Process for the preparation of a catalytic specie using electro-deposition

US8092716B2 · kind B2 · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Daniel Gary · Montigny-le-Bretonneux, FR
• Pascal Del-Gallo · Étampes, FR
• Francesco Basile · Catanzaro, IT
• Angelo Vaccari · Bologna, IT
• Giuseppe Fornasari · Cremona, IT
• Valentina Rosetti · Modigliana, IT
• Erika Scavetta · Bologna, IT
• Domenica Tonelli · Bologna, IT

Key dates

• Filing date: Jan 10, 2007
• Grant date: Jan 10, 2012
• Expiry date: Jan 27, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

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.