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Preparation method of palladium ruthenium catalyst loaded by titanium plate

A technology of ruthenium catalyst and titanium plate, which is applied in the field of palladium ruthenium nano-catalyst preparation, can solve the problems of poor corrosion resistance, influence on catalytic performance, and easy falling off of catalyst active substances, and achieve the advantages of easy availability of raw materials, uniform size, and enhanced stability Effect

Inactive Publication Date: 2017-05-31
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the poor corrosion resistance of the traditional carbon material carrier, the catalyst active material loaded on it is easy to fall off during the process of serving as a catalyst carrier, which affects its catalytic performance.

Method used

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  • Preparation method of palladium ruthenium catalyst loaded by titanium plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Etch the titanium plate in a boiling 60wt% oxalic acid solution for 1 hour, wash and dry with alcohol, and obtain the etched titanium plate;

[0027] (2) Ultrasonically mix palladium acetate and ruthenium iodide in absolute ethanol to obtain a solution A with a concentration of both palladium acetate and ruthenium iodide at 1g / 10mL; ultrasonically dissolve oleic acid in absolute ethanol to obtain a solution A with a concentration of 1g / 10mL of solution B;

[0028] (3) Stir solution B, and add solution A dropwise to solution B, then stir and mix for 1 hour to obtain colloidal solution C; wherein the molar ratio of oleic acid to palladium acetate and ruthenium iodide is 1:1:1;

[0029] (4) According to the coating amount of 1g / m 2 Apply colloidal solution C evenly on the etched titanium plate, put it in a drying oven, and dry at 60°C for 2 hours to obtain substance D;

[0030] (5) Put the substance D into a corundum ceramic boat, transfer it to a tube furnace, pass...

Embodiment 2

[0033] (1) Etch the titanium plate in a boiling 40wt% oxalic acid solution for 1 hour, wash and dry with alcohol, and obtain the etched titanium plate;

[0034] (2) Ultrasonically mix palladium dichloride and ruthenium trichloride in absolute ethanol to obtain a solution A with a concentration of 1 g / 10 mL of both palladium dichloride and ruthenium trichloride; ultrasonically dissolve potassium oleate in ethylene dichloride In alcohol, a solution B with a concentration of 1g / 10mL was obtained;

[0035] (3) Stir solution B, and add solution A dropwise to solution B, then stir and mix for 2 hours to obtain colloidal solution C; wherein the molar ratio of potassium oleate to palladium dichloride and ruthenium trichloride is 10: 1:1;

[0036] (4) According to the coating amount of 10g / m 2 Apply colloidal solution C evenly on the etched titanium plate, put it in a drying oven, and dry at 60°C for 2 hours to obtain substance D;

[0037] (5) Put the substance D into a corundum cer...

Embodiment 3

[0039] (1) Etch the titanium plate in a boiling 20wt% oxalic acid solution for 2 hours, wash and dry with alcohol, and obtain the etched titanium plate;

[0040] (2) Ultrasonically mix palladium acetate and ruthenium acetate in ethylene glycol to obtain a solution A with a concentration of 1 g / 10 mL of both palladium acetate and ruthenium acetate; ultrasonically dissolve sodium oleate in ethylene glycol to obtain a solution A with a concentration of 1 g / 10 mL. 10 mL of solution B;

[0041] (3) Stir solution B, and add solution A dropwise to solution B, then stir and mix for 4 hours to obtain colloidal solution C; wherein the molar ratio of sodium oleate to palladium acetate and ruthenium acetate is 5:1:1;

[0042] (4) According to the coating amount of 5g / m 2 Apply colloidal solution C evenly on the etched titanium plate, put it in a drying oven, and dry at 60°C for 2 hours to obtain substance D;

[0043] (5) Put the substance D into a corundum ceramic boat, transfer it to a...

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Abstract

The invention discloses a preparation method of a palladium ruthenium catalyst loaded by a titanium plate. The preparation method comprises the following steps: by adopting the titanium plate as a carrier and adopting palladium salt and ruthenium salt as precursors, adding oleic acid or oleate for forming a jelly, then uniformly coating the titanium plate with the jelly, and carrying out insulation treatment for 0.5h to 2h under protection gas at the temperature of 160 to 320 DEG C, thus obtaining the palladium ruthenium catalyst loaded by the titanium plate. Compared with a traditional thermal decomposition method, according to the method provided by the invention, the thermal decomposition temperature can be remarkably reduced, obtained palladium ruthenium particles are uniform in size, the average particle size is below 10nm, and the palladium ruthenium can be dispersed on the titanium plate uniformly, so that higher catalytic activity can be realized on ethyl alcohol, methyl alcohol and other alcohol fuels. The raw materials are easy to get, the operation method is simple and convenient, and the preparation method can meet the requirement on industrialized production.

Description

technical field [0001] The invention belongs to the field of preparation of catalysis and energy industry materials, and in particular relates to a preparation method of a palladium ruthenium nano-catalyst supported by a titanium plate. Background technique [0002] With the intensification of the global energy crisis, new energy sources have attracted widespread attention from society. Direct alcohol fuel cells (DMFCs / DEFCs) are electrochemical reaction devices that can directly convert the chemical energy of fuel into electrical energy, and have the advantages of low operating temperature, high energy density and environmental friendliness. In terms of fuel cells, the catalytic efficiency of platinum catalysts is high, but the resource shortage of noble metal platinum makes it expensive and increases the cost of fuel cells. Therefore, palladium is considered as a key material for low-platinum or even platinum-free catalysts. [0003] However, due to the poor corrosion re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90
CPCH01M4/8803H01M4/9041Y02E60/50
Inventor 张腾张心愿魏颖李巍婷温翠莲唐电
Owner FUZHOU UNIV