Improved precious metal catalyst for debenzylation

Details Improved precious metal catalyst for debenzylation Improved precious metal catalyst for debenzylation

B - Operations, Transporting

01

J

B01J 23/38 (2006.01) B01J 21/18 (2006.01) B01J 23/44 (2006.01) B01J 23/56 (2006.01) B01J 23/89 (2006.01) B01J 35/10 (2006.01)

Patent

CA 2460852

One aspect of the invention relates to catalyst composite containing a metal catalyst and a specifically defined carbon support containing a carbonaceous material. For example, the carbon support may have a total pore surface area of about 800 m2/g or more and about 2,000 m2/g or less where about 20% or less of the total pore surface area is micro pore surface area. Alternatively the carbon support may have a total pore volume of at least about 0.75 cc/g where about 15% or less of the total pore volume is micro pore volume. In yet another aspect of the invention, the carbon support may have a phosphorus content of about 0.75% by weight or less. In still yet another aspect of the invention, methods of making and using the catalyst composite are disclosed.

Un des aspects de l'invention concerne un composite catalytique contenant un catalyseur métallique et un support de carbone spécifiquement défini contenant un matériau carboné. Par exemple, le support carboné peut présenter une surface de pores totale comprise entre environ 800 m?2¿/g et environ 2000 m?2¿/g maximum, environ 20 % ou moins de la surface de pores totale étant une surface de micropores. Dans une variante, le support carboné peut présenter un volume de pores total d'au moins 0,75 cc/g dans lequel au moins 15 % environ ou moins du volume de pores total est un volume de micropores. Dans un autre aspect encore, le support carboné peut présenter une teneur en phosphore d'environ 0,75 % en poids ou moins. Dans un dernier aspect, l'invention concerne des procédés de fabrication et d'utilisation de ce composite catalytique.

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