采用稀土固体超强酸SO2-4/TiO2/La3+为催化剂，对没食子酸和异丁醇催化酯化合成没食子酸异丁酯的影响因素及没食子酸异丁酯的抗氧化性能进行了研究。试验结果表明：异丁醇和没食子酸摩尔比为40：1、反应温度为75℃、催化剂用量为5%和反应时间为3.5 h时产率最高；在此最优条件下进行催化剂再生重复循环试验，证明稀土固体超强酸SO2-4/TiO2/La3+具有良好的循环使用性能，可再生重复使用。没食子酸异丁酯对植物油脂及其生物柴油均具有较好的抗氧化性能，抗氧化效果十分明显。%The factors affecting the synthesis and oxidation resistance of isobutyl gallate mixed with gallic acid and isobutyl alcohol were studied using rare earth solid superacid SO2-4/TiO2/La3+as the catalyst. The result of the experiments showed that the reaction condition of the highest esterification rate had a 40:1 molar ratio of alcohol to acid, a reaction temperature of 75℃, the catalyst amount was 5% and the reaction time was 3.5 hours. The test of the catalyst's reusing and regeneration in this condition proved that rare earth solid superacid SO2-4/TiO2/La3+has a good cycle performance. The results also showed that the isobutyl gallate had excellent oxidation resistance to vegetable oil and biodiesel.
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