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US 7,608,728 B2Granted
Method for producing propylene oxide
AssigneeBASF SE
InventorsUlrich Mueller, Georg Krug, Peter Rudolf, Joaquim Henrique Teles, Hans-Georg Goebbel, Peter Bassler
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Abstract
Process for preparing propylene oxide, which comprises at least the steps (i) and (ii): (i) providing a catalyst comprising at least one porous oxidic material; (ii) reacting propene with a hydroperoxide in at least one nitrile as solvent or in a solvent mixture comprising at least one nitrile in the presence of the catalyst of (i), wherein the at least one porous oxidic material is a zeolite which is assigned X-ray-crystallographically to the MWW type.
Claims13
A process for preparing propylene oxide, which comprises at least the steps (i) and (ii):
- (i) providing a catalyst comprising at least one porous oxidic material,
- wherein the provision of the catalyst in (i) comprises at least the steps (a) and (b):
- (a) preparing the at least one porous oxidic material;
- (b) producing a shaped body using the porous oxidic material obtained in (a);
- wherein the production of the shaped body in (b) comprises at least the steps (aa) to (dd):
- (aa) kneading the porous oxidic material in (a) with addition of at least one binder or at least one extrusion aid or at least one pore former or a water-containing composition or a mixture of two or more thereof;
- (bb) shaping the kneaded mixture obtained in (aa) to give at least one shaped body;
- (cc) drying the shaped body obtained in (bb);
- and
- (dd) calcining the dried shaped body obtained in (cc);
- wherein at least one pore former is added in step (aa);
- (ii) reacting propene with a hydroperoxide in at least one nitrile as solvent or in a solvent mixture comprising at least one nitrile in the presence of the catalyst of (i);
- wherein the at least one porous oxidic material is a zeolite which is assigned X ray crystallographically to the MWW type.
10 more elements
Dependencies are inferred from the claim text.