| abstract |
The present invention discloses a silver-based ethylene oxide catalyst having improved stability. The enhanced stability silver-based ethylene oxide catalyst includes an alumina support that has been modified to include pockets on the surface. The presence of pockets on the surface of the modified support prevents or at least hinders the movement of silver particles on the surface of the support during the epoxidation procedure. In particular, the recesses on the surface of the alumina support effectively trap and/or immobilize the silver particles and prevent further movement of the silver particles. |