Cation-exchanged zeolite catalyst and process for producing mono-iodo benzene through transiodination by using it

摘要

The present invention relates to a cation-exchanged zeolite catalyst for an transiodination and a process for producing mono-iodo benzene by using it. Particularly, the cation-exchanged zeolite catalyst has a molar ratio of Si/Al from 5 to 100 and is ion-exchanged with an alkali metal or an alkaline earth metal in range of 2% to 50% of ion exchange capacity.;Further, the process for producing mono-iodo benzene of the present invention comprises the step of performing a transiodination by using the cation-exchanged zeolite catalyst to produce mono-iodo benzene from reactants including benzene and one or more multi-iodo benzenes selected from the group consisting of di-iodo benzene and tri-iodo benzene.

主权项

1. A process for producing mono-iodo benzene comprising the step of:
contacting reactants comprising multi-iodo benzene and benzene with a cation-exchanged zeolite catalyst, wherein the multi-iodo benzene is one or more selected from the group consisting of di-iodo benzene and tri-iodo benzene, and the catalyst is a Y zeolite catalyst, and has a molar ratio of Si/Al from 5 to 15 and has 10% to 50% of its cation exchange capacity exchanged with potassium (K+) cation or 20% to 50% of its cation exchange capacity exchanged with sodium (Na+) cation.