Determination of pore network accessibility in hierarchical porous solids
This paper validates the hypothesis that the supposedly non-specific adsorbates nitrogen and argon wet heavy metals differently, and shows how this unexpected effect can be actively utilised to deliver information on pore inter-connectivity. To explore surface chemistry influences on differential ad...
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| Format: | Article |
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American Chemical Society
2017
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| Online Access: | https://eprints.nottingham.ac.uk/48298/ |
| _version_ | 1848797734565314560 |
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| author | Rigby, Sean P. Hasan, Muayad Stevens, Lee Williams, Huw E.L. Fletcher, Robin S. |
| author_facet | Rigby, Sean P. Hasan, Muayad Stevens, Lee Williams, Huw E.L. Fletcher, Robin S. |
| author_sort | Rigby, Sean P. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This paper validates the hypothesis that the supposedly non-specific adsorbates nitrogen and argon wet heavy metals differently, and shows how this unexpected effect can be actively utilised to deliver information on pore inter-connectivity. To explore surface chemistry influences on differential adsorbate wetting, new findings for a mixed silica-alumina material were compared with data for pure silica and alumina materials. The new structural characterisation described can determine the distribution of the particular sub-set of meso-and micro-pores that connect directly to macropores that entrap mercury following porosimetry, as mapped by computerised X-ray tomography. Hence, it elucidates the spatial organization of the network and measures the improved accessibility to smaller pores provided by larger pores. It was shown that the silica-alumina pellets have a hierarchical pore-size arrangement, similar to the optimal blood vessel network architecture in animals. The network architecture derived from the new method has been independently validated using complementary gas sorption scanning curves, integrated mercury porosimetry, and NMR cryoporometry. It has also been shown that, rather than hindering interpretation of characterisation data, emergent effects for networks associated with these techniques can be marshalled to enable detailed assessment of the pore structures of complex, disordered solids. |
| first_indexed | 2025-11-14T20:08:35Z |
| format | Article |
| id | nottingham-48298 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:08:35Z |
| publishDate | 2017 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-482982020-05-04T19:18:56Z https://eprints.nottingham.ac.uk/48298/ Determination of pore network accessibility in hierarchical porous solids Rigby, Sean P. Hasan, Muayad Stevens, Lee Williams, Huw E.L. Fletcher, Robin S. This paper validates the hypothesis that the supposedly non-specific adsorbates nitrogen and argon wet heavy metals differently, and shows how this unexpected effect can be actively utilised to deliver information on pore inter-connectivity. To explore surface chemistry influences on differential adsorbate wetting, new findings for a mixed silica-alumina material were compared with data for pure silica and alumina materials. The new structural characterisation described can determine the distribution of the particular sub-set of meso-and micro-pores that connect directly to macropores that entrap mercury following porosimetry, as mapped by computerised X-ray tomography. Hence, it elucidates the spatial organization of the network and measures the improved accessibility to smaller pores provided by larger pores. It was shown that the silica-alumina pellets have a hierarchical pore-size arrangement, similar to the optimal blood vessel network architecture in animals. The network architecture derived from the new method has been independently validated using complementary gas sorption scanning curves, integrated mercury porosimetry, and NMR cryoporometry. It has also been shown that, rather than hindering interpretation of characterisation data, emergent effects for networks associated with these techniques can be marshalled to enable detailed assessment of the pore structures of complex, disordered solids. American Chemical Society 2017-11-20 Article PeerReviewed Rigby, Sean P., Hasan, Muayad, Stevens, Lee, Williams, Huw E.L. and Fletcher, Robin S. (2017) Determination of pore network accessibility in hierarchical porous solids. Industrial and Engineering Chemisty Research, 56 (50). pp. 14822-14831. ISSN 0888-5885 adsorbate; wetting; pore network; connectivity; co-operative effects; imaging http://pubs.acs.org/doi/abs/10.1021/acs.iecr.7b04659 doi:10.1021/acs.iecr.7b04659 doi:10.1021/acs.iecr.7b04659 |
| spellingShingle | adsorbate; wetting; pore network; connectivity; co-operative effects; imaging Rigby, Sean P. Hasan, Muayad Stevens, Lee Williams, Huw E.L. Fletcher, Robin S. Determination of pore network accessibility in hierarchical porous solids |
| title | Determination of pore network accessibility in hierarchical porous solids |
| title_full | Determination of pore network accessibility in hierarchical porous solids |
| title_fullStr | Determination of pore network accessibility in hierarchical porous solids |
| title_full_unstemmed | Determination of pore network accessibility in hierarchical porous solids |
| title_short | Determination of pore network accessibility in hierarchical porous solids |
| title_sort | determination of pore network accessibility in hierarchical porous solids |
| topic | adsorbate; wetting; pore network; connectivity; co-operative effects; imaging |
| url | https://eprints.nottingham.ac.uk/48298/ https://eprints.nottingham.ac.uk/48298/ https://eprints.nottingham.ac.uk/48298/ |