Abstract
The effect of drying of VOPO4⋅2H2O on the preparation of vanadium phosphate catalysts for the selective oxidation of n-butane to maleic anhydride is described and discussed. It is found that partially dehydrated samples of the dihydrate containing small amounts of αI-VOPO4 are formed when the material is initially dried. The presence of this impurity leads to a final catalyst containing trace amounts of αI-VOPO4 in combination with (VO)2P2O7 and this combination leads to a catalyst with a higher activity but with a lower selectivity to maleic anhydride. The drying stage is also found to influence the surface area and intrinsic activity of the activated catalyst.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G. Centi, Forum on Vanadium Pyrophosphate Catalyst, Catal. Today 16 (1994).
E. Bordes, Catal. Today 1 (1987) 499.
G.J. Hutchings, Appl. Catal. 72 (1992) 1.
G.J. Hutchings, A. Desmartin-Chomel, R. Olier and J.C. Volta, Nature 368 (1994) 41.
C.J. Kiely, A. Burrows, G.J. Hutchings, K.E. Bere, J.C. Volta, A. Tuel and M. Abon, Faraday Discuss. 105 (1996) 103.
G.W. Coulston, S.R. Bare, H. Kung, K. Birkeland, G.K. Bethke, R. Harlow, N. Herron and P.L. Lee, Science 275 (1997) 191.
J.T. Gleaves, J.R. Ebner and T.C. Kuechler, Catal. Rev. Sci. Eng. 30 (1988) 49.
G. Centi, Catal. Today 16 (1994) 1.
J.W. Johnson, D.C. Johnston, A.J. Jacobson and J.F. Brody, J. Am. Chem. Soc. 106 (1984) 8123.
M.T. Sananes, I.J. Ellison, S. Sajip, A. Burrows, C.J. Kiely, J.C. Volta and G.J. Hutchings, J. Chem. Soc. Faraday Trans. 92 (1996) 137.
F.B. Abdelouhab, R. Olier, N. Guilhaume, F. Lefebvre and J.C. Volta, J. Catal. 134 (1992) 157.
M.T. Sananes-Schulz, F.B. Abdelouahab, G.J. Hutchings and J.C. Volta, J. Catal. 163 (1996) 346.
M. Tachez, F. Theobald and E. Bordes, J. Solid State Chem. 40 (1981) 280.
C. R'kha, M.T. Vandenborre, J. Livage, R. Prost and E. Huard, J. Solid State Chem. 63 (1986) 202.
M. Tachez, F. Theobald, J. Bernard and A.W. Hewat, Rev. Chim. Miner. 19 (1982) 291.
F.B. Abdelouahab, J.C. Volta and R. Oliver, J. Catal. 148 (1994) 334.
V. Martin, J.M.M. Millet and J.C. Volta, J. Thermal Anal. 53 (1998) 111.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cabello Sanchez, F.J., Lopez-Sanchez, J.A., Wells, R.P. et al. Effect of Dehydration of VOPO4⋅2H2O on the Preparation and Reactivity of Vanadium Phosphate Catalyst for the Oxidation of n-Butane. Catalysis Letters 77, 189–192 (2001). https://doi.org/10.1023/A:1013261219256
Issue Date:
DOI: https://doi.org/10.1023/A:1013261219256