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Adsorption

Erschienen in:

19.03.2019

Continuous-flow separation of cesium ion by ammonium molybdophosphate immobilized in a silica microhoneycomb (AMP-SMH)

verfasst von: Seiichiro Yoshida, Shinichiroh Iwamura, Isao Ogino, Shin R. Mukai

Erschienen in: Adsorption | Ausgabe 6/2019

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Abstract

Monolithic cesium ion (Cs⁺) adsorbents were synthesized via the directional freezing of a silica hydrogel containing ammonium molybdophosphate (AMP) particles, followed by freeze-drying. The adsorbents have a honeycomb-like structure with nearly straight microchannels (approximately 21 µm in diameter) running through them and with AMP particles partially embedded intact within the channel walls. Because of its honeycomb-like structure, the adsorbent, denoted as AMP silica microhoneycomb (AMP-SMH), achieves a significantly lower pressure drop than a typical column packed with spherical particles with similar diffusion path lengths for Cs⁺ when water was passed through it (about 35-times lower). Comparison of breakthrough curves between the AMP-SMH and columns packed with particles by numerical simulation also indicates that AMP-SMH shows shorter length of unused bed values. These results demonstrate that the AMP-SMH shows a high performance in the continuous separation of Cs⁺ due to their unique microhoneycomb structure.

Vorheriger Artikel Characterisation of the absolute accessible volume of porous materials

Nächster Artikel Seed-assisted, organic structure-directing agent-free synthesis of KFI-type zeolite with enhanced micropore volume and CO2 adsorption capacity

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Titel: Continuous-flow separation of cesium ion by ammonium molybdophosphate immobilized in a silica microhoneycomb (AMP-SMH)
verfasst von: Seiichiro Yoshida
Shinichiroh Iwamura
Isao Ogino
Shin R. Mukai
Publikationsdatum: 19.03.2019
Verlag: Springer US
Erschienen in: Adsorption / Ausgabe 6/2019
Print ISSN: 0929-5607
Elektronische ISSN: 1572-8757
DOI: https://doi.org/10.1007/s10450-019-00060-2

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