Patent ID: 9101918
Filing Date: 2015-08-11
Classification: B01J,C07D

Abstract:
1. A method for the oxidation of an olefin to an olefin oxide, the method comprising: performing a vapor phase oxidation of an olefin with molecular oxygen in a fixed-bed tubular reactor in the presence of a catalyst, the catalyst comprising: (i) a support having a bimodal pore size distribution with a first mode of pores having a mean diameter ranging from about 0.01 μm to about 5 μm, and a second mode of pores having a mean diameter that is greater than the mean diameter range from about 0.01 μm to about 5 μm of said first mode of pores and is up to about 30 μm, wherein said first mode of pores comprises at most 45% of a total pore volume and said second mode of pores comprises at least 55% of the total pore volume, and (ii) a catalytically effective amount of silver, (iii) a promoting amount of rhenium, and (iv) a promoting amount of one or more alkali metals.