Simultaneous Modulation of Mesoporosity and Al Siting for Superior Performance Zeolite Catalyst in Ethylene Dehydroaromatization to Aromatics.

ABSTRACT: Porosity and Al siting are key levers for optimizing zeolite catalysts, yet they are often addressed independently due to the lack of effective integrated tuning strategies. Herein, we report an integrative methodology for preparing hierarchical zeolite (Z_F) with interconnected mesostructures and tunable Al siting, achieved via regioselective dissolution of Al-rich domains by presetting accessible and inaccessible zones within parent zeolite (Z_P). Remarkably, ∼60% of the framework channels' Al atoms were selectively removed without impairing the channel intersections' Al atoms. Despite a 39% reduction in Brønsted acid sites (BAS), Z_F exhibits a 1.8-fold higher turnover frequency (TOF) than Z_P during ethylene transformation at 973K, attributable t

SUBMITTER: Shen Y 

PROVIDER: S-EPMC12416449 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature