Global Patent Index - EP 1068150 A1

EP 1068150 A1 2001-01-17 - 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

EP 1068150 A1 (FR)

Application

EP 99909067 A

Priority

  • FR 9900664 W
  • FR 9803744 A

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 (main, further and additional classification)

C01B 31/08; C01B 31/10

IPC 8 full level (invention and additional information)

C01B 31/08 (2006.01); C01B 31/10 (2006.01)

CPC (invention and additional information)

B01J 20/20 (2013.01); C01B 31/08 (2013.01); C01B 31/10 (2013.01)

Citation (search report)

See references of WO 9948811A1

Designated contracting state (EPC)

AT BE DE DK FR GB LU NL

EPO simple patent family

FR 2776648 A1 19991001; FR 2776648 B1 20000602; EP 1068150 A1 20010117; WO 9948811 A1 19990930

INPADOC legal status


2002-07-03 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011222

2001-08-22 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010709

2001-01-17 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000918

2001-01-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE DE DK FR GB LU NL