合成了锆钇柱撑蒙脱土(Zr-Y-MMT)载体,并用于丙酮、甲苯和乙酸乙酯的催化氧化.通过XRD、TEM及N2吸附-脱附技术对Zr-Y-MMT载体和负载Pd催化剂(Pd/Zr-Y-MMT)进了表征.XRD结果显示,经锆钇柱撑后蒙脱土的层间距由1.27 nm增大至1.78 nm;N2吸脱附结果表明.经锆钇柱撑后,其比表面积有了很大的增加,由62 m2·g-1增大至395 m2·g-1.活性评价结果发现,Zr-Y-MMT载体比Na-MMT有更好的催化活性,其完全氧化丙酮、甲苯和乙酸乙酯的温度分别为320℃、350℃和290℃.此外.当此载体上负载0.1wt%Pd时,其用于完全氧化甲苯的活性有了明显的改进.%A montmorillonite support material pillared with zirconium and yttrium (Zr-Y-MMT) was prepared for catalytic oxidation of acetone, toluene and ethyl acetate. The Zr-Y-MMT support and the supported Pd catalyst (Pd/Zr-Y-MMT) were characterized by XRD, TEM and low temperature nitrogen adsorption-desorption techniques. The XRD results indicate that the interlayer spacing of the montmorillonite is increased from 1.27 nm to 1,78 nm after zirconium and yttrium cation pillaring. N2 adsorption-desorption results show that a great increase in BET found that Zr-Y-MMT is more active than Na-MMT for the complete oxidation of acetone, toluene and ethyl acetate, and the temperature for the said catalytic oxidation can be lowered to 320 ℃, 350 ℃ and 290 ℃,respectively. Moreover, after 0.1wt% Pd was supported on Zr-Y-MMT, the catalytic activity was obviously improved for toluene combustion.
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