Prasad, Ravi Mohan ; Mera, Gabriela ; Morita, Koji ; Müller, Mathis M. ; Kleebe, Hans-Joachim ; Gurlo, Aleksander ; Fasel, Claudia ; Riedel, Ralf (2012)
Thermal decomposition of carbon-rich polymer-derived silicon carbonitrides leading to ceramics with high specific surface area and tunable micro- and mesoporosity.
In: Journal of the European Ceramic Society, 32 (2)
doi: 10.1016/j.jeurceramsoc.2011.08.020
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Herein we report on the thermal decomposition of SiCN polymer-derived ceramics leading to materials with high specific surface area and defined pore sizes. The ceramics were obtained by means of pyrolysis of a carbon-rich poly(diphenylsilylcarbodiimide) precursor and by varying the thermolysis parameters, namely temperature, annealing time and using additional annealing steps. The thermal decomposition of SiCN ceramics is correlated with the carbothermal reaction of amorphous silicon nitride phase with excess carbon and this detrimental event leads to high specific surface area up to 568 m2 g−1 and micro- and mesopores formation in these materials. High-resolution TEM investigations have confirmed that the pores are embedded only in the carbon phase. Moreover, the relationship between the pore sizes and the organization of free carbon phase is discussed.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Prasad, Ravi Mohan ; Mera, Gabriela ; Morita, Koji ; Müller, Mathis M. ; Kleebe, Hans-Joachim ; Gurlo, Aleksander ; Fasel, Claudia ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Thermal decomposition of carbon-rich polymer-derived silicon carbonitrides leading to ceramics with high specific surface area and tunable micro- and mesoporosity |
| Sprache: | Englisch |
| Publikationsjahr: | Februar 2012 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 32 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1016/j.jeurceramsoc.2011.08.020 |
| URL / URN: | https://www.sciencedirect.com/science/article/pii/S095522191... |
| Kurzbeschreibung (Abstract): | Herein we report on the thermal decomposition of SiCN polymer-derived ceramics leading to materials with high specific surface area and defined pore sizes. The ceramics were obtained by means of pyrolysis of a carbon-rich poly(diphenylsilylcarbodiimide) precursor and by varying the thermolysis parameters, namely temperature, annealing time and using additional annealing steps. The thermal decomposition of SiCN ceramics is correlated with the carbothermal reaction of amorphous silicon nitride phase with excess carbon and this detrimental event leads to high specific surface area up to 568 m2 g−1 and micro- and mesopores formation in these materials. High-resolution TEM investigations have confirmed that the pores are embedded only in the carbon phase. Moreover, the relationship between the pore sizes and the organization of free carbon phase is discussed. |
| Freie Schlagworte: | Precursor-organic, Electron microscopy, Microstructure-final, Porosity, Carbon-rich polymer-derived SiCN ceramic |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Geomaterialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe |
| Hinterlegungsdatum: | 02 Apr 2012 09:26 |
| Letzte Änderung: | 16 Aug 2021 12:39 |
| PPN: | |
| Sponsoren: | DFG, priority program SPP 1299, LOEWE-Zentrum AdRIA (Adaptronik—Research, Innovation, Application), funded by the state of Hesse, Germany |
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