中文摘要：

以机械混合的Zn（OAc）2和Hβ为催化剂，碳酸二甲酯（DMC）、苯胺和甲醛溶液为原料，采用“一步”法合成了二苯甲烷二氨基甲酸甲酯（MDC）。实验结果表明，优化的反应条件是：n（DMC）／n（AN）／n（HCHO）：31／1／0．15、n（Zn（OAc）2）／n（AN）=0．15、m（H8）／m（AN）=0．8，在120℃反应6h，苯胺转化率为79．8％，MDC收率为18．6％。Zn（OAc）2＋Hp催化剂使用一次即失活，通过对失活催化剂表征发现其失活的原因是由于ZnO的生成所致。

英文摘要：

Using dimethyl carbonate （DMC）, aniline and formaldehyde as raw material, Zn（OAc）2＋ Hβ was selected as the catalyst for the one-step synthesis of MDC. The effect of reaction conditions on catalytic performance of Zn（OAc）2 ＋Hβ was studied. Optimal reaction conditions were as follows： n （DMC）/n（AN）/n（HCHO）=31/1/0. 15, n（Zn（OAc）2）/n（AN）=0. 15, m（Hβ）/m（AN）=0. 8, reaction temperature was 120 ℃, reaction time was 6 h. Under these conditions, aniline conversion was 79.8 % and MDC yield was 18.6 %. Zn（OAc）2＋Hβ Catalyst was deactivated after being used for only once. The cause for its deactivation was the formation of ZnO by the characterization of the deactivated Zn（OAe）2＋Hβ catalyst.