| 摘要 |
PURPOSE:In separating an isomer blend of trichlorobenzene or dichlorobormobenzene by the use of a zeolite adsorbent, to separate isomers having specific substitution positions selectively, by using ZSM type zeolite as an adsorbent. CONSTITUTION:In separating two or more isomers selected from (A) 1,2,3- substituted substance, (B) 1,2,4-substituted substance and (C) 1,3,5-substituted substance among compounds shown by the formula (X is Cl or Br) useful as an intermediate for agricultural chemicals, dye and industrial chemicals, ZSM type zeolite such as ZSM-5 zeolite, etc., are used as an adsorbent and each isomer can be separated in high purity and industrially advantageously from the isomer blend of the component A and/or the components C and B. The order of easiness of adsorption on the zeolite is the component C < the component A << the component B and especially difference between the component A or C and the component B is extremely large. |
