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Thermal post-synthetic modification of Al-MIL-53–COOH : systematic investigation of the decarboxylation and condensation reaction

Thermal post-synthetic modification of Al-MIL-53–COOH ...

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dc.contributor.author Reimer, Nele pl
dc.contributor.author Gil, Barbara [SAP11016267] pl
dc.contributor.author Marszałek, Bartosz [SAP14003961] pl
dc.contributor.author Stock, Norbert pl
dc.date.accessioned 2015-09-07T11:13:46Z
dc.date.available 2015-09-07T11:13:46Z
dc.date.issued 2012 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/15355
dc.language eng pl
dc.title Thermal post-synthetic modification of Al-MIL-53–COOH : systematic investigation of the decarboxylation and condensation reaction pl
dc.type JournalArticle pl
dc.description.physical 4119-4125 pl
dc.abstract.en Aluminium trimellitate [Al(OH)(BDC–COOH)] ? 0.9H 2 O( 1 ), the Al-MIL-53–COOH derivative, was discovered under solvothermal conditions using a high-throughput set-up suitable for microwave (MW)-assisted heating. The compound shows high structural flexibility. The large-pore (lp) form of the framework is obtained under large excess of H 2 O or after solvothermal treatment with N , N -dimethylformamide upon which [Al(OH)(BDC–COOH)] ? 0.7DMF ( 2 ) is obtained. Exposure of the water rich lp form of 1 to ambient conditions leads to the transformation to the narrow-pore (np) form. Thermal activation of both compounds results in the formation of the empty lp form and the activation of 1 was studied in detail by in situ IR-spectroscopy. Depending on the activation temperature and time two post-synthetic modification (PSM) processes are observed: the partial decarboxylation and the formation of acid anhydride groups. Thus at high temperatures and long activation times [Al(OH)(BDC–OCOCO–BDC) x /2 (BDC) y ]( x + y = 1) is formed. Upon cooling in air the anhydride functionality still remains intact, but the np form is obtained in air due to the adsorption of H 2 O molecules. Sorption measurements of 1 confirm a preference for polar gases like H 2 O and CO 2 in comparison to N 2 ,H 2 , and CH 4 . The N 2 capacity depends strongly on the degree of decarboxylation. pl
dc.description.volume 14 pl
dc.description.number 12 pl
dc.description.points 35 pl
dc.identifier.doi 10.1039/c2ce06649a pl
dc.identifier.eissn 1466-8033 pl
dc.title.journal CrystEngComm pl
dc.language.container eng pl
dc.affiliation Wydział Chemii : Zakład Chemii Nieorganicznej pl
dc.subtype Article pl
dc.rights.original bez licencji pl
.pointsMNiSW [2012 A]: 35


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