ABSTRACT
The porosity of the carbide-derived carbons (CDCs) has been modified by performing various post-treatments, among which annealing with hydrogen and activation, both chemical and physical, were used. Carbon materials always have some amount of heteroatoms that have a strong influence on the surface chemistry. This chapter presents an overview of synthesis, properties, and gas adsorption applications of nanoporous carbons, including activated carbons (ACs) and activated carbon monoliths (ACMs) prepared by physical or chemical activation of different precursors; ACs prepared by activation of hydro chars obtained by hydrothermal carbonization; templated carbons; and CDCs. The density of the powder nanoporous carbons is a key property for the gas storage applications presented in the next section, and it can be determined in two different ways: filling a container with the AC and vibrating it and pressing a given amount of AC in a mould at a given pressure and then releasing pressure.
