Issue 11, 2005
From the journal:

Physical Chemistry Chemical Physics

Packing of adsorbed molecules in microporous polymorphs aluminium methylphosphonates α and β†

Christian Schumacher,a   Jorge Gonzalez,b   Paul A. Wrightb  and  Nigel A. Seaton*a  

* Corresponding authors

a Institute for Materials and Processes, School of Engineering and Electronics, University of Edinburgh, King’s Buildings, Mayfield Road, Edinburgh, UK
E-mail: n.seaton@ed.ac.uk
Fax: +44 131 650 6551
Tel: +44 131 650 4867

b School of Chemistry, University of St Andrews, St Andrews, Fife, UK
E-mail: paw2@st-andrews.ac.uk
Fax: +44 1334 463808
Tel: +44 1334 463793

Abstract

The adsorption of N2 and CO2 in the microporous aluminium methylphosphonate polymorphs α and β is investigated by adsorption experiments in combination with Monte Carlo (MC) simulations. We find that close steric matching of N2 and polymorph α causes a packing transition not observed for the other pairs of adsorbate and adsorbent. This strong effect on adsorption behaviour of small differences in the adsorbent structure and adsorbent–adsorbate interactions suggests that microporous, hybrid inorganic–organic materials of this type offer opportunities for highly selective adsorptive separations. The realism of the MC simulations is extraordinarily dependent upon the molecular size parameters used.

Graphical abstract: Packing of adsorbed molecules in microporous polymorphs aluminium methylphosphonates α and β

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Article information

DOI
https://doi.org/10.1039/B501685A
Article type
Paper
Submitted
02 Feb 2005
Accepted
18 Apr 2005
First published
04 May 2005

Phys. Chem. Chem. Phys., 2005,7, 2351-2356

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Packing of adsorbed molecules in microporous polymorphs aluminium methylphosphonates α and β

C. Schumacher, J. Gonzalez, P. A. Wright and N. A. Seaton, Phys. Chem. Chem. Phys., 2005, 7, 2351 DOI: 10.1039/B501685A

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