Epoxidation catalyst, its use and epoxidation process in the presence of this catalyst
AssigneeSolvay SA
InventorsMichel Strebelle, Jean-Pierre Catinat
Life of this patent
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Abstract
Epoxidation catalyst based on titanium zeolite in the form of extruded granules. Use of this catalyst in the synthesis of epoxides, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reacting an olefinic compound, preferably allyl chloride or propylene, with a peroxide compound, preferably hydrogen peroxide. Process for the preparation of an epoxide, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reacting an olefinic compound, preferably allyl chloride or propylene, with a peroxide compound, preferably hydrogen peroxide, in the presence of the aforementioned catalyst.
Claims14
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 titanium zeolite powder, water, at least one binder, at least one plasticizer, a pore-forming substance and optionally other additives, in order to form a paste,
- (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,
- (d) calcining in order to remove at least some of the organic residues present, 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.
A process for the preparation of an epoxide selected from the group consisting of 1,2-epoxy-3-chloropropane and 1,2-epoxypropane, comprising reacting an olefinic compound selected from the group consisting of allyl chloride and propylene, with hydrogen peroxide, in the presence of an epoxidation catalyst obtained according to a process comprising:
- (a) blending a mixture comprising a titanium zeolite powder, water, at least one binder, at least one plasticizer, a pore-forming substance and optionally other additives, in order to form a paste,
- (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,
- (d) calcining in order to remove at least some of the organic residues present, 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.
Dependencies are inferred from the claim text.