对顺丁烯二酸二乙酯进行了常压加氢研究，考察了铜 锌 铝，铜 铬 钡，铜 铬锌，铜 铬 铝几个铜系催化剂对顺丁烯二酸二乙酯浅度加氢生成丁二酸二乙酯的催化活性．选择了铜 锌 铝催化剂的最佳工艺条件，并用 Ｘ－ 射线衍射对此催化剂进行了物相分析，表明铜锌 铝催化剂中的主活性成分是 Ｃｕ Ｏ， Ｃｕ 是活性中心， Ｃｕ 的迁移引起 Ｃｕ 晶粒长大是催化剂活性下降的主要原因 Hydrogenation of diethyl maleate at atmospheric pressure was studied. The effects of copper-zinc-aluminum, copper-chromium-barium, copper-chromium-zinc and copper-chromium-aluminum on the lightness of diethyl maleate Catalytic Activity of Hydrogenation to Diethyl Succinate. The optimum technological conditions of copper-zinc-aluminum catalyst were selected and the phase analysis of the catalyst was carried out by X-ray diffraction. The results showed that the main active component of copper-zinc-aluminum catalyst is CuO, Cu is the active center and the migration of Cu caused Cu Grain growth is the main reason for the decrease of catalyst activity