Controlled synthesis of core-shell carbide-derived carbons through in situ generated chlorine

Ariyanto T, Zhang G, Riyahi F, Gläsel JS, Etzold B (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Carbon Elsevier

Book Volume: 115

Pages Range: 422-429

DOI: 10.1016/j.carbon.2017.01.032

Abstract

Core-shell porous carbon represents an innovative concept for optimizing performances of carbon materials in a wide range application. Here, a novel route to produce carbons with spatially varying pore and microstructure is presented. Following the carbide-derived carbon method, a homogeneous and adjustable shell generation is achieved through mixing a limited amount of solid chlorine precursors with titanium carbide raw material. Chlorine is released in situ when reaching approx. 600 °C and consumed subsequently directly, resulting in the aspired materials. Various characterization methods proved that the amount of solid chlorine precursor directly adjusts the share of the shell for the core-shell material, while a range of 5–80% was studied. The amorphous, microporous shell can be converted to a mesoporous and graphitic shell (crystal sizes 20 nm), through a subsequent vacuum annealing, allowing to control the properties of the carbon shell. The carbon core results after a subsequent second chlorination step, where directly gaseous chlorine is used. The materials were characterized in detail after every step of this novel route. Adjusting the share between mesoporous/graphitic shell and microporous/amorphous core for these new materials is of interest in applications where competing processes like mass transfer and surface interaction need to be optimized.

Authors with CRIS profile

Guirong Zhang Professur für Katalytische Materialien Farshad Riyahi Lehrstuhl für Chemische Reaktionstechnik Jan-Sebastian Gläsel Lehrstuhl für Chemische Reaktionstechnik Bastian Etzold Professur für Katalytische Materialien

Involved external institutions

Gadjah Mada University (UGM) ID Indonesia (ID)

How to cite

APA:

Ariyanto, T., Zhang, G., Riyahi, F., Gläsel, J.-S., & Etzold, B. (2017). Controlled synthesis of core-shell carbide-derived carbons through in situ generated chlorine. Carbon, 115, 422-429. https://doi.org/10.1016/j.carbon.2017.01.032

MLA:

Ariyanto, Teguh, et al. "Controlled synthesis of core-shell carbide-derived carbons through in situ generated chlorine." Carbon 115 (2017): 422-429.

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