Krypton Adsorption on Zeolite-Templated Carbon and Anomalous Surface Thermodynamics
Source abstract
Abstract
Krypton adsorption was measured at eight temperatures between 253 and 433 K on a zeolite-templated carbon and two commercial carbons. The data were fitted using a generalized Langmuir isotherm model and thermodynamic properties were extracted. Differing from that on commercial carbons, krypton adsorption on the zeolite-templated carbon is accompanied by an increasing isosteric enthalpy of adsorption, rising by up to 1.4 kJ mol(-1) as a function of coverage. This increase is a result of enhanced adsorbate-adsorbate interactions promoted by the ordered, nanostructured surface of the adsorbent. An assessment of the strength and nature of these adsorbate-adsorbate interactions is made by comparing the measured isosteric enthalpies of adsorption (and other thermodynamic quantities) to fundamental metrics of intermolecular interactions of krypton and other common gases.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Carbon Dioxide Capture Technologies · Phase Equilibria and Thermodynamics · Zeolite Catalysis and Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
W. M. Keck Laboratory, California Institute of Technology, 138-78, Pasadena, California 91125, United States
Funding
Basic Energy Sciences
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