Method for preparing glyoxylic acid through continuous oxidation

The invention relates to a method for preparing glyoxylic acid through continuous oxidation, and belongs to the technical field of organic synthesis.The method comprises the steps that acrylic acid and a catalyst are mixed in a solvent, and a to-be-reacted material is obtained; mixing the to-be-reacted material and hydrogen peroxide in a reactor, and carrying out a continuous oxidation reaction to obtain glyoxylic acid; wherein the catalyst is prepared from at least one of phosphotungstic acid, phosphotungstate, vanadium pentoxide, vanadate, sulfate, metavanadate and chlorate; according to the method, substances such as phosphotungstic acid, phosphotungstate, vanadium pentoxide, vanadate, chlorate, metavanadate and sulfate are adopted as the catalyst, the solubility of the catalyst in a reaction system is high, wall attachment is not prone to occurring, and then production continuity is better facilitated. 本申请涉及一种连续氧化制备乙醛酸的方法，属于有机合成技术领域，方法包括：把丙烯酸和催化剂混合于溶剂，得到待反应物料；把所述待反应物料和过氧化氢于反应器中混合进行连续氧化反应，得到乙醛酸；其中，所述催化剂包括磷