Ni-Al hydrotalcite compounds with the structural formula [Ni1−x Al x (OH)2]x+ [(CO3) x/2 ·mH2O]x− were synthesized in the composition range Al/Ni+Al (x)=0.20–0.50 by sequential precipitation. The samples were characterized by X-ray diffraction, infrared absorption, thermogravimetry-differential scanning calorimetry-evolved gas analysis, transmission electron microscopy and BET surface-area measurements. The crystallinity and the lattice parameters of the samples are significantly affected with respect to composition. Hydrothermal treatments performed on the aged samples enhanced the crystallinity. The nitrate ion is also present along with carbonate ion as the charge-balancing anion in the interlayer space. The thermal stability of these materials increased with decrease in Ni/Al atomic ratio. Thermal calcination of these compounds yielded non-stoichiometric NiO whose crystallinity and thermal stability depends on the composition as well as on calcination temperature.
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F. Cavani, F. Trifiro andA. Vaccari,Catal. Today 11 (1991) 173.
W. Reichle,CHEMTECH 16 (1986) 58.
C. S. Swamy, S. Kannan andS. Velu, in “2nd ANAIC International Conference on Material Science and Environmental Chemistry of Main Group Elements”, Kaula Lumpur, Malaysia, 8–11 November (1993) in press.
S. Kannan andC. S. Swamy,J. Mater. Sci. Lett. 11 (1992) 1585.
Idem, Appl. Catal. B 3 (1994) 109.
S. Kannan, S. Velu, V. Ramkumar andC. S. Swamy,J. Mater. Sci. 30 (1995) 1462.
S. Velu andC. S. Swamy,Appl. Catal. 119 (1994) 241.
O. Clause, B. Rebours, E. Merlen, F. Trifiro andA. Vaccari,J. Catal. 133 (1992) 231.
S. Kannan andC. S. Swamy, “Preparation of catalysts VI”, in Studies in Surface Science and Catalysis (Vol. 91), edited by G. Poncelet, J. Martens, B. Delmon, P. A. Jacobs and P. Grange (Elsevier, Amsterdam, 1995) p. 903.
H. Schaper, J. J. Berg-Slot andW. H. J. Stork,Appl. Catal. 54 (1989) 79.
S. Miyata,Clays Clay Miner. 23 (1975) 369.
F. M. Labajos, V. Rives andM. A. Ulibarri,J. Mater. Sci. 27 (1992) 1546.
D. L. Bish andG. W. Brindley,Am. Mineral 62 (1977) 458.
B. Rebours, J-B D'Espinose De La Caillerie andO. Clause,J. Am. Chem. Soc. 116 (1994) 1707.
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Kannan, S., Narayanan, A. & Swamy, C.S. Effect of composition on the physicochemical properties of nickel aluminium hydrotalcites. J Mater Sci 31, 2353–2360 (1996). https://doi.org/10.1007/BF01152946
- Calcination Temperature
- Hydrothermal Treatment
- Interlayer Space
- Infrared Absorption