以氨水、氧氯化锆和硝酸钕为原料,用共沉淀法制得稀土复合型固体超强酸SO24-/ZrO2-Nd2O3(以下简称SZN)。用IR,XRD对其进行了表征,将其用于催化乙酸和甘油的酯化反应检验其催化活性,于空气中放置检验其稳定性。结果表明,低温陈化和加入一定比例的钕,可使超强酸酸性增强,并能使亚稳态的ZrO2四方晶相在较宽的温度范围内不发生相转变,这些是SZN样品催化活性较高的微观原因。 With ammonia, zirconium oxychloride and neodymium nitrate as raw materials, the rare earth composite solid superacid SO24- / ZrO2-Nd2O3 (hereinafter referred to as SZN) was prepared by co-precipitation method. Its properties were characterized by IR and XRD. It was used to catalyze the esterification of acetic acid and glycerol to test its catalytic activity and placed in air to test its stability. The results show that aging at low temperature and adding a certain proportion of neodymium can enhance the acidity of the superacid and make the metastable ZrO2 tetragonal phase do not undergo phase transformation over a wide temperature range. These are the catalytic activity of the SZN sample High micro-reasons.