Abstract
The topotactic thermal decomposition of a synthetic acicular goethite sample into hematite has been studied by controlled rate thermal analysis (CRTA). This method allows a precise, simultaneous and independent control of both the partial pressure of water vapour generated from the decomposition of goethite and the decomposition rate of this precursor. It has been demonstrated that the CRTA method allows obtaining acicular particles of α‐Fe2O3 with tailored porosity oriented along the c lattice axis (the longest axis of the particle). This finding would be of great potential interest from the point of view of the use of this material as a catalyst.
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References
A. Brown, J. Hargreaves and B. Rijniersce, Catal. Lett. 53 (1998) 7.
H. Randall, R. Doepper and A. Renken, Ind. Eng. Chem. Res. 36 (1997) 2996.
R.M. Cornell and U. Schwertmann, The Iron Oxides: Structure, Properties, Reactions, Occurence and Uses (VCH, Weinheim, 1996).
J. Zhao, F. Huggins, Z. Feng, F. Lu, N. Shah and G. Huffman, J. Catal. 143 (1993) 499.
J. Zhao, Z. Feng, F. Huggins and G. Huffman, Energy Fuels 8 (1994) 1152.
Z. Feng, J. Zhao, F. Huggins and G. Huffman, J. Catal. 143 (1993) 510.
H. Naono and R. Fujiwara, J. Colloid Interface Sci. 73 (1980) 406.
H. Naono, K. Nakai, T. Sueyoshi and H. Yagi, J. Colloid Interface Sci. 120 (1987) 439.
M. Pelino, L. Toro, M. Petroni, A. Florindi and C. Cantalini, J. Mater. Sci. 24 (1989) 409.
J.L. Rendon, J. Cornejo, P. De Arambarri and C.J. Serna, J. Colloid Interface Sci. 92 (1983) 508.
P.F. Rossi, G. Caracciolo and G. Busca, Colloids Surf. 32 (1988) 75.
S. Hirokawa, T. Naito and T. Yamaguchi, J. Colloid Interface Sci. 112 (1986) 268.
E. Badens, P. Llewellyn, J.M. Fulconis, C. Jourdan, S. Veesler, R. Boistelle and F. Rouquerol, J. Solid State Chem. 139 (1998) 37.
M.D. Alcala, F.J. Gotor, L.A. Pérez-Maqueda, C. Real, M.J. Diánez and J.M. Criado, J. Therm. Anal. (1999), in press.
J.M. Criado, F.J. Gotor, C. Real, F. Jiménez, S. Ramos and J. Del Cerro, Ferroelectrics 114 (1991) 43.
J. Rouquerol and M. Granteaume, J. Therm. Anal. 11 (1977) 201.
J. Rouquerol, F. Rouquerol and M. Ganteaume, J. Catal. 36 (1975) 99.
J. Rouquerol, Thermochim. Acta 300 (1997) 247.
S. Bordere, A. Floreancig, F. Rouquerol and J. Rouquerol, Solid State Ionics 63–35 (1993) 229.
P. Duvigneud and R. Derie, J. Solid State Chem. 34 (1980) 323.
L. Volpe and M. Bougart, Catal. Rev. Sci. Eng. 27 (1985) 515.
G.W. van Oosterhout, Acta Crystallogr. 13 (1960) 932.
G.S. Chopra, C. Real, M.D. Alcalá, L.A. Pérez-Maqueda, J. Subrt and J.M. Criado, Chem. Mater. (1999), in press.
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Pérez‐Maqueda, L., Criado, J., Subrt, J. et al. Synthesis of acicular hematite catalysts with tailored porosity. Catalysis Letters 60, 151–156 (1999). https://doi.org/10.1023/A:1019063109020
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DOI: https://doi.org/10.1023/A:1019063109020