负载金属氧化物WO3／ZrO2固体超强酸催化合成邻苯二甲酸二丁酯

研究了以采用超声浸渍法制备的负载金属氧化物固体超强酸WO3／ZrO2为催化剂，用邻苯二甲酸酐和正丁醇为原料合成邻苯二甲酸二丁酯，考察了反应条件对该反应的影响。结果表明，适宜的反应条件为：酐醇物质的量比1：3．0，催化剂用量占反应物总质量的2．0％，反应时间3h，反应温度150℃。在此条件下酯收率达95．75％以上；经过后处理，产品纯度可达99．65％，其折光率（n20d）为1．4896，与文献值一致；该催化剂不仅具有反应活性高，而且重复使用性好，可代替硫酸用于该类反应。具有较好的工业应用前景。

The Catalytic Synthesis of Di- n- butyl Phthalate with Metal Oxide- supported Solid Superacid WO3/ZrO2 Catalyst

The WO/ZrO2 solid superacid catalyst was prepared by using Zr （OH）4 as supporter with ultrasonic impregnation, phthalic aflhydride and n - butyl alcohol with raw materials applied for the synthese of DBP （di - n - butyl phthalate ） was studied. The effects of reaction conditions were discovered. The optimal conditions of synthesis of DBP by the WO3/ZrO2 solid superacid catalyst were： mole ratio of n - butyl alcohol to phthalic anhydride 3.0 ： 1, mass of catalyst for 2. 0% of phthalie anhydride; reaction time 3 h and reaction temperature 150℃, esterification yield was above 95.60%, After treatment, its purity was 99.65%. The catalyst had high reaction activity, good repeatability. The replacement of H2SO4 with solid super acid in the synthesis of DBP was worth to popularize in industry.