View PDF Version
 
DOI: 10.1039/A703500D (Paper) Reference Section for: J. Mater. Chem., 1997, 7, 1937-1939

Insertion of electrochemically reduced Keggin anions into layered double hydroxides

(Note: The full text of this document is currently only available in the PDF Version )

Ewa M. Serwicka, Paweł Nowak, Krzysztof Bahranowski, William Jones and Fathi Kooli

Abstract

A new procedure is described to enable the charge on a Keggin ion to be modified to improve incorporation into layered double hydroxides. The procedure, involving electrochemical reduction, has been tested using the 12-molybdophosphate anion. Chemical analysis and PXRD data confirm that from the otherwise hydrolytically unstable and low charge anions which are unsuitable for intercalation within the basic matrix of MgAl–LDH, a species is obtained in which the stoichiometry is preserved and which yields a pillared LDH structure of 14.8 Å basal spacing.

References

  1. G. M. Woltermann, US Pat. 4 454 244 to Ashland Oil, 1984 Search PubMed.
  2. T. Kwon, G. A. Tsigdinos and T. J. Pinnavaia, J. Am. Chem. Soc., 1988, 110, 3653 CrossRef CAS.
  3. T. Kwon and T. J. Pinnavaia, Chem. Mater., 1989, 1, 381 CrossRef CAS.
  4. M. A. Drezdzon, Inorg. Chem., 1988, 27, 4628 CrossRef CAS.
  5. K. Chibwe and W. Jones, Chem. Mater., 1989, 1, 489 CrossRef CAS.
  6. E. D. Dimotakis and T. J. Pinnavaia, Inorg. Chem., 1990, 29, 2393 CrossRef CAS.
  7. J. Wang, Y. Tian, R.-C. Wang and A. Clearfield, Chem. Mater., 1992, 4, 1276 CrossRef CAS.
  8. E. Narita, P. Kaviratna and T. J. Pinnavaia, J. Chem. Soc., Chem. Commun., 1993, 60 RSC.
  9. F. Kooli and W. Jones, Inorg. Chem., 1995, 34, 6237 CrossRef CAS.
  10. T. Lopez, P. Bosch, E. Ramos, R. Gomez, O. Novaro, D. Acosta and F. Figueras, Langmuir, 1996, 21, 189 CrossRef CAS.
  11. M. T. Pope, Heteropoly and Isopoly Oxometalates, Springer Verlag, Berlin, Heidelberg, New York, Tokyo, 1984 Search PubMed.
  12. E. Narita, P. Kaviratna and T. J. Pinnavaia, Chem. Lett., 1991, 805 CAS.
  13. X. Zheng and W. Yue, Stud. Surf. Sci. Catal., 1994, 90, 279.
  14. J. D. Wang, G. Serrette, Y. Tian and A. Clearfield, Appl. Clay Sci., 1995, 10, 103 CrossRef.
  15. C. Hu, Q. He, Y. Zhang, Y. Liu, Y. Zhang, T. Tang, J. Zhang and E. Wang, Chem. Commun., 1996, 121 RSC.
  16. S. K. Yun and T. J. Pinnavaia, Inorg. Chem., 1996, 35, 6853 CrossRef.
  17. G. A. Tsigdinos, Top. Curr. Chem., 1978, 76, 1 CAS.
  18. M. A. Ulibarri, F. M. Labajos, V. Rives, R. Trujillano, W. Kagunya and W. Jones, Inorg. Chem., 1994, 33, 2592 CrossRef CAS.
  19. T. Okuhara, N. Mizuno and M. Misono, Adv. Catal., 1996, 41, 113 CAS.