Powder neutron and X-ray diffraction studies of benzene adsorbed in zeolite ZSM-5

Article Abstract:

It has been possible to measure powder neutron and synchrotron X-ray diffraction patterns from zeolite ZSM-5 containing levels of adsorbed benzene of around 3.4 molecules per unit cell and 7.6 molecules per unit cell.

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Adsorption sites and diffusion rates of benzene in HY zeolite by force field based simulations

Article Abstract:

Research is presented concerning the use of theoretical simulations to investigate the diffusion and adsorption of benzene in a solution of zeolite HY by use of the density functional theory, molecular mechanics and neutron diffraction, spectroscopy and gravimetry.

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Thermodynamics and kinetics of adsorption of selected monoalkylbenzenes in H-ZSM-5

Article Abstract:

The adsorption of n-propylbenzene, isopropylbenzene, and n-butylbenzene in H-ZSM-5 is investigated. Analysis focused on the substituent attached to the benzene ring and its influence on the sorption and diffusion properties in MFI-type zeolites. Results showed that the adsorption isotherms are of type 1 and are well described by the Langmuir-Freundlich model. It is also demonstrated that the heat of adsorption of the longer sorbate molecules is linked to the concentration, suggesting the influence of sorbate-sorbate interaction. Uptake rates are also calculated by Fickian diffusion.

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