Process to retain nano-structure of catalyst particles...

Details Process to retain nano-structure of catalyst particles... Process to retain nano-structure of catalyst particles...

B - Operations, Transporting

01

J

B01J 23/74 (2006.01) B01J 21/18 (2006.01) B01J 23/745 (2006.01) B01J 37/18 (2006.01) C01B 31/02 (2006.01) D01F 9/127 (2006.01) B01J 23/28 (2006.01) B01J 23/72 (2006.01) B01J 35/10 (2006.01)

Patent

CA 2588913

In the novel process, a metal oxide is heated in a reactor under 20% H2 gas at a heating rate of 5 degrees C/min to 450 degrees C; the catalyst is held there for 30 minutes, followed by exposure to 10-20% CO for another 30 minutes; then cooled down to room temperature. The resultant catalyst is then used for synthesis of carbon fibers at 550 and 600 degrees C. In an additional embodiment the catalyst once produced is removed from the reactor, and a new batch of metal oxide catalyst is placed in the reactor to provide a continuous production process.

L'invention porte sur un nouveau procédé selon lequel: un oxyde métallique est chauffé dans un réacteur contenant 20 % de H2 à raison de 5 °C par minute, jusqu'à 450 °C; le catalyseur est conservé pendant 30 minutes; puis le catalyseur est exposé à 10-20 % de CO pendant 30 autres minutes; puis il est refroidi jusqu'à la température ambiante. Le catalyseur résultant est alors utilisé pour la synthèse de fibres de carbone à 550 et 600 °C. Dans une autre exécution, le catalyseur une fois produit est retiré du réacteur et un nouvelle fournée de catalyseur d'oxyde métallique est placée dans le réacteur de manière à assurer un processus continu de production.

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