Non-aqueous template-assisted synthesis of mesoporous nanocrystalline silicon orthophosphate

Simple item page
dc.contributor.authorStyskalik, Alešcs
dc.contributor.authorŠkoda, Davidcs
dc.contributor.authorMoravec, Zdeněkcs
dc.contributor.authorRoupcová, Pavlacs
dc.contributor.authorBarnes, Craig E.cs
dc.contributor.authorPinkas, Jiřícs
dc.coverage.issue90cs
dc.coverage.volume5cs
dc.date.issued2015-01-01cs
dc.description.abstractThe first synthesis of mesoporous nanocrystalline silicon orthophosphate Si5P6O25 is presented. The synthetic procedure is based on the non-hydrolytic sol-gel reaction in the presence of Pluronic P123 template and subsequent calcination in air. The condensation of silicon acetate, Si(OAc)(4), and tris(trimethylsilyl) phosphate, OP(OSiMe3)(3) (TTP), in non-aqueous solvents driven by elimination of trimethylsilyl acetate provides a homogeneous network with a high content of Si-O-P bonds and SiO6 moieties. After burning out the template, mesoporous silicon orthophosphate was obtained with surface areas up to 128 m(2) g(-1) and pore sizes around 20 nm. The nanocrystalline Si5P6O25 phase forms relatively easily (500 degrees C, 4 h) in comparison with other synthetic routes. All samples were characterized by SEM, TEM, elemental analysis, TGA, nitrogen adsorption, SAXS, H-1, C-13, Si-29, and P-31 solid-state NMR spectroscopy, and powder XRD. These xerogels showed superior catalytic activity and selectivity in methylstyrene dimerization.en
dc.formattextcs
dc.format.extent73670-73676cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationRSC Advances. 2015, vol. 5, issue 90, p. 73670-73676.en
dc.identifier.doi10.1039/c5ra10982ecs
dc.identifier.issn2046-2069cs
dc.identifier.orcid0000-0002-3969-5837cs
dc.identifier.other163293cs
dc.identifier.researcheridD-8788-2012cs
dc.identifier.scopus9436200300cs
dc.identifier.urihttp://hdl.handle.net/11012/201732
dc.language.isoencs
dc.publisherRoyal Society of Chemistrycs
dc.relation.ispartofRSC Advancescs
dc.relation.urihttps://pubs.rsc.org/en/content/articlehtml/2015/ra/c5ra10982ecs
dc.rightsCreative Commons Attribution 3.0 Unportedcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2046-2069/cs
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/cs
dc.subjectphosphoric-acid catalysten
dc.subjectorganic-inorganic hybriden
dc.subjectsol-gel synthesisen
dc.subjectphosphosilicate gelsen
dc.subjectambient conditionsen
dc.subjectcrystal-structureen
dc.subjectmolecular-sievesen
dc.subjectsurface-areaen
dc.subjectMAS NMRen
dc.subjectglassesen
dc.titleNon-aqueous template-assisted synthesis of mesoporous nanocrystalline silicon orthophosphateen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-163293en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:49:03en
sync.item.modts2025.01.17 15:18:55en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav materiálových věd a inženýrstvícs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Centrální laboratoř Biofotonikacs
Files
Collections
Ústav materiálových věd a inženýrství
Centrální laboratoř Biofotonika