Abstract: Zr-pillared montmorillonites (Zr-PILM) were prepared by irradiation with ultrasonic wave with montmorillonite as raw material and zirconium oxychloride as Zr source of pillaring agent. The properties of the Zr-pillared montmorillonites were characterized by XRD，BET，FTIR，SEM and Py-IR. The effects of synthesis conditions on the structures of Zr-PILM were investigated. The results indicated that Zr-PILM retained complete layered and flaked structure，and its interlayer spacing and BET surface increased. The acid strength of B and L acids of Zr-PILM reduced，which are more appropriate for the catalytic reaction of MTO. The Zr-PILM synthesized by ultrasonic irradiation exhibited excellent catalytic activity for MTO reaction. The methanol conversion reached 94.4 % and the selectivity of total light olefins in MTO reaction was 73.9%，under the condition of volumetric space velocity 1.2 h－1 and reaction temperature 360℃

Key words: Zr-pillared montmorillonite, ultrasonic, methanol-to-olefins (MTO), catalytic activity, characterization

摘要： 在超声波作用下，以钠基膨润土为原料、ZrOCl2?8H2O为锆源，制备了锆基柱撑膨润土（Zr-PILM）。结合XRD、BET、FTIR、SEM、吡啶吸附IR光谱等技术对柱撑膨润土进行表征，结果表明：Zr-PILM颗粒保留了较完整的层状和片状结构，层间距和比表面积增加。Zr-PILM的B酸和L酸总量都减少，形成了适宜催化甲醇制低碳烯烃反应的酸位点。超声法制备Zr-PILM用于甲醇制烯烃催化反应，在体积空速1.2 h－1、反应温度360 ℃时，甲醇的转化率达94.4%，低碳烯烃总选择性达到73.9%。

关键词: 锆基柱撑膨润土, 超声, 甲醇制低碳烯烃, 催化性能, 表征