Mechanistic Insights into Adsorptive and Catalytic Reactions from Controllable Distributions of Metal Cations (Pd, Pt, Ni, Cr, Cu) as [M-OH]⁺¹/1Al or M⁺²/2Al in Zeolites.

ABSTRACT: Anchoring divalent metal ions in the same zeolite framework with similar Si/Al ratio selectively as zeolite-bound M⁺² or [M⁺²-OH]⁺¹ cationic species enables critical comparison of the species' intrinsic reactivity for industrially and fundamentally relevant reactions. H-BEA zeolites with similar Si/Al ratios but differing framework Al siting were used to anchored multiple divalent metal cations (Ni, Pd, Pt, Cr, Cu) in the zeolite micropores. State-of-the-art infrared (IR) spectroscopy, electron paramagnetic resonance (EPR) measurements, including two-dimensional pulsed HYSCORE EPR, extended X-ray absorption fine structure (EXAFS), and density functional theory (DFT) calculations together provide unambiguous evidence for the selective formation of divalent m

SUBMITTER: Jaegers NR 

PROVIDER: S-EPMC12707354 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature