Method for preparing methylsuccinic acid by catalyzing itaconic acid hydrogenation through microchannel reactor and application of methylsuccinic acid

The invention relates to a method for preparing methylsuccinic acid by catalyzing itaconic acid hydrogenation through a microchannel reactor and application of the method, and belongs to the technical field of chemistry and chemical engineering. According to the method for preparing the methylsuccinic acid through catalytic hydrogenation of the itaconic acid, the catalyst is used for catalyzing the itaconic acid to prepare the methylsuccinic acid through hydrogenation in the micro-channel reactor, negative effects of a traditional reactor can be eliminated, meanwhile, the mixing efficiency, the heat exchange efficiency and the reaction efficiency are improved, the conversion rate of the itaconic acid and the yield of the methylsuccinic acid are improved, and the method is suitable for industrial production. Compared with the prior art, the method has the advantages that potential safety hazards of hydrogenation reaction are fundamentally avoided, the influence of low mass transfer and heat transfer efficiency