Equilibrium isotherms and transport diffusivities for CO2 and CO2/N2 mixtures in silicalite measured by Infra-Red Micro-imaging

Carter D, Handen Tezel F, Kruczek B, Kärger J, Ruthven D, Marthala V, Chmelik C (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Microporous and Mesoporous Materials Elsevier

Book Volume: 300

Article Number: 110172

DOI: 10.1016/j.micromeso.2020.110172

Abstract

Large crystals of silicalite (0.1–1 mm) were synthesized and used to study the kinetics and equilibrium of CO2 adsorption (at room temperature), both as a pure component and as a binary mixture with nitrogen, using Infra-Red Microscopy (IRM) coupled with Fourier Transform Infra-Red Spectroscopy (FTIR). The use of such large crystals permits the measurement of fast intra-crystalline diffusion processes, beyond the range normally accessible by macroscopic techniques. As expected the effect of N2 on the CO2 equilibrium was minimal but the effect on the intra-crystalline diffusivity was significant. Diffusivities (at 300 K) range from 4 × 10−8 to 4 × 10−9 m2 s−1 for CO2, decreasing with increasing total concentrations of CO2 and N2 in the adsorbed phase.

Authors with CRIS profile

Venkata Marthala Professur für Katalyse

Involved external institutions

University of Ottawa CA Canada (CA) University of Maine US United States (USA) (US) Universität Leipzig DE Germany (DE)

How to cite

APA:

Carter, D., Handen Tezel, F., Kruczek, B., Kärger, J., Ruthven, D., Marthala, V., & Chmelik, C. (2020). Equilibrium isotherms and transport diffusivities for CO2 and CO2/N2 mixtures in silicalite measured by Infra-Red Micro-imaging. Microporous and Mesoporous Materials, 300. https://dx.doi.org/10.1016/j.micromeso.2020.110172

MLA:

Carter, D., et al. "Equilibrium isotherms and transport diffusivities for CO2 and CO2/N2 mixtures in silicalite measured by Infra-Red Micro-imaging." Microporous and Mesoporous Materials 300 (2020).

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