초록 ▼

Process for the preparation of a catalytic specie consisting essentially of a metallic support, which is coated with a ceramic active phase layer, mainly compound of the general formula (I): RhxNiyMglAlm(OH)2z+(An−z/n)kH2O,  (I) wherein An− is mainly a silicate or a polysilicate anion; 0≦x≦0.3; 0≦y≦

Process for the preparation of a catalytic specie consisting essentially of a metallic support, which is coated with a ceramic active phase layer, mainly compound of the general formula (I): RhxNiyMglAlm(OH)2z+(An−z/n)kH2O,  (I) wherein An− is mainly a silicate or a polysilicate anion; 0≦x≦0.3; 0≦y≦0.9; 0≦l≦0.9; 0≦m≦0.5; 0≦k≦10; x+y0; 0.5≦y+l≦0.9; x+y+l+m=1; and z is the total electrical charge of the cationic element or a compound of the general formula (II): AzA′1-zB1-x-yNixRhyO3-δ  (II) wherein A and A′ are different and are selected from the Lanthanide or the Actinide families or from the group IIa of the Mendeleev's periodical table of elements; B is selected from the transition metal groups of columns IIIb, IVb, Vb, VIb, VIIb, Ib and IIb and group VIIIb of the Mendeleev's periodical table of elements; 0≦x≦0.7, 0≦y≦0.5, 0≦x+y≦0.8, 0≦z≦1 and is the sub stoechiometric value of oxygen to obtain the electric neutrality of the Perovskite compound; said process essentially consisting in a step (a) of electro-deposition of said ceramic active phase on said metallic support. Use of said catalytic specie as a catalyst oxidation of gaseous hydrocarbons, to produce synthesis gas.

대표청구항 ▼

1. A process for the preparation of a catalytic specie, said process comprising the electro-deposition of a ceramic active phase layer directly on a metallic support, the ceramic active phase layer comprising a compound of the general formula (I): [RhxNiyMglAlm(OH)2]z+(An−z/n)kH2O,  (I)wherein An− i

