| 摘要 |
A method is provided for the restoration of catalytic activity in deactivated nitrogen-treated carbon catalysts. Nitrogen-treated carbon catalysts are those carbonaceous chars which have been subjected to nitrogen-containing compounds at temperatures above about 700.degree.C. These nitrogen-containing compounds can be present either as part of the char raw material or as an additive to the char at any point during its manufacture. The method provides for a means to restore catalytic activity which is largely independent of the mechanism by which deactivation of the catalyst sites occurs. In the present invention, the deactivated nitrogen-treated carbonaceous char is heated to temperatures greater than 700.degree.C, followed by cooling in an inert atmosphere. While at temperatures above 700.degree.C, the char can be exposed to gasifying agents such as steam, carbon dioxide, or oxygen.
|
