Abstract
Crystalline zirconium phosphates are potentially interesting as catalysts, since certain forms possess regular layer structures within which are strongly acidic sites which may undergo ion exchange with a range of metal cations. The ion exchange properties of zirconium phosphates were recognised in the 1950’s1,2,3: however, the initial preparations were amorphous gels of variable composition and it was not until 19644 that zirconium phosphate was isolated in its crystalline form. Following on from this, other Group IV phosphates were then made in their crystalline forms. The phosphates have the general formula M (HPO4)2.H2O and possess a layer structure (Figure 1).
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Johnstone, A., Middleton, P.J., Wasson, R.C., Johnstone, R.A.W., Pires, P.J.C., Rocha, G.O. (1993). Metal Phosphates: New Vistas for Catalysed Oxidations with Hydrogen Peroxide. In: Barton, D.H.R., Martell, A.E., Sawyer, D.T. (eds) The Activation of Dioxygen and Homogeneous Catalytic Oxidation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3000-8_4
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DOI: https://doi.org/10.1007/978-1-4615-3000-8_4
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