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dc.contributor.authorShamzhy, Mariya V.
dc.contributor.authorEliašová, Pavla
dc.contributor.authorVitvarová, Dana
dc.contributor.authorOpanasenko, Maksym V.
dc.contributor.authorFirth, Daniel S.
dc.contributor.authorMorris, Russell E.
dc.date.accessioned2017-10-18T23:32:42Z
dc.date.available2017-10-18T23:32:42Z
dc.date.issued2016-11-21
dc.identifier246904368
dc.identifiere6f5e5b4-9dfd-4d90-bb43-b6d1e0635eee
dc.identifier84991648617
dc.identifier000387854800036
dc.identifier.citationShamzhy , M V , Eliašová , P , Vitvarová , D , Opanasenko , M V , Firth , D S & Morris , R E 2016 , ' Post-synthesis stabilization of germanosilicate zeolites ITH, IWW, and UTL by substitution of Ge for Al ' , Chemistry - A European Journal , vol. 22 , no. 48 , pp. 17377-17386 . https://doi.org/10.1002/chem.201603434en
dc.identifier.issn1521-3765
dc.identifier.otherBibtex: urn:1e2fb5bd9cff6d96d5923f19613fdac9
dc.identifier.otherORCID: /0000-0001-7809-0315/work/61622149
dc.identifier.urihttps://hdl.handle.net/10023/11880
dc.descriptionM.S. thanks the Czech Science Foundation for the support of the Project 14-30898P. R.E.M. thanks the EPSRC for funding through grant EP/K025112/1.en
dc.description.abstractGermanosilicate zeolites often suffer from low hydrothermal stability due to the high content of Ge. Herein, we investigated the post-synthesis introduction of Al accompanied by stabilization of selected germanosilicates by degermanation/alumination treatments. The influence of chemical composition and topology of parent germanosilicate zeolites (ITH, IWW, and UTL) on the post-synthesis incorporation of Al was studied. Alumination of ITH (Si/Ge=2–13) and IWW (Si/Ge=3–7) zeolites resulted in the partial substitution of Ge for Al (up to 80 %), which was enhanced with a decrease of Ge content in the parent zeolite. In contrast, in extra-large pore zeolite UTL (Si/Ge=4–6) the hydrolysis of the interlayer Ge−O bonds dominated over substitution. The stabilization of zeolite UTL was achieved using a novel two-step degermanation/alumination procedure by the partial post-synthesis substitution of Ge for Si followed by alumination. This new method of stabilization and incorporation of strong acid sites may extend the utilization of germanosilicate zeolites, which has been until now been limited.
dc.format.extent10
dc.format.extent2042732
dc.language.isoeng
dc.relation.ispartofChemistry - A European Journalen
dc.subjectAluminationen
dc.subjectITHen
dc.subjectIWWen
dc.subjectUTLen
dc.subjectZeolitesen
dc.subjectQD Chemistryen
dc.subjectNDASen
dc.subject.lccQDen
dc.titlePost-synthesis stabilization of germanosilicate zeolites ITH, IWW, and UTL by substitution of Ge for Alen
dc.typeJournal articleen
dc.contributor.sponsorEPSRCen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doi10.1002/chem.201603434
dc.description.statusPeer revieweden
dc.date.embargoedUntil2017-10-18
dc.identifier.grantnumberEP/K025112/1en


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