| 摘要 |
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)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; and z is the total electrical charge of the cationic element or a compound of the general formula (II): [AzA′1-z][B1-x-yNixRhy]O3-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. |
