Steady progress in methods of synthesis and investigation of physical properties and crystal-chemical features of silicate microporous materials with transition elements (so-called zeolite-like amphoterosilicates) took place during the last decade. Materials of this type are promising ion exchangers, sorbents, catalysts or catalyst carriers and, accordingly, can be used in chromatography, catalysis, water purification, etc. Unlike common zeolites being aluminosilicates, frameworks of amphoterosilicates with transition metals are built of both tetrahedral fragments and “strong” cations (Ti, Nb, Zr, Ta, Sn, W, Fe, Mn, Zn, etc., see Chukanov et al. 2004) with coordination numbers 6 or 5. Structural and chemical diversity...
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