Journal article


Hierarchically ordered foams derived from polysiloxanes with catalytically active coatings


Publication Details
Author(s): Adam M, Kocanis S, Fey T, Wilhelm M, Grathwohl G
Publisher: Elsevier
Publication year: 2014
Volume: 34
Pages range: 1715-1725
ISSN: 0955-2219

Abstract

Pt free and Pt containing hierarchically ordered macro/micro porous foams were generated by using polysiloxanes and platinic acid as precursors and expanded polystyrene beads as templates to generate macro pores. By pyrolysis at 500 C micro porosity and thus high specific surface areas were generated. The foams were analyzed in terms of macro- and microstructures (SEM, micro-computer tomography, TEM, BET) and catalytic properties (CO oxidation). For the crack free foams a method was additionally developed that allows the application of a thin Pt-containing layer only on the cell walls. The well known problems arising from mass transport limitation in micro porous materials can be diminished due to the generation of thin struts and this minimized Pt coating on the cell walls as demonstrated by catalytic experiments. (C) 2013 Elsevier Ltd. All rights reserved.



How to cite
APA: Adam, M., Kocanis, S., Fey, T., Wilhelm, M., & Grathwohl, G. (2014). Hierarchically ordered foams derived from polysiloxanes with catalytically active coatings. Journal of the European Ceramic Society, 34, 1715-1725. https://dx.doi.org/10.1016/j.jeurceramsoc.2013.12.011

MLA: Adam, Michael, et al. "Hierarchically ordered foams derived from polysiloxanes with catalytically active coatings." Journal of the European Ceramic Society 34 (2014): 1715-1725.

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