稀土SO_ 4^(2-)/ZrO_2-TiO_2复合固体超强酸对乙酸酯的催化合成研究

Study on Catalytic Action of Complex Solid Superacid SO_4^(2-) /Zr02 - Ti0_2 - La for Acetate Synthesis

采用低温陈化法制得稀土ＳＯ_４^(２－)/ＺｒＯ２－ＴｉＯ２复合固体超强酸,应用于乙酸酯类的合成中,在反应时间为２．５ｈ、醇酸摩尔比为１:１．５时,催化剂用量为反应物质量的１．４%~１．５%,酯化率可高达９７．４%。

The complex solid superacid SO42- /ZrO2 - TiO2 - La prepared by ageing method for acetate synthesis has been presented in the article. The optimum conditions are as follows: reaction time; 2. 5h; mole ratio of alcohol and acid; I-1. 5; catalyst ratio to reactants.-1, 4% - 1. 5%. The yield of ester could reach 97. 4%.