Monolithic catalyst for preferentially oxidizing CO under hydrogen-rich condition, and preparation method thereof
A catalyst and integrated technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems affecting catalyst performance, etc., to avoid catalyst deactivation, Good catalytic performance and strong applicability
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[0041] Regarding the preparation method of porous metal, in the prior art, such as JPH07150270 A, a high-strength porous metal body is proposed by combining oxides, carbides, nitrogens of elements belonging to Groups II to VI of the periodic table A coating of fine particles for strengthening, such as a compound, is coated on the surface of the skeleton of a three-dimensional network resin having interconnected pores, and a metal plating layer of Ni alloy or Cu alloy is formed on the coating film of the coating, and then heat treatment is performed. The particles are dispersed in the metal coating. WO2013099532 proposes a method for producing a porous body in which, when conducting conductive treatment on the surface of a resin-formed body having a three-dimensional network structure, a carbon coating is mixed with metal powder for coating, and then a desired metal is electroplated , and heat treatment to obtain a homogeneous alloy porous body. US2018030607 discloses a method...
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[0043] Example 1
[0044] The catalyst preparation process is as follows:
[0045] (a) Preparation of polystyrene (1) macroporous polymer foam, the pore size of the polystyrene channels 2 is 20-40 μm. ;
[0046] (b) configure a metal active component aqueous solution, the active component is chloroplatinic acid-ruthenium nitrosyl nitrate-graphene aqueous solution 3, wherein the molar ratio Pt:Ru=1:(1~1.5), the active component 2 ~9wt.%, the content of graphene is 10~30%;
[0047] (c) Use a vacuum pump for vacuum filling until no air bubbles emerge from the surface of the polymer foam immersed in the aqueous solution of the metal active component, then dry in an oven, repeat filling and drying for 4 times, and the active component Pt- Ru-graphene is filled to the surface of polystyrene polymer foam pores;
[0048] (d) using the polymer foam filled in the step (c) as the cathode, immersed in the nickel electroplating solution 4, and carrying out electrochemical deposition tr...
Example Embodiment
[0051] Example 2
[0052] The catalyst preparation process is as follows:
[0053] (a) Preparation of polystyrene (1) macroporous polymer foam, the pore size of the polystyrene channels 2 is 20-40 μm. ;
[0054] (b) configure a metal active component aqueous solution, the active component is chloroplatinic acid-ruthenium nitrosyl nitrate-graphene aqueous solution 3, wherein the molar ratio is Pt:Ru=1:1.25, the active component is 5wt.%, and the graphite The content of alkene is 20%;
[0055] (c) Use a vacuum pump for vacuum filling until no air bubbles emerge from the surface of the polymer foam immersed in the aqueous solution of the metal active component, then dry in an oven, repeat filling and drying for 4 times, and the active component Pt- Ru-graphene is filled to the surface of polystyrene polymer foam pores;
[0056] (d) using the polymer foam filled in the step (c) as the cathode, immersed in the nickel electroplating solution 4, and carrying out electrochemical d...
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