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Adsorption
Erschienen in: Adsorption 4/2017

21.04.2017

Mechanism of adsorption of actives onto microporous functionalised calcium carbonate (FCC)

verfasst von: Charlotte L. Levy, G. Peter Matthews, Giuliano M. Laudone, Samuel Beckett, Andrew Turner, Joachim Schoelkopf, Patrick A. C. Gane

Erschienen in: Adsorption | Ausgabe 4/2017

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Abstract

Microporous ‘functionalised’ calcium carbonate (FCC) has potential for use as a carrier for the controlled release of ‘actives’, by permeation and diffusion. We have investigated the nature of the FCC surface and the mechanism of adsorption of two typical actives, namely the anti-inflammatory drug aspirin and the flavour compound vanillin, from chloroform and aqueous ethanolic solutions. There is indirect evidence from the quantitative perturbation of Tóth isotherms that their adsorption is hindered by a stagnant diffusion layer of water trapped in the micro-porosity of the FCC. To complement previous studies of the surface of FCC, it was also tested with the cationic probe benzyltrimethylammonium bromide and the anionic probe sodium 2-naphthalenesulphonate. Experimental procedures were validated by comparison with adsorption onto ground calcium carbonate and high surface area talc.
Vorheriger Artikel Relationship between pore-size distribution and flexibility of adsorbent materials: statistical mechanics and future material characterization techniques
Nächster Artikel Results of comparative sorption studies of the coal-methane system carried out by means of an original volumetric device and a reference gravimetric instrument

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Metadaten
Titel
Mechanism of adsorption of actives onto microporous functionalised calcium carbonate (FCC)
verfasst von
Charlotte L. Levy
G. Peter Matthews
Giuliano M. Laudone
Samuel Beckett
Andrew Turner
Joachim Schoelkopf
Patrick A. C. Gane
Publikationsdatum
21.04.2017
Verlag
Springer US
Erschienen in
Adsorption / Ausgabe 4/2017
Print ISSN: 0929-5607
Elektronische ISSN: 1572-8757
DOI
https://doi.org/10.1007/s10450-017-9880-7

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