Four morphologies of the nano CuAl₂O₄ hollow microsphere were generated via different synthesis conditions. The results revealed that the morphology, structure and number of the shells of the CuAl₂O₄ product were strongly associated with the carbon template source, concentration of metal salts and hydrothermal processing time. By changing carbon template source, the hollow spheres of CuAl₂O₄ transformed from Yolk shell structure into triple shell hollow spheres. Further investigation also revealed that four types of the sample exhibited a varied catalysis performance for chemical fixation of carbon dioxide to produce cyclic carbonates with the efficiency decreasing from the flower like triple-shelled CuAl₂O₄ hollow spheres to the Yolk shelled CuAl₂O₄ hollow spheres. Various epoxides were converted at 85 °C, 0.3 MPa CO₂ pressure, a catalyst loading of 0.5 mol% and a reaction time of 10 h in a solventless reaction media with isolated yields up to 98 % of the respective carbonate.

纳米CuAl ₂ O ₄空心微球的四种形态是通过不同的合成条件产生的。结果表明，CuAl ₂ O ₄产物的壳的形貌，结构和数量与碳模板来源，金属盐浓度和水热处理时间密切相关。通过改变碳模板来源，CuAl ₂ O ₄的空心球从卵黄壳结构转变为三壳空心球。进一步的研究还表明，四种类型的样品对二氧化碳的化学固定表现出不同的催化性能，从而生成环状碳酸盐，效率从像花的三壳CuAl ₂ O ₄空心球到蛋黄壳的CuAl ₂ O _4降低。空心球。在无溶剂反应介质中，将各种环氧化物在85°C，0.3 MPa CO ₂压力，0.5 mol％的催化剂负载量和10 h的反应时间下转化，分离出的产率最高为相应碳酸盐的98％。