Densification of Silica Spheres: A New Pathway to Nano-Dimensioned Zeolite-Based Catalysts

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Machoke A, Apeleo Zubiri B, Leonhardt R, Marthala V, Schmiele M, Unruh T, Hartmann M, Spiecker E, Schwieger W
Zeitschrift: Chemistry - A European Journal
Verlag: WILEY-V C H VERLAG GMBH
Jahr der Veröffentlichung: 2017
Band: 23
Heftnummer: 46
Seitenbereich: 10983-10986
ISSN: 0947-6539


Abstract


Nanosized materials are expected to play a unique role in the development of future catalytic processes. Herein, pre-prepared and geometrically well-defined amorphous silica spheres are densified into silica-rich zeolites with nanosized dimensions. After the densification, the obtained nanosized zeolites exhibit the same spherical morphology like the starting precursor but characterized by a drastically reduced size, higher density, and high crystallinity. The phase transformation into crystalline zeolite material and the densification effect are achieved through a well-controlled steam-assisted treatment of the larger precursor particles so that the transformation process proceeds always towards the center of the spheres, just like a shrinking process. Furthermore, this procedure is applicable also to commercially available silica particles, as well as aluminum-containing systems (precursors) leading to acidic nano-catalysts with improved catalytic performance.



FAU-Autoren / FAU-Herausgeber

Apeleo Zubiri, Benjamin Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Hartmann, Martin Prof. Dr.
Professur für Katalyse
Leonhardt, Rainer
Lehrstuhl für Chemische Reaktionstechnik
Machoke, Albert Dr.-Ing.
Lehrstuhl für Chemische Reaktionstechnik
Marthala, Venkata Dr.
Professur für Katalyse
Schmiele, Martin
Lehrstuhl für Kristallographie und Strukturphysik
Schwieger, Wilhelm Prof. Dr.
Professur für Technische Chemie (Reaktionstechnik)
Spiecker, Erdmann Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Unruh, Tobias Prof. Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)


Zitierweisen

APA:
Machoke, A., Apeleo Zubiri, B., Leonhardt, R., Marthala, V., Schmiele, M., Unruh, T.,... Schwieger, W. (2017). Densification of Silica Spheres: A New Pathway to Nano-Dimensioned Zeolite-Based Catalysts. Chemistry - A European Journal, 23(46), 10983-10986. https://dx.doi.org/10.1002/chem.201702768

MLA:
Machoke, Albert, et al. "Densification of Silica Spheres: A New Pathway to Nano-Dimensioned Zeolite-Based Catalysts." Chemistry - A European Journal 23.46 (2017): 10983-10986.

BibTeX: 

Zuletzt aktualisiert 2018-11-08 um 03:14