Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  High-surface-area corundum by mechanochemically induced phase transformation of boehmite

Amrute, A. P., Łodziana, Z., Schreyer, H., Weidenthaler, C., & Schüth, F. (2019). High-surface-area corundum by mechanochemically induced phase transformation of boehmite. Science, 366(6464), 485-489. doi:10.1126/science.aaw9377.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Amrute, Amol P.1, Autor           
Łodziana, Zbigniew2, Autor
Schreyer, Hannah1, Autor           
Weidenthaler, Claudia3, Autor           
Schüth, Ferdi1, Autor           
Affiliations:
1Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
2INP, Polish Academy of Sciences, ul. Radzikowskiego 152, PL- 31-342 Kraków, Poland, ou_persistent22              
3Research Group Weidenthaler, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950291              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: In its nanoparticulate form, corundum (α-Al2O3) could lead to several applications. However, its production into nanoparticles (NPs) is greatly hampered by the high activation energy barrier for its formation from cubic close-packed oxides and the sporadic nature of its nucleation. We report a simple synthesis of nanometer-sized α-Al2O3 (particle diameter ~13 nm, surface areas ~140 m2 g-1) by the mechanochemical dehydration of boehmite (γ-AlOOH) at room temperature. This transformation is accompanied by severe microstructural rearrangements and might involve the formation of rare mineral phases, diaspore and tohdite, as intermediates. Thermodynamic calculations indicate that this transformation is driven by the shift in stability from boehmite to α-Al2O3 caused by milling impacts on the surface energy. Structural water in boehmite plays a crucial role in generating and stabilizing α-Al2O3 NPs.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2019-03-142019-09-272019-10-252019-10-25
 Publikationsstatus: Erschienen
 Seiten: 5
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1126/science.aaw9377
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Science
  Andere : Science
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Washington, D.C. : American Association for the Advancement of Science
Seiten: - Band / Heft: 366 (6464) Artikelnummer: - Start- / Endseite: 485 - 489 Identifikator: ISSN: 0036-8075
CoNE: https://pure.mpg.de/cone/journals/resource/991042748276600_1