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Porosity and surface area of silica condensed in the presence of polyamines. (a) Surface area. (The data for the C2 series are replotted from ref. 14, with permission from the Royal Society of Chemistry.) (b) Surface area of silica pre- and post-heat treatment. (c) A comparison of pore size distribution between a typical blank mesoporous material with that obtained from nonmesoporous silica produced in the presence of C3N7, both before and after heat treatment.
