(560hj) Fin-like Zeolite Catalysts: A New Class of Hierarchical Materials
In this presentation, we will discuss the preparation of hierarchical ZSM-5 and ZSM-11 catalysts using both one-pot and seeded growth methods. Catalytic testing revealed a nearly three-fold decrease in the rate of catalyst deactivation during MTH reaction relative to conventional zeolite crystals. The fin-like zeolite catalysts also promoted the olefins cycle of the hydrocarbon pool (HCP) mechanism. HRTEM and tomography measurements confirmed the rough surface protrusions were well-aligned with the seed crystal, without potential pore blockage. Operando UV-vis spectroscopy of these fin-like crystals revealed the slower evolution of heavy coking species. Collectively, our findings indicate that this novel synthesis method enhanced the performance of ZSM-5 and ZSM-11 catalysts, thus offering an efficient and versatile platform to synthesize optimal zeolite catalysts with reduced diffusion limitations for diverse applications in the (petro) chemical industry.
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