| abstract |
The invention is directed to a catalyst for the epoxidation of an olefin to an olefin oxide, the catalyst comprises a support having at least two pore size distributions, each pore size distribution having a different average pore size and a different pore size of maximum concentration, the catalyst further comprises a catalytically effective amount of silver, a rhenium promoting agent, and a promoter amount of one or more alkali metals, wherein at least the two pore size distributions are within a pore size scale of about 0.01 m to about 50 m. The invention is also directed to a process for the oxidation of an olefin to olefin oxide using the catalyst described above. |