GNCC and/or PCC as a catalytic carrier for metal species
AssigneeOmya International AG
InventorJamal Ftouni
Life of this patent
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Abstract
The present invention refers to a catalytic system comprising a transition metal compound on a solid carrier, wherein the content of the transition metal compound on the surface of the solid carrier is from 0.1 to 30 wt.-%, based on the dry weight of the solid carrier. Furthermore, the present invention refers to a method for manufacturing the catalytic system, the use of the inventive catalytic system in a chemical reaction, the use of a solid carrier loaded with a transition metal compound as a catalyst and to granules mouldings or extrudates comprising the catalytic system.
Claims20
A catalytic system comprising:
- at least one solid carrier and a transition metal compound on the at least one solid carrier, wherein
- the at least one solid carrier is a ground natural calcium carbonate (GNCC) and/or precipitated calcium carbonate (PCC) and has a specific surface area of from 3 to 50 m2/g measured using nitrogen and the BET method according to ISO 9277:2010, wherein the ground natural calcium carbonate and/or precipitated calcium carbonate is not a surface-reacted calcium carbonate;
- and
- wherein the transition metal compound is selected from the group consisting of elemental Ni, elemental Ru, elemental Au, elemental Fe, elemental Cu, oxides of the foregoing transition metal compounds and mixtures thereof;
- and wherein the content of a transition metal species on the surface of the at least one solid carrier is from 0.1 to 30 wt.-%, based on the dry weight of the solid carrier.
A method for manufacturing a catalytic system comprising at least one solid carrier and a transition metal compound on the solid carrier, the method comprising:
- (a) providing the at least one solid carrier, wherein the at least one solid carrier is ground natural calcium carbonate (GNCC) and/or precipitated calcium carbonate (PCC) and has a specific surface area of from 3 to 50 m2/g measured using nitrogen and the BET method according to ISO 9277:2010, wherein the ground natural calcium carbonate and/or precipitated calcium carbonate is not a surface-reacted calcium carbonate;
- (b) providing at least one transition metal reagent comprising Ni ions, Ru ions, Au ions, Fe ions, Cu ions and mixtures thereof, in such an amount that the amount of said ions is from 0.1 to 30 wt.-%, based on the dry weight of the solid carrier;
- (c) contacting the at least one solid carrier provided in step (a) and the transition metal reagent provided in step (b) to obtain a mixture comprising a solid carrier and a transition metal reagent;
- and
- (d) calcining the mixture of step (c) at a temperature between 250° C. and 500° C. to obtain the catalytic system comprising a transition metal compound on the at least one solid carrier, wherein the transition metal compound is selected from the group consisting of Ni oxides, Ru oxides, Au oxides, Fe oxides, Cu oxides and mixtures thereof.
Dependencies are inferred from the claim text.