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Effect of Tannate, ph, Sample Preparation, Ageing And Temperature on the Formation and Nature of Al Oxyhydroxides

Published online by Cambridge University Press:  01 January 2024

C. Colombo ,
M. Ricciardella ,
A. Di Cerce ,
L. Maiuro  and
A. Violante
C. Colombo*
Affiliation:
Dipartimento di Scienze Animali, Vegetali e dell’ Ambiente, Università del Molise, Via De Sanctis s/n, 86100 Campobasso (CB), Italy
M. Ricciardella
Affiliation:
Dipartimento di Scienze del Suolo della Pianta e dell’ Ambiente, Università di Napoli Federico II, Via Università, 100, 80055 Portici (NA), Italy
A. Di Cerce
Affiliation:
Dipartimento di Scienze Animali, Vegetali e dell’ Ambiente, Università del Molise, Via De Sanctis s/n, 86100 Campobasso (CB), Italy
L. Maiuro
Affiliation:
Centro Servizi Interdipartimentali di Microscopia, Università del Molise, Via De Sanctis s/n, 86100 Campobasso (CB), Italy
A. Violante
Affiliation:
Dipartimento di Scienze del Suolo della Pianta e dell’ Ambiente, Università di Napoli Federico II, Via Università, 100, 80055 Portici (NA), Italy
*
*E-mail address of corresponding author: colombo@unimol.it
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Abstract

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The aim of this work was to study the influence of tannate concentration (tannic acid/Al molar ratio [R] of 0.01–0.1), pH (5.0 and 8.0), order of aluminum, hydroxyl, and tannate addition, and prolonged ageing at different temperatures (10 months at 50°C and 5 y at room temperature and further ageing for 3–15 days at 140°C) on the nature and crystallinity of synthetic boehmite. Tannate facilitated the formation of boehmite relative to Al(OH)3 polymorphs when coprecipitated with Al and also when added to Al(OH)x phases already formed at pH 4.5 or 8.0. However, the organic ligand was more effective in preventing or perturbing the growth of the crystals of boehmite when coprecipitated with Al than when added to soluble Al(OH)x species or preformed Al precipitates. Boehmite aged at temperatures ⩽50°C typically showed a fibrous morphology. Crystals with a rhombic habit were observed in some treatments after ageing at 140°C. Significant amounts (15–30% C) of tannate were present in the precipitates after prolonged ageing. This tannate was only partly (<50%) oxidized by repeated treatments with H2O2. With further ageing at 140°C, the crystallite size of selected samples increased only slightly, suggesting that much of the remaining tannate was present in the internal structure of these samples and not simply adsorbed to their surfaces. Atomic force microscopy observation showed the presence of globular nanoparticles (probably Al tannate precipitates) attached to the elongated crystals of boehmite. Taken together, our results demonstrate that the crystalline phases that formed under mild conditions in the presence of low concentrations (R = 0.01) of foreign ligands have the same structure as boehmite, but with a poorly ordered and defective ion arrangement. At higher ligand concentrations (R ⩾0.05), mixtures of materials are formed having varying degrees of order, particle size and morphology.

Keywords

Atomic Force MicroscopyBoehmiteCrystallite SizePoorly Ordered MaterialTannic Acid
Type
Research Article
Information
Clays and Clay Minerals , Volume 52 , Issue 6 , December 2004 , pp. 721 - 733
Copyright
Copyright © 2004, The Clay Minerals Society

