Ca-Zn-Al oxide was prepared by co-precipitation method and the effect of preparation conditions on its catalytic performance was investigated. The Ca-Zn-Al oxide exhibited an excellent catalytic activity and stability for one-pot synthesis of dimethyl carbonate (DMC) from urea, 1,2-propylene glycol (PG), and methanol. XRD characterization and activity evaluation results indicated that new crystalline phases Ca₃Al₄ZnO₁₀ and ZnAl₂O₄ could create a synergistic effect with CaO and ZnO, being responsible for the excellent catalytic performance of Ca-Zn-Al oxide. Response surface methodology (RSM) was used to investigate the effect of operating variables and to optimize conditions for the first-step reaction of PG and urea to propylene carbonate. Then the effect of reaction conditions for the transesterification of propylene carbonate with methanol to DMC was also investigated. As a result, a DMC yield of 84.7% was obtained under the appropriate reaction conditions. The Ca-Zn-Al oxide could be reused for four times without a significant change in its catalytic activity.

采用共沉淀法制备了Ca-Zn-Al氧化物，研究了制备条件对其催化性能的影响。Ca-Zn-Al氧化物对于由尿素，1,2-丙二醇（PG）和甲醇一锅法合成碳酸二甲酯（DMC）表现出出色的催化活性和稳定性。XRD表征和活性评估结果表明，新的晶相Ca ₃ Al ₄ ZnO ₁₀和ZnAl ₂ O ₄可以与CaO和ZnO产生协同效应，这是Ca-Zn-Al氧化物优异的催化性能的原因。响应面方法（RSM）用于研究操作变量的影响并优化PG和尿素与碳酸亚丙酯第一步反应的条件。然后还研究了反应条件对碳酸亚丙酯与甲醇进行酯交换为DMC的影响。结果，在适当的反应条件下，DMC的产率为84.7％。Ca-Zn-Al氧化物可以重复使用四次，而其催化活性没有明显变化。