中文摘要：

采用以聚乙二醇（PEG）为表面活性剂的水热法合成了不同Tb/Zr比的TbxZr1-工O2-δ复合氧化物,并用以十六烷基三甲基溴化铵（CTAB）为表面活性剂的共沉淀法合成了Tb0.6 Zr0.4 O2-δ,将其作为不同方法的比较.利用XRD、TG-DTA、HRTEM、SAED和N2吸附-脱附对样品的物相结构、高温热稳定性、样品形貌、晶粒大小及孔结构进行表征.结果表明,当n（Tb）/n（Zr）≥0.6时样品呈现出氧化铽的立方晶体结构,合成的Tb0.6 Zr0.4 O2-PEG的表面形貌为不规则的类球状纳米粒子,粒径为5nm左右,产物的孔径主要集中在7.2nm左右.HRTEM图中明显显示出其晶体中的（111）及（200）晶面.TG-DTA曲线显示温度高于500℃时失重不明显,表明焙烧后的铽锆固溶体具有良好的热稳定性.

英文摘要：

Composite oxides TbxZr1-xO2-δ with different Tb/Zr ratio were synthesized successfully by hydro- thermal method using PEG as surface active agent, and Tb0.6 Zr0.4 O2-δ was synthesized by using the method of precipi- tation with CTAB as surfaetant. To compare the difference between the two methods, the crystal phase structure, thermal stability, morphology, partical size, and crystalline state of the samples were characterized by means of XRD, TG-DTA, TEM and SAED. Results showed that the samples presented terbium oxide cubic crystal structure when the n（Tb）/n（Zr）≥0. 6. The surface morphology of Tb0. 6 Zr0. 4 O2-PEG was irregular spherical nanoparticles with a particle size of 5 nm. The pore diameters of the product were mainly concentrated in about 7.2 nm, and the （111） and （200） planes can be obviously displayed in its HRTEM figures. TG-DTA curves showed that the weight loss was not obvious above 500 ℃, which made it clear that roasted terbium zirconium solid solution possessed good thermal stability.