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  4. Surfactant assisted syntheses of monolithic hybrid ceramics with hierarchical porosity
 
Zitierlink DOI
10.26092/elib/2444
Verlagslink DOI
10.1016/j.jeurceramsoc.2015.03.034

Surfactant assisted syntheses of monolithic hybrid ceramics with hierarchical porosity

Veröffentlichungsdatum
2015-05-29
Autoren
Schlüter, Florian  
Wilhelm, Michaela  
Rezwan, Kurosch  
Zusammenfassung
A surfactant assisted emulsion-based syntheses route is presented for obtaining organo-silica-based monolithic hybrid ceramics with a hierarchical pore size distribution and tailorable surface characteristics. Methyl polysiloxane (MK) and methyl-phenyl polysiloxane (H44) with varying mixing ratios are selected as precursors, cross-linked and subsequently pyrolyzed at 500 °C or 600 °C, respectively. By adjusting the oil/water ratio and by tailoring the surfactant concentration controlled micro and macropore distributions with mesoscopic cell windows are obtained. After pyrolysis, specific surface areas of up to 600 m2/g are achieved. In addition, due to the distinguished pyrolysis decomposition behavior of MK and H44, the adjustment of the surface characteristics in terms of hydrophobicity or hydrophilicity is demonstrated. The presented surfactant assisted emulsion-based process is hence highly suitable for tailoring pore size distribution and surface characteristics at the same time. Both material properties are pivotal features for catalysis and gas separation applications.
Schlagwörter
Hybrid ceramic

; 

Emulsion

; 

Monolithic material

; 

Porosity

; 

Surface characteristics

; 

Mimenima
Verlag
Elsevier
Institution
Universität Bremen  
Fachbereich
Fachbereich 04: Produktionstechnik, Maschinenbau & Verfahrenstechnik (FB 04)  
Dokumenttyp
Artikel/Aufsatz
Zeitschrift/Sammelwerk
Journal of the European Ceramic Society  
Band
35
Heft
11
Startseite
2963
Endseite
2972
Seitenzahl
10
Zweitveröffentlichung
Ja
Dokumentversion
Postprint
Lizenz
https://creativecommons.org/licenses/by-nc-nd/4.0/
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

F. Schlüter, M. Wilhelm, K.Rezwan, Surfactant assisted synthesis of monolythic hybrid cerymics_2015_accepted version.pdf

Size

1.46 MB

Format

Adobe PDF

Checksum

(MD5):96fd3100b5a9e2ca2962f5113cce577c

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