| abstract |
Provided is a method of preparing an acrylonitrile dimer including: supplying an acrylonitrile monomer, a phosphorus-based catalyst, and an alcohol solvent to a reactor to perform a dimerization reaction to produce dimerized reactants (S10); cooling the dimerized reactants to crystallize the phosphorus-based catalyst (S20); separating the crystallized phosphorus-based catalyst (S30); and supplying the dimerized reactants from which the phosphorus-based catalyst is separated to a distillation column to separate the acrylonitrile dimer (S40). |