针对实验中锌盐具有良好的活性，分别优化了以乙酸锌、硬脂酸锌、河北工业大学硕士学位论文一丙酸锌和三甲基乙酸锌为催化剂的反应条件。

For zinc salts having better activity to the reaction, the reaction condition was optimized using zinc acetate, zinc stearate, zinc propionate and zinc trimethylacetate as catalyst.

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在这里，脂肪酸金属盐是选自硬脂酸锌、硬脂酸铝及硬脂酸锡中的至少一种。

Here, the fatty acid metal salt is preferably at least one kind selected from the group consisting of zinc stearate, aluminum stearate and tin stearate.

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