Porous carbon materials and smoking articles and smoke...

Details Porous carbon materials and smoking articles and smoke... Porous carbon materials and smoking articles and smoke...

A - Human Necessities

24

D

A24D 3/16 (2006.01) B01J 20/20 (2006.01) B01J 20/28 (2006.01) C01B 31/08 (2006.01) C04B 38/00 (2006.01)

Patent

CA 2598763

A porous carbon material suitable for incorporation in smoke filters for cigarettes has a BET surface area of at least 800 m2/g and a pore structure that includes mesopores and micropores. The pore volume (as measured by nitrogen adsorption) is at least 0.9 cm3/g and from 15 to 65% of the pore volume is in mesopores. The pore structure of the material provides a bulk density generally less than 0.5 g/cc. The material may be produced by carbonising and activating organic resins and may be in the form of beads for ease of handling.

Matériau carboné poreux adapté pour être incorporé dans des filtres à fumée pour cigarettes, ayant une aire de surface BET d~au moins 800 m2/g et une structure de pores incluant des mésopores et des micropores. Le volume poreux (mesuré par adsorption d~azote) est d~au moins 0,9 cm3/g et de 15 à 65% du volume poreux est constitué de mésopores. La structure poreuse du matériau lui donne une densité apparente en général inférieure à 0,5 g/cc. Le matériau peut être fabriqué par carbonisation et activation de résines organiques et peut se présenter sous la forme de perles pour faciliter sa manipulation.

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