EP 1068150 A1 20010117 - METHOD FOR MAKING ACTIVATED CARBON WITH FERROMAGNETIC PROPERTIES, AND ACTIVATED CARBON OBTAINED BY SAID METHOD
Title (en)
METHOD FOR MAKING ACTIVATED CARBON WITH FERROMAGNETIC PROPERTIES, AND ACTIVATED CARBON OBTAINED BY SAID METHOD
Title (de)
VERFAHREN ZUR HERSTELLUNG VON AKTIVKOHLE MIT FERROMAGNETISCHEN EIGENSCHAFTEN UND NACH DIESEM VERFAHREN HERGESTELLTE AKTIVKOHLE
Title (fr)
PROCEDE DE FABRICATION D'UN CHARBON ACTIF A PROPRIETES FERROMAGNETIQUES, ET CHARBON ACTIF OBTENU A PARTIR DUDIT PROCEDE
Publication
Application
Priority
- FR 9900664 W 19990323
- FR 9803744 A 19980326
Abstract (en)
[origin: FR2776648A1] The invention concerns a method for making activated carbon with permanent magnetic properties, comprising the following steps: a) impregnating the raw material with an aqueous transition metal salt solution; b) filtering and drying the impregnated dried raw material; c) performing a pyrolysis cycle of the dried filtrate, gradually increasing the temperature up to a set temperature not less than 600 DEG C, and maintaining said temperature during sufficient retention time to obtain the desired degree of activation. The invention also concerns an activated carbon with ferromagnetic properties obtained by said method, said activated carbon being characterised in that it comprises transition metal oxide crystals closely embedded in its carbon structure whereof the micropores are not obstructed.
IPC 1-7
IPC 8 full level
C01B 31/08 (2006.01); C01B 31/10 (2006.01); C01B 32/336 (2017.01)
CPC (source: EP US)
B01J 20/20 (2013.01 - EP US); C01B 32/30 (2017.07 - EP US); C01B 32/318 (2017.07 - EP US); C01B 32/336 (2017.07 - EP)
Citation (search report)
See references of WO 9948811A1
Designated contracting state (EPC)
AT BE DE DK FR GB LU NL
DOCDB simple family (publication)
FR 2776648 A1 19991001; FR 2776648 B1 20000602; EP 1068150 A1 20010117; WO 9948811 A1 19990930
DOCDB simple family (application)
FR 9803744 A 19980326; EP 99909067 A 19990323; FR 9900664 W 19990323