Lewis acidityBeta zeolitePeriodic-DFTReactivity descriptorsLigand-zeolite complexThe Lewis acidic nature and reactivity of two industrially important catalysts, viz., Sn and Ti substituted beta zeolite (T-BEA) are analyzed using a unique combination of structural parameters, energetics and reactivity ...
Adsorption isotherms of CO and NO in HY and ZnY zeolites at −25 and 25°C as well as EPR spectra of NO at −196°C with and without coadsorbed CO were measured. From a quantitative analysis of the adsorption isotherms, the concentration of Lewis acid sites in HY and cation sites ...
(TMP) and monomethylamine (MMA), and solid-state double resonance NMR techniques to investigate the interactions between probe molecules and acid sites (i.e., Bronsted and Lewis acid sites) in zeolite Y.; The exact nature of the Lewis acid sites in acidic zeolite catalysts remains unresolved....