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发明公开
CN107445839A 乙醛酸酯的合成方法 有权

乙醛酸酯的合成方法
摘要：
本发明涉及一种乙醛酸酯的合成方法，主要解决现有技术存在反应温度高，乙醛酸酯收率低的问题。本发明通过采用包括使含氮氧化物流体、含氧流体、含乙醇酸酯流体在催化剂存在下接触生成乙醛酸酯的反应步骤；所述催化剂以重量份数计，包括以下组分：a)0.2～20份的选自V或Mo中至少一种的活性组分；b)0.05～15份的选自W、Sn、Sb、Bi、K、Na、Li、Mg、Ca或Ba中至少一种的助剂；c)65～99.75份的选自氧化铝、硅酸盐或硅铝酸盐中至少一种的载体的技术方案较好地解决了该问题，可用于乙醇酸酯氧化制乙醛酸酯的工业生产中。
摘要（英）：

The invention relates to a synthetic method for glyoxalate. The invention mainly aims to overcome the problems of high reaction temperature and low yield of glyoxylate in the prior art. The method provided by the invention comprises a reaction step of contacting a fluid containing a nitrogen oxide, an oxygen-containing fluid and a glycollate-containing fluid in the presence of a catalyst to produce glyoxylate. The catalyst comprises the following components by weight: a) 0.2 to 20 parts of at least one active component selected from a group consisting of V and Mo; b) 0.05 to 15 parts of an auxiliary agent which is at least one selected from a group consisting of W, Sn, Sb, Bi, K, Na, Li, Mg, Ca and Ba; and c) 65 to 99.75 parts of a carrier which is at least one selected from a group consisting of aluminum oxide, silicate and aluminosilicate. With such a technical scheme, the above problem is overcome, and the method is applicable to industrial production of glyoxylate through oxidation of glycollate.

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