| http://www.w3.org/ns/prov#value | - Accordingly, one embodiment of the invention is a shaped composition comprising a carbonaceous pyropolymer having recurring units containing at least carbon and hydrogen atoms and characterized in that said composition has a crush strength of at least 6 kg, has pores whose pore diameters are less than about 300 ??? and the pore diameters are described by a bimodal distribution curve having maxima
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