FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2020654833> ?p ?o ?g. }

• W2020654833 endingPage "2437" @default.
• W2020654833 startingPage "2432" @default.
• W2020654833 abstract "Cr6+ ions were incorporated into the lattice sites of phase-pure silicalite-2 made using 3,5-dimethylpiperidinium as a structure-directing agent. The materials exhibited a remarkably well-resolved vibronic emission consisting of a high frequency progression of 987 cm–1, which was assigned to the fundamental symmetric stretching mode of the (Si–O−)2Cr(═O)2 group dominated by the terminal Cr═O stretch. A low frequency progression at 214 cm–1, which was assigned to a symmetric O–Cr–O bending mode, was built on each band of the 987 cm–1 progression. Studies of the vibronic structure of the emission spectrum as a function of temperature and Cr ion concentration reveal an abrupt change in the Franck–Condon factor of the emission at 20 K for samples with very low Cr concentrations (0.03 mol %). The change in the Franck–Condon factor is attributed to a temperature-induced structural change in the coordination sphere of the metal ion. This structural change was found to be accompanied by a concomitant structural change in the lattice structure of the silicalite-2. This structural change, as studied by temperature-dependent X-ray diffraction, did not involve a crystallographic phase change but an abrupt decrease in the unit cell volume, caused specifically by a decrease in the c-axis. This structural change was not observed in pure silicalite-2, indicating that it is not intrinsic to the silicalite lattice. Moreover, no similar structural change was observed at higher Cr loading (1 mol %). This suggests that the presence of the Cr ions and the changes in the coordination geometry they undergo at low temperature induced the observed contraction in the silicalite-2 lattice, in effect acting as a thermal switch that decreases the unit cell volume." @default.
• W2020654833 created "2016-06-24" @default.
• W2020654833 creator A5010044705 @default.
• W2020654833 creator A5022972636 @default.
• W2020654833 creator A5039747247 @default.
• W2020654833 creator A5055326505 @default.
• W2020654833 creator A5076270318 @default.
• W2020654833 date "2012-01-09" @default.
• W2020654833 modified "2023-09-26" @default.
• W2020654833 title "Metal Site-Mediated, Thermally Induced Structural Changes in Cr⁶⁺-Silicalite-2 (MEL) Molecular Sieves" @default.
• W2020654833 cites W1981745707 @default.
• W2020654833 cites W1986638016 @default.
• W2020654833 cites W1987049094 @default.
• W2020654833 cites W1989235197 @default.
• W2020654833 cites W2004447300 @default.
• W2020654833 cites W2009014828 @default.
• W2020654833 cites W2013708137 @default.
• W2020654833 cites W2023612164 @default.
• W2020654833 cites W2040127726 @default.
• W2020654833 cites W2056544330 @default.
• W2020654833 cites W2061716734 @default.
• W2020654833 cites W2073998284 @default.
• W2020654833 cites W2089829567 @default.
• W2020654833 cites W2090833977 @default.
• W2020654833 cites W2095178966 @default.
• W2020654833 cites W2145400939 @default.
• W2020654833 cites W2162772794 @default.
• W2020654833 cites W2332449190 @default.
• W2020654833 cites W4255919450 @default.
• W2020654833 cites W4299496276 @default.
• W2020654833 doi "https://doi.org/10.1021/ic202401a" @default.
• W2020654833 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22229861" @default.
• W2020654833 hasPublicationYear "2012" @default.
• W2020654833 type Work @default.
• W2020654833 sameAs 2020654833 @default.
• W2020654833 citedByCount "10" @default.
• W2020654833 countsByYear W20206548332013 @default.
• W2020654833 countsByYear W20206548332014 @default.
• W2020654833 countsByYear W20206548332016 @default.
• W2020654833 countsByYear W20206548332018 @default.
• W2020654833 countsByYear W20206548332020 @default.
• W2020654833 countsByYear W20206548332021 @default.
• W2020654833 countsByYear W20206548332023 @default.
• W2020654833 crossrefType "journal-article" @default.
• W2020654833 hasAuthorship W2020654833A5010044705 @default.
• W2020654833 hasAuthorship W2020654833A5022972636 @default.
• W2020654833 hasAuthorship W2020654833A5039747247 @default.
• W2020654833 hasAuthorship W2020654833A5055326505 @default.
• W2020654833 hasAuthorship W2020654833A5076270318 @default.
• W2020654833 hasConcept C105281773 @default.
• W2020654833 hasConcept C115624301 @default.
• W2020654833 hasConcept C120665830 @default.
• W2020654833 hasConcept C121332964 @default.
• W2020654833 hasConcept C139719470 @default.
• W2020654833 hasConcept C145148216 @default.
• W2020654833 hasConcept C147789679 @default.
• W2020654833 hasConcept C150394285 @default.
• W2020654833 hasConcept C162324750 @default.
• W2020654833 hasConcept C178790620 @default.
• W2020654833 hasConcept C185592680 @default.
• W2020654833 hasConcept C207114421 @default.
• W2020654833 hasConcept C24890656 @default.
• W2020654833 hasConcept C2781204021 @default.
• W2020654833 hasConcept C49271019 @default.
• W2020654833 hasConcept C50515024 @default.
• W2020654833 hasConcept C544153396 @default.
• W2020654833 hasConcept C8010536 @default.
• W2020654833 hasConceptScore W2020654833C105281773 @default.
• W2020654833 hasConceptScore W2020654833C115624301 @default.
• W2020654833 hasConceptScore W2020654833C120665830 @default.
• W2020654833 hasConceptScore W2020654833C121332964 @default.
• W2020654833 hasConceptScore W2020654833C139719470 @default.
• W2020654833 hasConceptScore W2020654833C145148216 @default.
• W2020654833 hasConceptScore W2020654833C147789679 @default.
• W2020654833 hasConceptScore W2020654833C150394285 @default.
• W2020654833 hasConceptScore W2020654833C162324750 @default.
• W2020654833 hasConceptScore W2020654833C178790620 @default.
• W2020654833 hasConceptScore W2020654833C185592680 @default.
• W2020654833 hasConceptScore W2020654833C207114421 @default.
• W2020654833 hasConceptScore W2020654833C24890656 @default.
• W2020654833 hasConceptScore W2020654833C2781204021 @default.
• W2020654833 hasConceptScore W2020654833C49271019 @default.
• W2020654833 hasConceptScore W2020654833C50515024 @default.
• W2020654833 hasConceptScore W2020654833C544153396 @default.
• W2020654833 hasConceptScore W2020654833C8010536 @default.
• W2020654833 hasIssue "4" @default.
• W2020654833 hasLocation W20206548331 @default.
• W2020654833 hasLocation W20206548332 @default.
• W2020654833 hasOpenAccess W2020654833 @default.
• W2020654833 hasPrimaryLocation W20206548331 @default.
• W2020654833 hasRelatedWork W1969352129 @default.
• W2020654833 hasRelatedWork W1975580960 @default.
• W2020654833 hasRelatedWork W1978351390 @default.
• W2020654833 hasRelatedWork W1992915799 @default.
• W2020654833 hasRelatedWork W2033649299 @default.
• W2020654833 hasRelatedWork W2046455488 @default.
• W2020654833 hasRelatedWork W2055696230 @default.
• W2020654833 hasRelatedWork W2306574610 @default.

• next