Method for producing isophoranediamine by hydrogenation of isophoronitride

摘要

In the present invention, hydrogenation reduction is continuously performed in a multi-stage bubble tower type reactor filled with a supported basic cobalt-based catalyst, and isophorone nitrile imine and hydrogen gas are sequentially directed in the reactor of each stage. The present invention relates to a method for producing isophorone diamine by hydrogenation reduction of isophorone nitrile imine, which obtains isophorone diamine by subjecting it to flow contact to carry out a hydrogenation reduction reaction. According to the manufacturing method, the backmixing problem can be solved, and the conversion rate and the cis / trans ratio of the product can be further increased.