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Updated: May 28, 2026

Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5
Published on: August 25, 2016
Diffusion and Adsorption of 2‑Methylpentane and 3‑Methylpentane in MFI-Type Zeolite Crystals
Patricia Seidel1, Kaihang Shi2,3, Christian Chmelik4
1Leipzig University, Institute of Chemical Technology, Linnéstr. 3, Leipzig 04103, Germany.
Abstract:
Due to the intimate contact of guest molecules with the inner surface of microporous adsorbents, slight changes in the structure of the guest molecules may lead to remarkable changes in their microdynamics. As an impressive example, in this work, diffusion measurements via IR microimaging (IRM) show that the transport diffusivity of 2-methylpentane (2MP) exceeds the value attained for 3-methylpentane (3MP) by a factor of 2-4.5 in silicalite-1, an MFI-type zeolite crystal and a technically relevant porous host system. This experimental finding is rationalized by comparison with the outcome of dynamically corrected transition state theory (dcTST) simulations.
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