprecipitation at pH 7. Good crystallinity was obtained for samples with Zn/Al ratios above 2. Thermal decomposition was achieved by calcining the samples at 300 to 900 °C. The calcined samples were exposed to decarbonated water, with or without hydrothermal treatment to evaluate reconstruction of the hydrotalcite-like minerals by rehydration. Restoration of the hydrotalcite-like structure was found to be independent of the Zn/Al ratios for samples calcined between 300 and 400 °C; however, asecond phase, aluminum hydroxide or zinc oxide, was generally detected. A spinel phase, formed during the calcination of samples at temperatures above 600 °C, inhibited reconstruction of the hydrotalcite-like phase. The rehydrated hydrotalcite-like minerals had Zn/Al ratios close to 2, irrespective of the chemistry of the starting material.

Bibliography

Kooli, F., DepÃ¨ge, C., Ennaqadi, A., de Roy, A., & Besse, J. P. (1997). Rehydration of Zn-Al Layered Double Hydroxides. Clays and Clay Minerals, 45(1), 92â98.

Authors 5

F. Kooli (first)
C. Depège (additional)
A. Ennaqadi (additional)
A. de Roy (additional)
J. P. Besse (additional)

References 30 Referenced 121

El Malki, K. . 1991. Synthèse et caractérisation de nouveaux hydroxydes doubles lamellaires. Etude des échanges anioniques et de la réticulation. Etude des propriétés électriques et magnétiques [Ph. D. thesis]. Aubiere, France: Université Blaise Pascal. 337 p.
10.1246/cl.1989.1485
10.1180/claymin.1967.007.2.05
10.1346/CCMN.1980.0280107
{'key': 'S0009860400007916_bib1', 'first-page': '458', 'article-title': 'A reinvestigation of takovite, a nickel aluminium hydroxy-carbonate of the pyroaurite group', 'volume': '62', 'author': 'Bish', 'year': '1977', 'journal-title': 'Am Mineral'} / Am Mineral / A reinvestigation of takovite, a nickel aluminium hydroxy-carbonate of the pyroaurite group by Bish (1977)
10.1002/jctb.280390408
10.1016/0168-7336(88)80089-5
10.4028/www.scientific.net/MSF.152-153.375
10.1016/0167-2738(91)90135-X
10.1016/0021-9517(85)90219-2
10.1346/CCMN.1975.0230508
{'key': 'S0009860400007916_bib2', 'first-page': '836', 'article-title': 'A crystal-chemical study of Mg,Al and Ni,Al hydroxy-perchlorates and hydroxy-carbonates', 'volume': '64', 'author': 'Brindley', 'year': '1979', 'journal-title': 'Am Mineral'} / Am Mineral / A crystal-chemical study of Mg,Al and Ni,Al hydroxy-perchlorates and hydroxy-carbonates by Brindley (1979)
{'key': 'S0009860400007916_bib29', 'first-page': '925', 'volume': '25', 'author': 'Shannon', 'year': '1969', 'journal-title': 'Table of effective ionic radii'} / Table of effective ionic radii by Shannon (1969)
10.1007/BF00356216
10.1021/ic00125a007
10.1021/ja00084a011
10.1021/ja00263a049
10.1021/i300021a020
10.1016/0920-5861(91)80068-K
10.1346/CCMN.1983.0310409
10.1016/0021-9517(92)90200-2
10.1039/FT9928802233
Michalowicz, A. . 1991. Logiciels pour la chimie. Paris: Société Française de Chimie. p 102–103.
{'key': 'S0009860400007916_bib9', 'first-page': '108', 'volume-title': 'Synthesis of microporous materials, vol 2.', 'author': 'de Roy', 'year': '1992'} / Synthesis of microporous materials, vol 2. by de Roy (1992)
10.1016/0021-9797(88)90263-9
10.1007/BF00348744
10.1016/0167-2738(90)90015-J
{'key': 'S0009860400007916_bib7', 'first-page': '485', 'volume-title': 'Preparation of catalysts III.', 'author': 'Courty', 'year': '1983'} / Preparation of catalysts III. by Courty (1983)
Chibwe, K. and Jones, W. . 1989. Intercalation of organic and inorganic anions into layered double hydroxides. J Chem Soc, Chem Commun 926–927. (10.1039/c39890000926)
Chibwe, M. and Pinnavaia, T.J. . 1993. Stabilization of a cobalt (II) phthalocyanine oxidation catalyst by intercalation in a layered double hydroxide host. J Chem Soc, Chem Commun 278–280. (10.1039/c39930000278)

Dates

Type	When
Created	19 years ago (Aug. 23, 2006, 3:37 a.m.)
Deposited	6 days, 9 hours ago (Aug. 19, 2025, 1:43 a.m.)
Indexed	3 days, 21 hours ago (Aug. 21, 2025, 1:44 p.m.)
Issued	28 years, 6 months ago (Feb. 1, 1997)
Published	28 years, 6 months ago (Feb. 1, 1997)
Published Online	1 year, 5 months ago (Feb. 28, 2024)
Published Print	28 years, 6 months ago (Feb. 1, 1997)

Funders 0

None

BibTeX

@article{Kooli_1997, title={Rehydration of Zn-Al Layered Double Hydroxides}, volume={45}, ISSN={1552-8367}, url={http://dx.doi.org/10.1346/ccmn.1997.0450111}, DOI={10.1346/ccmn.1997.0450111}, number={1}, journal={Clays and Clay Minerals}, publisher={Cambridge University Press (CUP)}, author={Kooli, F. and Depège, C. and Ennaqadi, A. and de Roy, A. and Besse, J. P.}, year={1997}, month=feb, pages={92–98} }

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