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In the aromatization of light hydrocarbons, hybrid catalysts containing Zn or Ga supported co-catalysts showed much better performance and on-stream stability than the parent ZSM-5 zeolite. This was attributed to the beneficial effect of the co-catalyst on the nature of the coke formed in the zeolite particles. In fact, with both Zn and Ga hybrid catalyst systems, it was observed that the coke species...
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