| abstract |
A silver-based ethylene oxide catalyst having improved stability is disclosed. The improved stability-based oxidized ethylene catalyst comprises an alumina support modified to include a pore on the surface of the support. The presence of a pore on the surface of the modified carrier stops or at least inhibits the migration of silver particles at the surface of the carrier during the epoxidation process. In particular, the pores on the alumina carrier surface effectively trap and / or anchor silver particles or prevent further migration. |