Matches in SemOpenAlex for { <https://semopenalex.org/work/W1966242805> ?p ?o ?g. }
Showing items 1 to 93 of
93
with 100 items per page.
- W1966242805 endingPage "113" @default.
- W1966242805 startingPage "99" @default.
- W1966242805 abstract "The thermal behaviors of five differently prepared samples (A–E) of the very-large-pore aluminophosphate molecular sieve VPI-5 have been investigated. Thermogravimetric analyses show significant differences in the thermal stabilities of the five samples. Nonetheless, all samples could be completely dehydrated without transformation to AlPO4-8 if a certain procedure was followed carefully. Although the powder diffraction patterns of all samples in their as-synthesized forms were very similar, one of the patterns of the dehydrated forms was different from the others. This particular sample Ad was 3 years old when the experiment was performed, whereas all the others had been freshly prepared. Consequently, structural studies of the dehydrated samples Ad and Ed were undertaken. Solid state 27Al, 31P and 1H MAS NMR experiments for the two samples yielded almost identical spectra. The 27Al spectra confirmed that all Al were tetrahedral, the 1H spectra showed that no water was present, and the 31P spectra contained seven peaks, indicating that the symmetry was much lower than P63cm (the expected topochemical space group). Rietveld refinement of the structures of the two dehydrated samples resulted in two variants of the VFI topology. Although both showed a clear monoclinic symmetry, the older sample Ad required the c-axis (along the 18-ring channel direction) to be doubled. The structure of sample Ed did not require this doubling, but two small peaks in the powder pattern remained unindexed. These could be satellite peaks resulting from an incommensurate modulation of the structure along the c-axis." @default.
- W1966242805 created "2016-06-24" @default.
- W1966242805 creator A5014873734 @default.
- W1966242805 creator A5030730614 @default.
- W1966242805 creator A5056600090 @default.
- W1966242805 date "2000-01-01" @default.
- W1966242805 modified "2023-09-24" @default.
- W1966242805 title "Characterization and structural analysis of differently prepared samples of dehydrated VPI-5" @default.
- W1966242805 cites W181188219 @default.
- W1966242805 cites W1971309905 @default.
- W1966242805 cites W1988545326 @default.
- W1966242805 cites W1995177532 @default.
- W1966242805 cites W2006784832 @default.
- W1966242805 cites W2010446917 @default.
- W1966242805 cites W2023538730 @default.
- W1966242805 cites W2024041806 @default.
- W1966242805 cites W2040794826 @default.
- W1966242805 cites W2050932954 @default.
- W1966242805 cites W2055405437 @default.
- W1966242805 cites W2056188070 @default.
- W1966242805 cites W2059413111 @default.
- W1966242805 cites W2061082702 @default.
- W1966242805 cites W2073008020 @default.
- W1966242805 cites W2076176525 @default.
- W1966242805 cites W2086612256 @default.
- W1966242805 cites W2146021656 @default.
- W1966242805 cites W2150183771 @default.
- W1966242805 cites W255221821 @default.
- W1966242805 cites W2952034522 @default.
- W1966242805 doi "https://doi.org/10.1016/s1387-1811(99)00165-1" @default.
- W1966242805 hasPublicationYear "2000" @default.
- W1966242805 type Work @default.
- W1966242805 sameAs 1966242805 @default.
- W1966242805 citedByCount "22" @default.
- W1966242805 countsByYear W19662428052013 @default.
- W1966242805 countsByYear W19662428052014 @default.
- W1966242805 countsByYear W19662428052015 @default.
- W1966242805 countsByYear W19662428052021 @default.
- W1966242805 countsByYear W19662428052022 @default.
- W1966242805 countsByYear W19662428052023 @default.
- W1966242805 crossrefType "journal-article" @default.
- W1966242805 hasAuthorship W1966242805A5014873734 @default.
- W1966242805 hasAuthorship W1966242805A5030730614 @default.
- W1966242805 hasAuthorship W1966242805A5056600090 @default.
- W1966242805 hasConcept C105281773 @default.
- W1966242805 hasConcept C115624301 @default.
- W1966242805 hasConcept C115645028 @default.
- W1966242805 hasConcept C121332964 @default.
- W1966242805 hasConcept C1276947 @default.
- W1966242805 hasConcept C150394285 @default.
- W1966242805 hasConcept C178790620 @default.
- W1966242805 hasConcept C185039092 @default.
- W1966242805 hasConcept C185592680 @default.
- W1966242805 hasConcept C198819137 @default.
- W1966242805 hasConcept C4839761 @default.
- W1966242805 hasConcept C60100273 @default.
- W1966242805 hasConcept C61276311 @default.
- W1966242805 hasConcept C8010536 @default.
- W1966242805 hasConceptScore W1966242805C105281773 @default.
- W1966242805 hasConceptScore W1966242805C115624301 @default.
- W1966242805 hasConceptScore W1966242805C115645028 @default.
- W1966242805 hasConceptScore W1966242805C121332964 @default.
- W1966242805 hasConceptScore W1966242805C1276947 @default.
- W1966242805 hasConceptScore W1966242805C150394285 @default.
- W1966242805 hasConceptScore W1966242805C178790620 @default.
- W1966242805 hasConceptScore W1966242805C185039092 @default.
- W1966242805 hasConceptScore W1966242805C185592680 @default.
- W1966242805 hasConceptScore W1966242805C198819137 @default.
- W1966242805 hasConceptScore W1966242805C4839761 @default.
- W1966242805 hasConceptScore W1966242805C60100273 @default.
- W1966242805 hasConceptScore W1966242805C61276311 @default.
- W1966242805 hasConceptScore W1966242805C8010536 @default.
- W1966242805 hasIssue "1" @default.
- W1966242805 hasLocation W19662428051 @default.
- W1966242805 hasOpenAccess W1966242805 @default.
- W1966242805 hasPrimaryLocation W19662428051 @default.
- W1966242805 hasRelatedWork W1973532676 @default.
- W1966242805 hasRelatedWork W1998607482 @default.
- W1966242805 hasRelatedWork W2045568882 @default.
- W1966242805 hasRelatedWork W2072526782 @default.
- W1966242805 hasRelatedWork W2097225352 @default.
- W1966242805 hasRelatedWork W2319171711 @default.
- W1966242805 hasRelatedWork W2465136011 @default.
- W1966242805 hasRelatedWork W2466624202 @default.
- W1966242805 hasRelatedWork W4285807456 @default.
- W1966242805 hasRelatedWork W2048926559 @default.
- W1966242805 hasVolume "34" @default.
- W1966242805 isParatext "false" @default.
- W1966242805 isRetracted "false" @default.
- W1966242805 magId "1966242805" @default.
- W1966242805 workType "article" @default.