首次以SO4^2--La2O3-TiO2为非均相催化剂，以水杨酸为原料，合成了水杨酸甲酯和乙酰水杨酸。考察了影响反应的条件，获得优化实验条件：n水杨酸：n甲醇为1：12，催化剂用量40g／mol酸，反应5h时，水杨酸甲酯的收率可达86％；n水杨酸：n乙酸酐为1：4，催化剂用量6g／mol酸时，乙酰水杨酸的收率可达87％，同时催化剂回收再生容易，重复使用4次催化活性无明显降低，是一种环境友好的催化剂。%Solid super acid SO4^2--La2O3-TiO2 is first applied to esteriflcation of Salicylic Acid with methyl alcohol and acetic anbyolride. Reaction eanditions are studied. The optimum condition is in the following： molar ratio of Salicylic Acid to methyl alcohol being 1：12 ,the quantity of catalyst being 40g/mol acid, and the reaction time being 5h, the yield of Methyl Salicylate reaching over 86% ; molar ratio of Salicylic Acid to acetic anbyolride being 1：4, the quantity of catalyst being 6g/mol acid, the yield of Aacetyl Salicylic Acid could reaching over 86%. The catalyst could be easily re - cycled at least four times without the obvious loss of catalytic activity. It is an envionmentally friendly catalyst.
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