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.CrossRefGoogle Scholar
Blum, A.E., Nagy, K.L. and Blum, A.E., (1994) Determination of illite/smectite particle morphology using scanning force microscopy Scanning Probe Microscopy of Clay Minerals Boulder, Colorado The Clay Minerals Society 171–202.Google Scholar
Bye, G.C. and Robinson, J.G., (1964) The nature of pseudoboehmite and its role in the crystallization of amorphous aluminum hydroxide Journal of Applied Chemical Biotechnology 24 633–637 10.1002/jctb.5020241104.CrossRefGoogle Scholar
Calvet, E., Boivinet, P., Noel, M., Thidon, H., Maillard, A. and Tertian, R. (1953) Contribution a l’etude des gels d’alumine. Bulletin de la Societé Chimique de France, 99–108.Google Scholar
Colombo, C. Barrón, V. and Torrent, J., (1994) Phosphate adsorption and desorption in relation to morphology and crystal properties of synthetic hematites Geochimica et Cosmochimica Acta 58 1261–1269 10.1016/0016-7037(94)90380-8.CrossRefGoogle Scholar
Digital Instruments, Nanoscope III Command reference manual. Version 3.0 (1993) Santa Barbara, California Digital Instruments.Google Scholar
Hsu, P.H., Dixon, J B and Weed, S.B., (1989) Aluminum hydroxides and oxyhydroxides Minerals in Soil Enviroments 2nd 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 aluminium Interaction of Soil Minerals with Natural Organics and Microbes Madison, Wisconsin Soil Science Society of America 159–221.CrossRefGoogle Scholar
Kawano, M. and Tomita, K., (1996) Amorphous aluminum hydroxide formed at the earliest weathering stages of K-feldspar Clays and Clay Minerals 44 672–676 10.1346/CCMN.1996.0440510.CrossRefGoogle Scholar
Kawano, M. Tomita, K. and Shinohara, Y., (1997) Analytical electron microscopic study of the noncrystalline products formed at early weathering stages of volcanic glass Clays and Clay Minerals 45 440–447 10.1346/CCMN.1997.0450313.CrossRefGoogle Scholar
Kodama, H. and Schnitzer, M., (1980) Effect of fulvic acid on the crystallization of aluminum hydroxides Geoderma 24 195–205 10.1016/0016-7061(80)90023-3.CrossRefGoogle Scholar
Kwong, N.g. Kee, K.F. and Huang, P.M., (1981) Comparison of the influence of tannic acid and selected low molecular weight organic acids on precipitation products of aluminium Geoderma 26 179–193 10.1016/0016-7061(81)90014-8.CrossRefGoogle Scholar
Liu, C. and Huang, P.M., (1999) Atomic force microscopy and surface characteristics of iron oxides formed in citrate solutions Soil Science Society of American Journal 63 65–72 10.2136/sssaj1999.03615995006300010011x.CrossRefGoogle Scholar
Mackenzie, R.C. Follet, E.A.C. Meldau, R. and Gard, J.A., (1971) The oxides of iron, aluminium and manganese The Electron-Optical Investigation of Clays London Mineralogical Society 315–344.CrossRefGoogle Scholar
Ohnesorge, F. and Binning, G., (1993) True atomic resolution by atomic force microscopy through repulsive and attractive forces Science 260 1451–1456 10.1126/science.260.5113.1451.CrossRefGoogle ScholarPubMed
Papee, D., Tertian, R. and Biais, R. (1958) Recherches sur la constitution des gels et des hydrates cristallises d’alumine. Bulletin de la Societé Chimique de France, 1301–1310.Google Scholar
Singer, A. and Huang, P.M., (1990) The effect of humic acid on the crystallization of precipitation products of aluminium Clays and Clay Minerals 38 47–52 10.1346/CCMN.1990.0380106.CrossRefGoogle Scholar
Souza Santos, P. Vallejo-Freire, A. and Souza Santos, H.L., (1953) Electron microscope studies on the aging of amorphous colloid aluminum hydroxide Kolloid Zhurnal 133 101–107 10.1007/BF01513437.CrossRefGoogle Scholar
Tettenhorst, R. and Hofmann, A., (1980) Crystal chemistry of boehmite Clays and Clay Minerals 28 373–380 10.1346/CCMN.1980.0280507.CrossRefGoogle Scholar
Vance, G.F. Stevenson, F.J. Sikora, F.J. and Sposito, G., (1996) Environmental chemistry of aluminum-organic complexes The Environmental Chemistry of Aluminum Boca Raton, Florida CRC Press, Lewis Publishers 169–220.Google Scholar
Violante, A. and Huang, P.M., (1979) 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.CrossRefGoogle Scholar
Violante, A. and Huang, P.M., (1984) Nature and properties of pseudoboehmite formed in the presence of organic and inorganic ligands Soil Science Society of America Journal 48 1193–1201 10.2136/sssaj1984.03615995004800050049x.CrossRefGoogle Scholar
Violante, A. and Huang, P.M., (1985) Influence of inorganic and organic ligands on precipitation products of aluminum Clays and Clay Minerals 33 181–192 10.1346/CCMN.1985.0330303.CrossRefGoogle Scholar
Violante, A. and Huang, P.M., (1989) Influence of oxidation treatments on surface properties and reactivities of short range ordered products of aluminum Soil Science Society of America Journal 53 1402–1407 10.2136/sssaj1989.03615995005300050016x.CrossRefGoogle 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.CrossRefGoogle Scholar
Violante, A. and Huang, P.M., (1994) Identification of pseudoboehmite in mixtures with phyllosilicates Clay Minerals 29 351–359 10.1180/claymin.1994.029.3.06.CrossRefGoogle 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.CrossRefGoogle 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.CrossRefGoogle 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.CrossRefGoogle Scholar
Violante, A. Krishnamurti, G.S.R. Huang, P.M., Huang, P.M. Bollag, J M and Senesi, N., (2002) Impact of organic substances on the formation of metal oxides in soil environments Interactions between Soil Particles and Microorganisms and their Impact on the Terrestrial Environment New York John Wiley & Sons 134–188.Google Scholar
Yoldas, B.E., (1973) Hydrolysis of aluminum alkoxides and bayerite conversion Journal of Applied Chemical Biotechnology 23 803–809 10.1002/jctb.5020231103.CrossRefGoogle Scholar