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A Peculiar Morphology of Gibbsite and Nordstrandite Co-Crystallized in the Presence of Tartrate in a Strongly Alkaline Environment

Published online by Cambridge University Press:  01 January 2024

P. Adamo ,
M. Pigna ,
S. Vingiani  and
A. Violante
P. Adamo*
Affiliation:
Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Via Università, 100, 80055 Portici, Italy
M. Pigna
Affiliation:
Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Via Università, 100, 80055 Portici, Italy
S. Vingiani
Affiliation:
Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Via Università, 100, 80055 Portici, Italy
A. Violante
Affiliation:
Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Via Università, 100, 80055 Portici, Italy
*
*E-mail address of corresponding author: adamo@unina.it
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Abstract

The nature and morphology of Al(OH)3 polymorphs obtained by precipitating Al and tartrate at pH 12.0 and at a tartrate/Al molar ratio (R) of 0.1 were studied by X-ray diffraction, transmission electron microscopy and electron diffraction. Co-crystallization of unusually long (up to 18 µm) ‘stick-shaped’ gibbsite with platy particles of both nordstrandite, mainly, and bayerite was observed. Face-to-face associations of plates nucleated perpendicularly on the gibbsite surfaces parallel to the c axis produced peculiar elongated ‘brush’ -shaped particles. In a strongly alkaline environment the inhibiting effect of tartrate on Al(OH)3 polymorph formation is reduced and production of co-crystallized phases with structural crystallographic similarities can be observed.

Keywords

Al(OH)3 PolymorphsAlkaline pHElectron DiffractionMorphologyTartaric AcidTEM
Type
Research Article
Information
Clays and Clay Minerals , Volume 51 , Issue 3 , June 2003 , pp. 350 - 353
Copyright
Copyright © 2003, The Clay Minerals Society

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References

Aldcroft, D. Bye, G.C. and Hughes, C.A., (1969) Crystallization processes in aluminum hydroxide gels. IV. Factors influencing the formation of the crystalline trihydroxides Journal of Applied Chemistry 19 167–172 10.1002/jctb.5010190603.Google Scholar
Brown, G., Brindley, G.W. and Brown, G., (1980) Associated minerals Crystal Structures of Clay Minerals and their X-ray Identification London Mineralogical Society 361 410.Google Scholar
Hsu, P.M., Dixon, J.B. and Weed, S.B., (1989) Aluminum oxides and oxyhydroxides Minerals in Soil Environments Madison, Wisconsin Soil Science Society of America 331 378.Google Scholar
Huang, P.M. Violante, A., Huang, P.M. and Schnitzer, M., (1986) Influence of organic acids on crystallization and surface properties of precipitation products of aluminum Interaction of Soil Minerals with Natural Organics and Microbes Madison, Wisconsin Soil Science Society of America 159 221.Google Scholar
Sposito, G., (1996) The Environmental Chemistry of Aluminum Boca Raton, Florida CRC Lewis Publishers 464 pp.Google Scholar
Tait, J.M. Violante, P. and Violante, A., (1983) Co-crystallization of gibbsite and nordstrandite Clay Minerals 18 95–99 10.1180/claymin.1983.018.1.09.Google Scholar
Violante, A. and Huang, P.M., (1985) Influence of inorganic and organic ligands on the formation of aluminum hydroxides and oxyhydroxides Clays and Clay Minerals 33 181–192 10.1346/CCMN.1985.0330303.Google Scholar
Violante, A. and Huang, P.M., (1993) Formation mechanism of aluminum hydroxide polymorphs Clays and Clay Minerals 41 590–597 10.1346/CCMN.1993.0410509.Google Scholar
Violante, A. and Jackson, M.L., (1979) Crystallization of nordstrandite in citrate systems and in the presence of montmorillonite Amsterdam Elsevier Science Ltd 517 525.Google Scholar
Violante, A. and Jackson, M.L., (1981) Clay influence on the crystallization of Al(OH)3 polymorphs in the presence of citrate, sulfate or chloride Geoderma 25 199–224 10.1016/0016-7061(81)90036-7.Google Scholar
Violante, A. and Violante, P., (1980) Influence of pH, concentration and chelating power of organic anions on the synthesis of aluminum hydroxides and oxyhydroxides Clays and Clay Minerals 28 425–434 10.1346/CCMN.1980.0280604.Google Scholar
Violante, P. Violante, A. and Tait, J.M., (1982) Morphology of nordstrandite Clays and Clay Minerals 30 431–437 10.1346/CCMN.1982.0300605.Google Scholar
Violante, A. Gianfreda, L. and Violante, P., (1993) Effect of prolonged aging on the transformation of short-range ordered aluminum precipitation products formed in the presence of organic and inorganic ligands Clays and Clay Minerals 41 353–359 10.1346/CCMN.1993.0410311.Google Scholar
Violante, A. Krishnamurti, G.S.R. Huang, P.M. et al. and Huang, P.M. (2002) et al. , Impact of organic substances on the formation of metal oxides in soil environments Interactions between Soil Particles and Microorganisms: Impact on the Terrestrial Ecosystems Chichester, UK John Wiley & Sons 133 188.Google Scholar
Wefer, K. and Misra, C. (1987) Oxides and Hydroxides of Aluminum. Alcoa Technical, Paper 19, 97 pp.Google Scholar