In a novel LiCl/FER zeolite guest/host material prepared by assemble of the guest LiCl into the channels of host FER zeolites with thermal dispersion method, an interaction between the guest and the host occurred upon elevating the temperature, thus inducing a phase transformation of the complex material. By characterization via XRD, FTIR and TG/DTA/DTG, the process of phase transformation was proved to commence at the temperature of 500 ℃ with the production of LiAlSi₃O_8. With further elevating the temperature, β-quartz emerged at the temperature of 800 ℃ as the primary product in the process of phase transformation, the relative content of which was increased with decreasing the loadings of LiCl of the guest/host materials.

Key words: FER zeolite, LiCl, guest/host interaction, phase transformation, LiAlSi₃O₈, β-quartz