Advanced porous carbon adsorbents for CO2 capture and separation

A method of manufacturing a grooved carbonaceous monolith, said method comprising sculpting a carbonaceous monolith structure obtained by a process for manufacturing a porous carbonaceous monolith structure comprising the steps of:

• i— introducing a precursor material comprising particles comprising a halogenated polymer having a melting point in a mold,
• ii— forming a shaped body comprising aggregates of the particles of the precursor material, by concurrently applying to the precursor material a pressure P ranging from 10 to 300 bars when the halogenated polymer is a vinylidene chloride homopolymer and from 10 to 150 bars when the halogenated polymer differs from a vinylidene chloride homopolymer, and maintaining the precursor material at a temperature T1 ranging from T1,min=20° C. to T1,max=Tm−50° C. wherein Tm is the melting point of the halogenated polymer, and,
• iii— optionally cooling then demolding the shaped body,
• iv— introducing the shaped body in a furnace,
• v— causing the pyrolysis of the halogenated polymer in the furnace until the porous carbonaceous monolith structure is obtained,
• wherein the carbonaceous monolith structure has a length to width and/or a length to thickness ratio of at least 4, and in that it presents a microporosity and at least one of an intra-particle macroporosity and an inter-particles macroporosity.