6533b85efe1ef96bd12bf44f

RESEARCH PRODUCT

Communication: Evidence of structural phase transitions in silicalite-1 by infrared spectroscopy

Maud RotgerJean-pierre BellatAnthony BallandrasGuy WeberChristian Paulin

subject

In situStructural phaseAdsorptionChemistryMolecular vibrationAnalytical chemistryGeneral Physics and AstronomyInfrared spectroscopyPhysical and Theoretical ChemistryFourier transform infrared spectroscopyZeoliteSpectral line

description

The adsorption of trichloroethylene, perchloroethylene, and p-xylene on a MFI (Mobile-FIve) zeolite is studied using in situ FTIR spectroscopy at 298 K. Spectra of self-supported zeolites in contact with increasing pressures of pure gas were recorded at equilibrium in the mid-infrared domain. Analysis of the evolution of the shape and location of vibrational bands of the zeolite as a function of the amount adsorbed allowed the observation of structural modifications of the adsorbent for the first time by infrared spectroscopy.

https://doi.org/10.1063/1.4819080