New carbon materials with high porosity in the 1–7 nm range obtained by chemical activation with phosphoric acid of resorcinol–formaldehyde aerogels

Chemical activation of resorcinol–formaldehyde aerogels with phosphoric acid results in materials containing both intra-particle microporosity (pore volume ∼0.18 cm3g−1 and mean-pore-width ∼1 nm) and inter-particle micro/mesoporosity. The latter forms as