| 摘要 |
A process for the recovery of high purity boehmite with controlled pore size from spent hydroprocessing catalyst includes the step of treating the spent hydroprocessing catalyst composition in order to get recovery of the aluminas after extracting the valuable metals. The process permits easy and resourceful recovery of high quality boehmite from waste catalyst, which can be further used as hydroprocessing catalyst carrier having a pore structure almost identical or better than that used in heavy oil hydroprocessing catalysts. Such catalyst carrier is required to have high pore volume, macro- porosity, high strength and optimum surface area for active metal dispersion. The precipitated and hydrothermally treated resulting solid is well crystallized boehmite and has a surface area, pore volume and pore diameter distribution for reuse in the preparation of active catalysts and catalyst supports. |
