Patent ID: 7863211
Filing Date: 2011-01-04
Classification: B01J,C07D

Abstract:
1. A process for the preparation of epoxides comprising reacting an olefinic compound with a peroxide compound in the presence of an epoxidation catalyst obtained according to a process comprising: (a) blending a mixture comprising a TS-1 titanium zeolite powder, water, at least one silicon derivative binder, at least one plasticizer in an amount of at least 1% and less than 10% by weight relative to the weight of titanium zeolite employed, a pore-forming substance and optionally other additives, in order to form a paste, said plasticizer and said pore-forming substance being distinct from one another and said pore-forming substance being added to the mixture in step (a) in an amount of from 5 to 35% by weight, compared to the weight of the titanium zeolite, and said binder being added to the mixture in step (a) in an amount of more than 5% and less than 20% by weight, compared to the weight of the titanium zeolite, (b) shaping the paste obtained in step (a) by extrusion, in order to obtain an extrudate, (c) drying in order to remove at least some of the water, and (d) calcining in order to remove at least some of the organic residues present and form pores, and comprising a granulation step carried out between the shaping step (b) and the drying step (c) or after the calcining step (d), in order to obtain extruded granules.