Method for preparing metal-carbonyl clusters immobilized in zeolite and their use as heterogeneous catalysts

Claim 2

The use as heterogeneous catalysts in hydroformylation reactions of olefins and dienes, of metal carbonyl clusters trapped in the interior of the crystalline structure of zeolites, prepared by exchanging a zeolite with a metal in the form of a salt or an ion complex, subsequently reducing and carbonylating the metal itself, forming metal carbonyl clusters in the interior of said zeolite, hydroformylating an olefin or a diene under a pressure in a range of from about 50 to about 100 atmospheres, at a temperature in a range of from about 80° C. to about 130° C. in the presence of said zeolite having said metal carbonyl clusters trapped in the interior thereof and recovering aldehyde.

Claim 3

The use as heterogeneous catalysts in hydroformylation reactions of olefins and dienes, of zeolites of the types X and Y which contain rhodium carbonyl clusters trapped in the interior structure of the zeolites and which are prepared by exchanging a zeolite with an aqueous solution of [Rh(NH 3 )] 6 Cl 3 and forming a zeolite having a rhodium aminic complex trapped in the interior of the crystalline structure of the zeolite, reducing and carbonylating the exchanged zeolite with a mixture of CO and H 2 and forming rhodium carbonyl clusters in the interior of said zeolite; hydroformylating an olefin or a diene under a pressure in a range of from about 50 to about 100 atmospheres, at a temperature in a range of from about 80° C. to about 130° C. in the presence of said zeolite having said rhodium carbonyl clusters trapped in the interior thereof and recovering aldehyde.

Claim 4

The use as heterogeneous catalysts in hydroformylation reactions of olefins and dienes, of zeolites of the types X and Y which contain rhodium carbonyl clusters trapped in the interior structure of the zeolites and which are prepared by exchanging a zeolite with an aqueous solution of [Rh(NH 3 )] 6 Cl 3 and forming a zeolite having a rhodium aminic complex trapped in the interior of the crystalline structure of the zeolite, reducing and carbonylating the exchanged zeolite with a mixture of CO and H 2 and forming rhodium carbonyl clusters in the interior of said zeolite; hydroformylating an olefin or a diene under a pressure in a range of from about 50 to about 100 atmospheres, at a temperature in a range of from about 80° C. to about 130° C. in the presence of said zeolite having said rhodium carbonyl clusters trapped in the interior thereof and recovering aldehyde.