The Synthesis of the Molecular Sieve Cloverite in the Presence of Heteroatoms

Abstract

Various cloverite samples containing a series of heteroatoms have been synthesized at optimized HF : Ga₂O₃ ratios and characterized by XRD, adsorption measurements, infrared and ESR spectroscopy. The results show that the pure cloverite structure is only formed in the presence of Ti, Si, Zn, and Mg ions. However, no real evidence can be given for an isomorphous substitution of phosphorus or gallium by the heteroatoms. Conditions for the storage of detemplated cloverite samples are given, which avoid amorphization under the influence of moisture.