Synthesis of carbon monoliths with a multi-modal pore system bya one step impregnation technique
Author(s): LU Anhui, JAN Henriksm(a)tt, MIKA Lindn, FERDI Schth
Pages: 265-270
Year: 2003 Issue: 4
Journal: NEW CARBON MATERIALS
Keyword: Carbon monolith; Impregnation; Multi-modal pore system;
Abstract: Carbon monoliths with a multi-modal hierarchical porosity have been prepared by a nanocasting method with silica monoliths as the scaffold, in which volume and surface templating has been successfully combined in a one-step impregnation approach, and the smaller pores in the silica template are impregnated in a straightforward way. The monoliths obtained at different stages of the process were characterized by N2-adsorption, scanning electron microscopy and transmission electron microscopy. It is shown that the carbon monoliths represent a positive replica of the starting silica monoliths on the micrometer scale. The surface templated mesopores can be regarded as a positive replica, while the volume templated mesopores are a negative replica of the silica scaffold.
Pages: 265-270
Year: 2003 Issue: 4
Journal: NEW CARBON MATERIALS
Keyword: Carbon monolith; Impregnation; Multi-modal pore system;
Abstract: Carbon monoliths with a multi-modal hierarchical porosity have been prepared by a nanocasting method with silica monoliths as the scaffold, in which volume and surface templating has been successfully combined in a one-step impregnation approach, and the smaller pores in the silica template are impregnated in a straightforward way. The monoliths obtained at different stages of the process were characterized by N2-adsorption, scanning electron microscopy and transmission electron microscopy. It is shown that the carbon monoliths represent a positive replica of the starting silica monoliths on the micrometer scale. The surface templated mesopores can be regarded as a positive replica, while the volume templated mesopores are a negative replica of the silica scaffold.
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