| abstract |
A method for preparing a silver-containing catalyst for the selective oxidation of ethylene to ethylene oxide, comprising the steps of: (a) providing a multimodal support, (b) preparing an impregnation solution comprising a silver component, ( c) impregnating the multimodal support of step (a) at least once with the silver-containing impregnation solution of step (b) to form an impregnated support; (d) impregnating the multimodal support from step (c) at least once The impregnated multimodal support is subjected to a removal device, such as a centrifuge, for a duration sufficient to remove the impregnated silver impregnation solution from the multimodal support and by selectively removing the impregnated silver from a set of larger pores in the multimodal support (e) calcining the multimodal support at least once after the step (d); (f) optionally, repeating the impregnation step (c) ); (g) optionally, repeating the centrifugation step (d); and (h) optionally, repeating the calcination step (e). |