Thermal decomposition of Mg/Al and Mg/Ga layered-double hydroxides: a spectroscopic study

Abstract

An Mg/Al and a Mg/Ga layered double hydroxide (LDH) were synthesized by using the coprecipitation method and calcined at a variety of temperatures. The starting LDHs and their calcination products (mixtures of oxides and spinels) were characterized by X-ray diffraction, solid-state NMR and IR spectroscopies and thermogravimetric analysis. Based on the results, the LDHs studied possess a brucite-like structure where tervalent cations occupy octahedral positions. At moderate temperatures, calcination gives a mixture of oxides; at high temperatures, however, the corresponding spinels are obtained.

References

1. F. Cavani, F. Trifirò and A. Vaccari, Catal. Today, 1991, 11, 173.
2. A. Corma, V. Fornés and F. Rey, J. Catal., 1994, 148, 205.
3. M. J. Climent, A. Corma, S. Iborra and J. Primo, J. Catal., 1994, 151, 215.
4. P. Courty and G. Marcilly, Stud. Surf. Sci. Catal., 1983, 16, 485.
5. F. Medina, D. Tichit, B. Coq, A. Vaccari and N. T. Dung, J. Catal., 1997, 167, 142.
6. M. Quian and H. C. Zeng, J. Mater. Chem., 1997, 7, 493.
7. G. Centi, A. Galli, B. Montanari, S. Perathoner and A. Vaccari, Catal. Today, 1997, 35, 117.
8. M. A. Aramendia, V. Borau, C. Jiménez, J. M. Marinas and J. R. Ruiz, Solid State NMR, 1997, 8, 251.
9. M. A. Aramendía, V. Borau, C. Jiménez, J. M. Marinas, F. J. Romero and J. R. Ruiz, J. Solid State Chem., 1998, 135, 96.
10. M. A. Aramendía, V. Borau, C. Jiménez, J. M. Marinas, F. J. Romero and J. R. Ruiz, J. Colloid Interface Sci., 1998, 202, 456.
11. M. A. Aramendía, Y. Avilés, V. Borau, C. Jiménez, J. M. Marinas, A. Moreno and J. R. Ruiz, React. Kinet. Catal. Lett., 1998, 65, 207.
12. V. R. Choudhary, A. K. Kinage, C. Sivadinarayana, P. Devadas, S. D. Sansare and M. Guisnet, J. Catal., 1996, 158, 34.
13. C.-F. Cheng, H. He, W. Zhou, J. Klinowski, J. A. Sousa Goncalves and L. F. Gladen, J. Phys. Chem., 1996, 100, 390.
14. K. J. Chao, S. P. Sehn, L.-H. Lin, M. J. Genet and J. H. Feng, Zeolites, 1997, 18, 18.
15. S. Brunauer, P. H. Emmet and E. J. Teller, J. Am. Chem. Soc., 1951, 60, 73.
16. J. W. Akitt, Annu. Rep. Spectrosc. A, 1972, 9, 465.
17. W. T. Reichle, S. Y. Kang and D. S. Everhardt, J. Catal., 1986, 101, 352.
18. A. De Roy, C. Forano, K. El Malki and J.-P. Besse, in Synthesis of Microporous Materials, ed. M. L. Occelli and H. E. Robson, Van Nostrand Reinhold, New York, 1992, vol. 2, ch. 7.
19. E. C. Kruissink, L. L. Van Reijen and J. R. H. Ross, J. Chem. Soc., Faraday Trans. 1, 1981, 77, 649.
20. F. Medina, R. Dutartre, D. Tichit, B. Coq, N. T. Dung, P. Salagre and J. E. Sueiras, J. Mol. Catal. A: Chem., 1997, 119, 201.
21. M. A. Ulibarri, F. M. Labajos, V. Rives, R. Trujillano, W. Kagunya and W. Jones, Inorg. Chem., 1994, 33, 2592.
22. O. Clause, M. Gazzano, F. Trifiro, A. Vaccari and L. Zatorski, Appl. Catal., 1991, 73, 217.
23. R. H. Meinhold, R. C. T. Slade and R. H. Newman, Appl. Magn. Reson., 1992, 45, 263.
24. R. C. T. Slade, J. C. Southern and I. M. Thompson, J. Mater. Chem., 1991, 1, 563.
25. M. A. Aramendía, V. Borau, C. Jiménez, J. M. Marinas, F. J. Romero and J. R. Ruiz, J. Solid State Chem., 1997, 131, 78.
26. G. Allegra and G. Ronca, Acta Crystallogr., Sect. A, 1978, 34, 1006.
27. D. Roy, R. Roy and E. Osborn, Am. J. Sci., 1953, 251, 337.
28. F. Munpton, H. Jaffe and C. Thompson, Am. Miner., 1965, 50, 1893.
29. R. Allmann, Chimia, 1970, 24, 99.
30. D. L. Bish, Program and Abstracts, 6th International Clay Conference, Oxford, 1978.
31. M. J. Hernández-Moreno, M. A. Ulibarri, J. L. Rendon and C. J. Serna, Phys. Chem. Miner., 1985, 12, 34.
32. L. Mirkin, Rentgenostructurnii Analiz-Inducirovanic Poroshkovih Rentgenogramm, Nakua, Moskow, 1981.
33. H. Miyata, W. Wakamiya and I. Kibokawa, J. Catal., 1974, 34, 117.
34. J. Lercher, C. Colombier, H. Vinec and H. Noller, in Catalysis by Acids and Bases, ed. B. Imelik, C. Maccache, G. Cardurier, Y. Ben Taarit and J. C. Vedrine, Elsevier, Amsterdam, 1985, p. 25.
35. P. Tarte, Proceedings of the International Conference on Physics of Non-Crystalline Solids, London, 1965, p. 549.
36. Y. Takita and J. Lunsford, J. Phys. Chem., 1979, 83, 683.
37. M. A. Aramendía, V. Borau, C. Jiménez, J. M. Marinas, F. J. Romero, J. Navio and J. Barrios, J. Catal., 1995, 157, 97.
38. K. Nakamoto, Infrared and Raman Spectra of Inorganic Compounds, Wiley, New York, 4th edn., 1986, p. 139.
39. K. J. D. Mackenzie, R. H. Meinhold, B. L. Sheriff and Z. Xu, J. Mater. Chem., 1993, 3, 1263.
40. J. Rabo, Zeolite Chemistry and Catalysis, ACS Monograph, Washington DC, 1976, part 1.
41. H. Imai, T. Takagawa and N. Kamide, J. Catal., 1987, 106, 394.