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Properties of Hexacyanocobaltate(III)-Exchanged Hydrotalcite-Like Minerals

Published online by Cambridge University Press:  02 April 2024

Eiichi Suzuki ,
Satoshi Idemura  and
Yoshio Ono
Eiichi Suzuki
Affiliation:
Department of Chemical Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152, Japan
Satoshi Idemura
Affiliation:
Department of Chemical Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152, Japan
Yoshio Ono
Affiliation:
Department of Chemical Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152, Japan
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Abstract

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Hydrotalcite-like minerals, containing Mg2+-Al3+-Xn− (Xn− = NO3−, Cl−, SO42−, or CrO42−), Zn2+-Al3+-NO3−, or Zn2+-Cr3+-NO3− ions, were intercalated with Co(CN)63− by an anion exchange method. For most of the minerals examined, the degree of anion exchange was 79–90%. X-ray powder diffraction patterns of the ion-exchanged samples revealed two peaks at about 8° and 11°2θ (CuKα radiation) attributable to reflections from expanded and non-expanded interlayers, respectively. The intensity of the peak at about 8°2θ was a linear function of the degree of anion exchange. The amount of hexane adsorbed onto the anion-exchanged sample increased linearly with the increase in degree of anion exchange. From these results, anions near the edge of the interlayers appear to have been preferentially replaced by Co(CN)63− at a low degree of anion exchange, whereas those at some distance from the edge were replaced only at a high degree of anion exchange. The adsorption capacity of the Co(CN)63−-exchanged sample for hydrocarbons was: hexane ≃ 2-methylpentane ≫ cyclohexane > methylcyclohexane. The adsorption of chain hydrocarbons and cyclic hydrocarbons was different.

Keywords

AdsorptionAnion exchangeHexacyanocobaltateHydrocarbonsHydrotalciteIntercalation
Type
Research Article
Information
Clays and Clay Minerals , Volume 37 , Issue 2 , April 1989 , pp. 173 - 178
Copyright
Copyright © 1989, The Clay Minerals Society

References

Allmann, R., 1970 Doppelschichtstrukturen mit brucitahn-lichen Schichtionen [Me(II)I-xMe(III)x(OH)2]x+ Chimia 24 99 – 108.Google Scholar
Cavalcanti, F. A. P. Schutz, A., Biloen, P., Delmon, B., Grange, P., Jacobs, P. A. and Poncelet, G., 1987 Interlayer accessibility in layered double-metal hydroxides Preparation of Catalysts IV Amsterdam Elsevier 165 – 174.Google Scholar
Curry, N. A. and Runciman, W. A., 1959 A neutron-diffraction study of potassium cobalticyanide Acta Crystallogr. 12 674 – 678.CrossRefGoogle Scholar
Frondel, C., 1941 Constitution and polymorphism of the pyroaurite and sjögrenite groups Amer. Miner. 26 295 – 315.Google Scholar
Jones, L. H., 1964 Vibrational spectrum and structure of K3Ir(CN)6, K3Rh(CN)6, and K3Co(CN)6 J. Chem. Phys. 41 856 – 863.CrossRefGoogle Scholar
Kikkawa, S. and Koizumi, M., 1982 Ferrocyanide anion-bearing Mg,Al hydroxide Mat. Res. Bull. 17 191 – 198.CrossRefGoogle Scholar
Miyata, S., 1975 The synthesis of hydrotalcite-like compounds and their structures and physico-chemical properties—I. The systems Mg+2-Al3+-N03-, Mg2+-AP+-Cl-, Mg2+-Al3+-C104-, Ni2+-Al3+-Cl-, and Zn+2-Al3+-Cl- Clays & Clay Minerals 23 369 – 375.CrossRefGoogle Scholar
Miyata, S., 1980 Physico-chemical properties of synthetic hydrotalcites in relation to composition Clays & Clay Minerals 28 50 – 56.CrossRefGoogle Scholar
Miyata, S., 1983 Anion-exchange properties of hydrotal-cite-like compounds Clays & Clay Minerals 31 305 – 311.CrossRefGoogle Scholar
Miyata, S. and Kumura, T., 1973 Synthesis of new hydrotalcite-like compounds and their physico-chemical properties Chem. Lett. 843 – 848.CrossRefGoogle Scholar
Miyata, S. and Okada, A., 1977 Synthesis of hydrotalcite-like compounds and their physico-chemical properties— The systems Mg2+-Al3+-SO4 2- and Mg2+-Al3+-CrO,2 Clays & Clay Minerals 25 14 – 18.CrossRefGoogle Scholar
Pinnavaia, T. J., 1983 Intercalated clay catalysts Science 220 365 – 371.CrossRefGoogle ScholarPubMed
Pinnavaia, T. J., Landau, S. D., Tzou, M.-S. and Johnson, I.D., 1985 Layer cross-linking in pillared clays J. A mer. Chem. Soc. 107 7222 – 7224.CrossRefGoogle Scholar
Plee, D., Borg, F., Gatineau, L. and Fripiat, J. J., 1985 High-resolution solid-state 27A1 and 29Si nuclear magnetic resonance study of pillared clays J. Amer. Chem. Soc. 107 2362 – 2369.CrossRefGoogle Scholar
Reichle, W. T., 1985 Catalytic reactions by thermally activated synthetic anionic clay minerals J. Catal. 94 547 – 557.CrossRefGoogle Scholar