Cadmium ion exchange in zeolite Y by chemical vapour deposition and reaction

Abstract

Cadmium ions have been introduced in extra-framework positions of zeolite Y by vapour deposition of cadmium metal in HY and subsequent redox reaction. The samples so-obtained have been investigated with carbon monoxide and xenon adsorption as well as with¹²⁹Xe NMR spectroscopy. Unusual distributions of the Cd²⁺ ions with preference for the low oxygen-coordinated S III sites in the supercages were detected. A subsequent rehydration/dehydration cycle leaves the sample with a Cd²⁺ distribution similar to zeolites obtained by conventional aqueous ion exchange.

References

1. D. W. Breck, in Zeolite Molecular Sieves, John Wiley & Sons, New York, 1974, p. 529.
2. A. Dyer, in An Introduction to Zeolite Molecular Sieves, John Wiley & Sons, Chichester, 1988, p. 63.
3. Y.-Ch. Xie and Y.-Q. Tang, Adv. Catal., 1990, 37, 1.
4. H. G. Karge, Stud. Surf. Sci. Catal., 1997, 105, 1901.
5. P. B. Peapples-Montgomery and K. Seff, J. Phys. Chem., 1992, 96, 5962.
6. A. Seidel and B. Boddenberg, Chem. Phys. Lett., 1996, 249, 117.
7. Thermochemical Properties of Inorganic Substances II, ed. O. Knacke, O. Kubaschewski and K. Hesselmann, Springer, Berlin, 1991, p. 407.
8. B. Boddenberg and T. Sprang, J. Chem. Soc., Faraday Trans., 1995, 91, 163.
9. M. Wark, H.-J. Schwenn, M. Warnken, N. I. Jaeger and B. Boddenberg, Stud. Surf. Sci. Catal., 1995, 97, 205.
10. T. Sprang and B. Boddenberg, Appl. Magn. Reson., 1995, 8, 415.
11. S. Vasireddy, K. W. Street and H. B. Mark Jr., Anal. Chem., 1981, 53, 868.
12. R. A. Potts, R. D. Barnes and J. D. Corbett, Inorg. Chem., 1968, 7, 2558.
13. J. D. Corbett, Prog. Inorg. Chem., 1976, 21, 135.
14. S. B. Jang, J. H. Kwon, S. H. Song, Y. Kim and K. Seff, Stud. Surf. Sci. Catal., 1997, 105, 1819.
15. C. J. Jameson, A. K. Jameson and S. M. Cohen, J. Chem. Phys., 1970, 53, 2310.
16. T. Ito and J. Fraissard, J. Chem. Phys., 1982, 76, 5225.
17. B. Boddenberg and A. Seidel, J. Chem. Soc., Faraday Trans., 1994, 90, 1345.
18. J. Fraissard and T. Ito, Zeolites, 1988, 8, 350.
19. E. Dempsey and D. H. Olson, J. Phys. Chem., 1970, 74, 305.
20. V. Bosáček, S. Beran and Z. Jirák, J. Phys. Chem., 1981, 85, 3856.
21. L. B. McCusker and K. Seff, J. Am. Chem. Soc., 1979, 101, 5235.
22. S. B. Jang, U. S. Kim, Y. Kim and K. Seff, J. Phys. Chem., 1994, 98, 3796.
23. A. Freitag, Ch. van Wüllen and V. Staemmler, J. Chem. Phys., 1995, 192, 267.
24. I. E. Maxwell, Adv. Catal., 1982, 31, 1.