THE SYNTHESIS OF THE MOLECULAR-SIEVE CLOVERITE IN THE PRESENCE OF HETEROATOMS

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 sh ow 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 a n isomorphous substitution of phosphorus or gallium by the heteroatoms . Conditions for the storage of detemplated cloverite samples are give n, which avoid amorphization under the influence of moisture.