改性树脂催化剂催化浆态鼓泡床合成乙酸正丁酯

以改性D001型阳离子交换树脂为催化剂，以乙酸和正丁醇为原料，在浆态鼓泡床多相反应器反应回流条件下催化酯化反应制备乙酸正丁酯，研究了反应器的技术优势及催化剂的特性和催化剂类型、用量对酯化反应的影响及其使用寿命. 结果表明，最佳反应条件为：正丁醇:乙酸=1.2:1(摩尔比)，催化剂用量占乙酸量的40%(w)，反应温度110℃，反应时间75 min，该条件下乙酸正丁酯产率达98%以上，纯度达99.5%，催化剂经洗涤活化、再生，可重复使用6次.

Synthesis of n-Butyl Acetate with Modified Resin Catalysts in a Slurry Bubble Column Reactor

n-butyl acetate was synthesized with n-butanol and glacial acetic acid as raw materials in a slurry bubble column reactor by modified D001 cationic exchange resin catalyst. The technological advances of column reactor and characteristics of the catalyst were examined, and the effects of catalyst type, content, and used life time on the synthesis investigated. The results showed that under the optimized conditions of molar ratio of n-butanol to acetic acid 1.2:1, amount of catalyst 40% to that of the acetic acid, reaction temperature 110℃, and reaction time 75 min, the yield and purity of n-butyl acetate were 98% and 99.5%, respectively. By washing, activation and regeneration, the catalyst could be reused 6 times.