| 【文章摘要】 The extensive utilisation of zeolite catalysts in contemporary industries has resulted in the generation of considerable quantities of zeolite waste. The recycling of zeolite wastes for the preparation of highly crystalline mullite whiskers remains a significant research challenge. Mullite whiskers are often employed as enhancing the mechanical properties of ceramic matrix composites. In this study, we successfully synthesized mullite whiskers under the catalytic condition of 650 ℃, utilising zeolite waste as the reaction source and MoO3 as the liquid-phase catalyst. The XRD and SEM results indicate that the phase transition direction of the zeolite waste is influenced by the MoO3 content and the sintering temperature. The powder mixture (M8-800), containing 8 wt% MoO3 and subjected to a sintering temperature of 800 ℃, exhibited the highest aspect ratio (22.89 +- 2.31). The synthesis of mullite whiskers via a low-temperature liquid-phase reaction mechanism is demonstrated by TEM experiments. The precursor droplets, comprising the catalyst and glass melt, serve as the initial material for whisker growth. This study proposes a novel and feasible solution for industrial waste recycling. |