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Micro and mesoporosity of carbon derived from ternary and binary metal carbides
Journal article   Peer reviewed

Micro and mesoporosity of carbon derived from ternary and binary metal carbides

Elizabeth N Hoffman, Gleb Yushin, Tamer El-Raghy, Yury Gogotsi and Michel W Barsoum
Microporous and mesoporous materials, v 112(1), pp 526-532
2008

Abstract

Adsorption Carbon
In this work we systematically characterized both the micro- and mesoporosity that develops when Ti 3SiC 2, Ti 3AlC 2, Ti 2AlC, Ti 2AlC 0.5N 0.5, Ta 2AlC, Ta 2C, and TaC are chlorinated at different temperatures. The porosity of the carbide-derived carbon varied based on the initial carbide’s structure and chemistry. The carbides with anisotropic structures, such as the layered ternary carbides, result in larger mesopore volumes as compared to more isotropic carbides such as TaC. Furthermore, the carbon pore structure can collapse, resulting in low pore volumes for materials with low molar fractions of carbon, as was the case with Ti 2AlC 0.5N 0.5.

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Web of Science research areas
Chemistry, Applied
Chemistry, Physical
Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
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