Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-28T14:22:08.257Z Has data issue: false hasContentIssue false
  • English
  • Français

Preparation of Delaminated Clay Having a Narrow Micropore Distribution in the Presence of Hydroxyaluminum Cations and Polyvinyl Alcohol

Published online by Cambridge University Press:  02 April 2024

Kenzi Suzuki ,
Toshiaki Mori ,
Kaoru Kawase ,
Hiroshi Sakami  and
Shozo Iida
Kenzi Suzuki
Affiliation:
Government Industrial Research Institute, Nagoya Hirate-cho, Kita-ku, Nagoya 462, Japan
Toshiaki Mori
Affiliation:
Government Industrial Research Institute, Nagoya Hirate-cho, Kita-ku, Nagoya 462, Japan
Kaoru Kawase
Affiliation:
Government Industrial Research Institute, Nagoya Hirate-cho, Kita-ku, Nagoya 462, Japan
Hiroshi Sakami
Affiliation:
Government Industrial Research Institute, Nagoya Hirate-cho, Kita-ku, Nagoya 462, Japan
Shozo Iida
Affiliation:
Government Industrial Research Institute, Nagoya Hirate-cho, Kita-ku, Nagoya 462, Japan
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The pillaring of Na-montmorillonite with cationic oligomers of hydroxyaluminum (COHA) in the presence of an aqueous solution of polyvinyl alcohol resulted in the formation of a clay having a large surface area and pore volume. The pore-size distribution determined from a N2 adsorption/desorption hysteresis was narrow and centered at about 25 Å. The peak width at half height in the distribution curve was < 5 Å. As a result of delamination, the layer structure of the prepared clay was found from X-ray powder diffraction measurements to be lost. Short-range ordering, however, still existed in this delaminated clay, because exchangeable cations in the montmorillonite completely exchanged with Al3+, a requisite step for pillaring.

The order of adding the starting materials (Na-montmorillonite, polyvinyl alcohol, and COHA) greatly affected the surface area and the pore volume of the delaminated clay. Two orders of addition (Namontmorillonite, then COHA, then polyvinyl alcohol; and COHA, then Na-montmorillonite, then polyvinyl alcohol) gave no measurable surface area and pore volume. Two other orders of addition (polyvinyl alcohol, then COHA, then Na-montmorillonite; and polyvinyl alcohol, then Na-montmorillonite, then COHA) gave surface areas of 107 and 160 m2/g and pore volumes of 0.13 and 0.29 cm3/g, respectively. The amounts of the COHA solution and polyvinyl alcohol added greatly influenced the surface area and pore volume of the delaminated clay. Both properties increased monotonically with increasing amount of added polyvinyl alcohol, and increased to a maximum and then decreased with increasing amount of added COHA solution. The maximum surface area of the prepared delaminated clay was 330 m2/g.

Keywords

Delaminated clayHydroxy aluminumMontmorilloniteOrderingPillaringPolyvinyl alcoholPore sizeSurface area
Type
Research Article
Information
Clays and Clay Minerals , Volume 36 , Issue 2 , April 1988 , pp. 147 - 152
Copyright
Copyright © 1988, The Clay Minerals Society

References

Brindley, G. W. and Kao, C.-C., 1980 Formations, compositions, and properties of hydroxy-Al- and hydroxy-Mg-montmorillonite Clays & Clay Minerals 28 435 – 443.CrossRefGoogle Scholar
Brindley, G. W. and Sempels, R. E., 1977 Preparation and properties of some hydroxy-aluminum beidellites Clay Miner. 12 229 – 236.CrossRefGoogle Scholar
Cranston, R. W. and Inkley, F. A., 1957 The determination of pore structures for nitrogen adsorption isotherms Adv. Catalysis 9 143 – 154.Google Scholar
Innes, W. B., 1957 Use of a parallel plate model in calculation of pore size determination Anal. Chem. 29 1069 – 1073.CrossRefGoogle Scholar
Johansson, O., 1960 On the crystal structures of some basic aluminium salts Acta Chem. Scand. 14 771 – 773.CrossRefGoogle Scholar
Kunimine Industries Co., Ltd., 1978 Catalogue of high purity Na-montmorillonite Tokyo KUNIPIA-F 4.Google Scholar
Lahav, N., Shani, U. and Shabtai, J., 1978 Cross-linked smectites. I. Synthesis and properties of hydroxy-aluminum-montmorillonite Clays & Clay Minerals 26 107 – 115.CrossRefGoogle Scholar
Muha, J. M. and Vaughan, Ph A, 1960 Structure of the complex ion in aqueous solutions of zirconyl and hafnyl oxyhalides J. Chem. Phys. 33 194 – 199.CrossRefGoogle Scholar
Occelli, M. L. and Finseth, D. H., 1986 Preparation and characterization of pillared hectorite catalysts J. Catal. 99 316 – 326.CrossRefGoogle Scholar
Occelli, M. L., Landau, S. D. and Pinnavaia, T. J., 1984 Cracking selectivity of a delaminated clay catalyst J. Catal. 90 256 – 260.CrossRefGoogle Scholar
Occelli, M. L. and Tindwa, R. M., 1983 Physicochemical properties of montmorillonite interlayered with cationic oxyaluminum pillars Clays & Clay Minerals 31 22 – 28.CrossRefGoogle Scholar
Pinnavaia, T. J., Tzou, M.-S. Landau, S. D. and Raythatha, B. H., 1984 On the pillaring and delamination of smectite clay catalysts by polyoxo cations of aluminum J. Mol. Catal. 27 195 – 212.CrossRefGoogle Scholar
Pinnavaia, T. J., Tzou, M.-S. and Landau, S. D., 1985 New chromia-pillared clay catalysts J. Amer. Chem. Soc. 107 4785 – 4786.CrossRefGoogle Scholar
Shabtai, J., Rosell, M. and Tokarz, M., 1984 Cross-linked smectites. III. Synthesis and properties of hydroxy-aluminum hectorites and fluorhectorites Clays & Clay Minerals 32 99 – 107.CrossRefGoogle Scholar
Taki Chemical Company, 1974 Product and technical data sheet Japan Kakogawa.Google Scholar
Vaughan, D. E. W. Lussier, R. J. and Rees, L. V. C., 1980 Preparation of molecular sieves based on pillared interlayered clay (PILC) Proc. 5th Internat. Conf. Zeolites, Naples, 1980 London Heyden 94 – 101.Google Scholar
Yamanaka, S. and Brindley, G. W., 1978 Hydroxy-nickel interlayering in montmorillonite by titration method Clays & Clay Minerals 26 21 – 24.CrossRefGoogle Scholar
Yamanaka, S. and Brindley, G. W., 1979 High surface area solids obtained by reaction of montmorillonite with zirconyl chloride Clays & Clay Minerals 27 119 – 124.CrossRefGoogle Scholar