abstract |
(57) [Summary] [Structure] A method for purifying a styrene monomer, characterized in that impurities are removed after hydrogenation by two catalyst layers using catalysts having different noble metal concentrations. [Effect] By the styrene monomer purification method of the present invention, It is possible to produce a styrene monomer having a small amount of both ethylbenzene and phenylacetylene, that is, a styrene monomer having high purity. |