Journal article
(Original article)


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


Publication Details
Author(s): Machoke A, Apeleo Zubiri B, Leonhardt R, Marthala V, Schmiele M, Unruh T, Hartmann M, Spiecker E, Schwieger W
Publisher: WILEY-V C H VERLAG GMBH
Publication year: 2017
Volume: 23
Journal issue: 46
Pages range: 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.



How to cite
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.

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