1. A process for the preparation of a catalytic specie, said process comprising the electro-deposition of a ceramic active phase layer directly on a metallic support, the ceramic active phase layer comprising a compound of the general formula (I): [RhxNiyMglAlm(OH)2]z+(An−z/n)kH2O,  (I)wherein An− is mainly a silicate or a polysilicate anion; 0≦x≦0.3;0≦y≦0.9;0≦l≦0.9;0≦m≦0.5;0≦k≦10;x+y>0;0.5≦y+l≦0.9;x+y+l+m=1; andz is the total electrical charge of the cationic element; andthe metallic support being selected from the group consisting of metallic foams which are stable at a temperature up to 1000° C. 2. The process of claim 1, wherein the ceramic active phase layer is a compound of the general formula (I) wherein: 0≦x≦0.1;0≦y≦0.3;0.3≦l≦0.8;0.1≦m≦0.4;0≦k≦5;x+y>0;0.6≦y+l≦0.8;x+y+l+m=1. 3. The process of claim 2, wherein the ceramic active phase layer is a compound selected from the group consisting of: [Ni0.08Mg0.60Al0.32(OH)2]0.32+(SiO32−)0.16kH2O,[Ni0.08Rh0.0015Mg0.60Al0.3185(OH)2]0.32+(SiO32−)0.16kH2O,[Rh0.005Mg0.71Al0.285(OH)2]0.32+(SiO32−)0.16kH2O,[Ni0.01Rh0.0002Mg0.67Al0.3198(OH)2]0.32+(SiO32−)0.16kH2O,[Ni0.02Mg0.63Al0.35(OH)2]0.35+(SiO32−)0.175kH2O,[Rh0.0004Mg0.65Al0.3496(OH)2]0.35+(SiO32−)0.175kH2O,[Ni0.02Mg0.78Al0.20(OH)2]0.35+(SiO32−)0.175kH2O, and[Rh0.0004Mg0.80Al0.1996(OH)2]0.20+(SiO32−)0.10kH2O. 4. The process of claim 1, wherein the process further comprises a calcination step. 5. The process of claim 1, wherein the process further comprises a calcination step. 6. A process for the preparation of a catalytic specie, said process comprising the electro-deposition of a ceramic active phase layer directly on a metallic support, the ceramic active phase layer comprising a compound of the general formula (I): [RhxNiyMglAlm(OH)2]z+(An−z/n)kH2O,  (I)wherein An− is mainly a silicate or a polysilicate anion; 0≦x≦0.3;0≦y≦0.9;0≦l≦0.9;0≦m≦0.5;0≦k≦10;x+y>0;0.5≦y+l≦0.9;x+y+l+m=1; andz is the total electrical charge of the cationic element; andthe metallic support being selected from the group consisting of metallic foams of FeCrAlY and the metallic foam of NiCrAlY. 7. The process of claim 6, wherein the ceramic active phase layer is a compound of the general formula (I) wherein: 0≦x≦0.1;0≦y≦0.3;0.3≦l≦0.8;0.1≦m≦0.4;0≦k≦5;x+y>0;0.6≦y+l≦0.8;x+y+l+m=1. 8. The process of claim 7, wherein the ceramic active phase layer is a compound selected from the group consisting of: [Ni0.08Mg0.60Al0.32(OH)2]0.32+(SiO32−)0.16kH2O,[Ni0.08Rh0.0015Mg0.60Al0.3185(OH)2]0.32+(SiO32−)0.16kH2O,[Rh0.005Mg0.71Al0.285(OH)2]0.32+(SiO32−)0.16kH2O,[Ni0.01Rh0.0002Mg0.67Al0.3198(OH)2]0.32+(SiO32−)0.16kH2O,[Ni0.02Mg0.63Al0.35(OH)2]0.35+(SiO32−)0.175kH2O,[Rh0.0004Mg0.65Al0.3496(OH)2]0.35+(SiO32−)0.175kH2O,[Ni0.02Mg0.78Al0.20(OH)2]0.35+(SiO32−)0.175kH2O, and[Rh0.0004Mg0.80Al0.1996(OH)2]0.20+(SiO32−)0.10kH2O. 9. A process for the production of a synthesis gas, said process comprising oxidizing a stream of gaseous hydrocarbons in the presence of catalytic specie that comprises a ceramic active phase that is directly electro-deposed on a metallic support, the ceramic active phase layer comprising a compound of the general formula (I): [RhxNiyMglAlm(OH)2]z+(An−z/n)kH2O,  (I)wherein An− is mainly a silicate or a polysilicate anion; 0≦x≦0.3;0≦y≦0.9;0≦l≦0.9;0≦m≦0.5;0≦k≦10;x+y>0;0.5≦y+l≦0.9;x+y+l+m=1; andz is the total electrical charge of the cationic element; andthe metallic support being selected from the group consisting of metallic foams which are stable at a temperature up to 1000° C. 10. The process of claim 9, wherein the process further comprises a calcination step. 11. A process for the production of a synthesis gas, said process comprising oxidizing a stream of gaseous hydrocarbons in the presence of catalytic specie that comprises a ceramic active phase that is directly electro-deposed on a metallic support, the ceramic active phase layer comprising a compound of the general formula (I): [RhxNiyMglAlm(OH)2]z+(An−z/n)kH2O,  (I)wherein An− is mainly a silicate or a polysilicate anion; 0≦x≦0.3;0≦y≦0.9;0≦l≦0.9;0≦m≦0.5;0≦k≦10;x+y>0;0.5≦y+l≦0.9;x+y+l+m=1; andz is the total electrical charge of the cationic element; andthe metallic support being selected from the group consisting of the metallic foam of FeCrA and metallic foam of NiCrAlY. 12. The process of claim 11, wherein the process further comprises a calcination step.