Pore anisotropy and microporosity in nanostructured mesoporous solids
| dc.contributor.author | Knowles, J. | en |
| dc.contributor.author | Armatas, G. S. | en |
| dc.contributor.author | Hudson, M. | en |
| dc.contributor.author | Pomonis, P. | en |
| dc.date.accessioned | 2015-11-24T16:45:14Z | |
| dc.date.available | 2015-11-24T16:45:14Z | |
| dc.identifier.issn | 0743-7463 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/8898 | |
| dc.rights | Default Licence | - |
| dc.subject | adsorption-isotherms | en |
| dc.subject | electron-microscopy | en |
| dc.subject | nanometer-scale | en |
| dc.subject | porous solids | en |
| dc.subject | surface-area | en |
| dc.subject | bet equation | en |
| dc.subject | catalysts | en |
| dc.subject | silica | en |
| dc.subject | copolymer | en |
| dc.subject | mcm-41 | en |
| dc.title | Pore anisotropy and microporosity in nanostructured mesoporous solids | en |
| heal.abstract | In this study, we carried out an investigation related to the determination of the anisotropy (b) of pores as well as the extent of microporosity (mic%) in various groups of nanostructured mesoporous materials. The mesoporous materials examined were fifteen samples belonging to the following groups of solids: MCM-48s, SBA-15s, SBA-16s, and mesoporous TiO(2) anatases. The porosities of those materials were modified either during preparation or afterward by the addition of Cu(II) species and/or 3(5)-(2-pyridinyl) pyrazole (PyPzH) into the pores. The modification of porosity in each group took place to make possible the internal comparison of the b and mic% values within each group. The estimation of both the b and mic% parameters took place from the corresponding nitrogen adsorption-desorption isotherms. The new proposed method is able to detect a percentage of microporosity as low as a few percent, which is impossible by any of the methods used currently, without the use of any reference sample or standard isotherms. A meaningful inverse relationship is apparent between the b and mic% values, indicating that large values of b correspond to small values of mic%. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | Doi 10.1021/La0518871 | - |
| heal.identifier.secondary | <Go to ISI>://000234410300066 | - |
| heal.identifier.secondary | http://pubs.acs.org/doi/pdfplus/10.1021/la051887l | - |
| heal.journalName | Langmuir | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2006 | - |
| heal.publisher | American Chemical Society | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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