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Published November 1996 | metadata_only
Journal Article

Reactions of meta-xylene on zeolites with intersecting medium and large pores I. Basic studies


The reactions of m-xylene are conducted over all known zeolites with intersecting medium and large pores (MCM-22, NU-87, CIT-1, SSZ-33, SSZ-26) and the results compared to those from large (SSZ-24, ZSM-12, zeolite beta, zeolite L) and medium (ZSM-5, EU-1) pore zeolites. Each of the materials MCM-22, NU-87 and CIT-1/SSZ-33/SSZ-26 reveals a unique reaction behavior in terms of the p-xyleneo-xylene and isomerization/disproportionation ratios, the distribution of formed trimethylbenzenes and the rate of deactivation. The reaction activities and selectivities of MCM-22 and CIT-1/SSZ-33/SSZ-26 are somewhat like medium and large pore zeolites, respectively, as is expected from their crystal structures. NU-87 displays a lower p-xyleneo-xylene ratio and a higher turnover frequency than predicted from the crystal structure.

Additional Information

© 1996 Elsevier Science B.V. Received 22 December 1995, Accepted 21 March 1996. Financial support for this work was provided by Akzo Nobel. We thank the Chevron Research and Technology Company for donation of zeolites SSZ-26 and ZSM-12.

Additional details

August 22, 2023
August 22, 2023