通过实验选出催化活性高的催化剂，用于催化合成混合二元酸二甲酯（DBE）。

Then the catalysts of high activities were selected to be used in the preparation of mixed dibasic acid dimethyl esters(DBE).

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采用一水合硫酸氢钠作为催化剂，催化己二酸生产副产物——混合二元酸与甲醇反应合成混合二元酸二甲酯。

Mixed dibasic acid dimethyl ester was synthesized from methanol and mixed dibasic acid, the byproduct of adipic acid, using sodium sulfate monohydrate as catalyst.

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