Claims
- 1. A method for isomerizing halogenated aromatics comprising contacting a catalyst composition comprising a zeolite selected for isomerizing halogenated aromatics, wherein said composition further comprises a formed catalyst having secondary zeolite articles each with a maximum diameter of 5 microns or less with halogenated aromatics.
- 2. An isomerization method comprising contacting halogenated aromatics containing 15 ppm or less of dissolved oxygen with a zeolite-containing catalyst.
- 3. The isomerization method according to claim 2, wherein before the halogenated aromatics are contacted with said zeolite-containing catalyst, said halogenated aromatics are treated by a treatment method selected from the group consisting of dissipation treatment, reduced pressure treatment and distillation treatment, to remove the dissolved oxygen.
- 4. The isomerization method according to claim 2, wherein the zeolite-containing catalyst is a catalyst composition comprising a zeolite selected for isomerizing halogenated aromatics, wherein said composition further comprises a formed catalyst having secondary zeolite articles each with a maximum diameter of 5 microns or less.
- 5. The isomerization method according to claim 3, wherein the zeolite-containing catalyst is a catalyst composition comprising a zeolite selected for isomerizing halogenated aromatics wherein, said composition further comprises a formed catalyst having secondary zeolite articles each with a maximum diameter of 5 microns or less.
Priority Claims (2)
Number |
Date |
Country |
Kind |
9-185165 |
Jul 1997 |
JP |
|
9-335229 |
Dec 1997 |
JP |
|
Parent Case Info
This application is a divisional of application Ser. No. 09/113,587, filed July 10, 1998 now abandoned, incorporated herein by reference.
US Referenced Citations (9)