Selective Adsorption of Toluene on Perovskite-type Oxide

Organic chemical hydrides are one of the most promising methods for hydrogen storage, but aromatic compound remains unreacted after the hydrogenation process due to equilibrium limitations. We attempted to develop a solid-state adsorbent which could selectively adsorb toluene from methylcyclohexane...

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Bibliographic Details
Published in:Journal of the Japan Petroleum Institute 2018/09/01, Vol.61(5), pp.272-281
Main Authors: Suzuki, Tomohiro, Shiono, Keiri, Manabe, Shota, Yabe, Tomohiro, Higo, Takuma, Ogo, Shuhei, Sekine, Yasushi
Format: Article
Language:English
Subjects:
Adsorption
Aromatic compounds
DFT calculation
Electron states
Hydrogen storage
Methylcyclohexane
Organic chemicals
Organic chemistry
Organic hydride
Oxides
Perovskite oxide
Perovskites
Selective adsorption
Selectivity
Toluene
XANES spectra
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Summary:Organic chemical hydrides are one of the most promising methods for hydrogen storage, but aromatic compound remains unreacted after the hydrogenation process due to equilibrium limitations. We attempted to develop a solid-state adsorbent which could selectively adsorb toluene from methylcyclohexane (MCH)–toluene mixture. Several La-based oxides were tested and La0.8Ba0.2CoO3 − δ (LBCO) was found to exhibit high adsorption and selectivity for toluene. Analyses of the electronic state and adsorption state of toluene found part of the Co ions in the LBCO lattice were Co4+. Co4+ in the lattice and surface lattice oxygen are important for the selective adsorption of toluene.
ISSN:1346-8804
1349-273X
DOI:10.1627/jpi.61.272