首次将铌酸用于催化合成马来酸二辛酯。在酐醇摩尔比 1 3,回流反应 1h ,催化剂用量为 5g mol酐的条件下 ,转化率为 99 3% ,选择性为 85 6%。催化剂不经处理 ,可循环使用多次 ,且不污染环境 ,相对于一些常见催化剂 ,具有明显的优点 For the first time, niobic acid was used to catalyze the synthesis of dioctyl maleate. The conversion was 99 3% and the selectivity was 85 6% under the conditions of molar ratio of 1: 3 to 1: 1, refluxing reaction for 1 h and catalyst dosage of 5 g mol anhydride. The catalyst is untreated, recyclable several times, and does not pollute the environment, with significant advantages over some common catalysts