以丙烯酸和十八碳醇为原料,采用固体超强酸SO42-/TiO2为催化剂及直接酯化法制备丙烯酸十八酯.研究了丙烯酸与十八醇的摩尔比、催化剂和阻聚剂的质量分数、反应温度及反应时间对反应的影响,并用红外光谱对产物进行了表征.由实验得出的最佳合成条件是:丙烯酸与十八醇的摩尔比为1.2∶1,固体超强酸及对苯二酚的质量分数分别为6%,0.8%,反应温度为120℃,反应时间为3 h,在此反应条件下,酯的产率可达97%. Acrylic acid and octadecanol as raw materials, the solid super acid SO42- / TiO2 as catalyst and direct esterification of octadecyl acrylate was studied. The molar ratio of acrylic acid and stearyl alcohol, the mass fraction of catalyst and inhibitor , The reaction temperature and the reaction time on the reaction, and the product was characterized by infrared spectroscopy.The optimum conditions obtained from the experiment: the molar ratio of acrylic acid and stearyl alcohol is 1.2: 1, the solid superacid and benzene The mass fraction of diphenols were 6% and 0.8% respectively, the reaction temperature was 120 ℃ and the reaction time was 3 h. The yield of esters reached 97% under the reaction conditions.