Preparation method for titanium plate loaded palladium nanoparticle catalyst

A catalyst, palladium nanotechnology, applied in the field of preparation of palladium nanocatalysts, can solve the problems of easy falling off of catalyst active substances, affecting catalytic performance, poor corrosion resistance, etc., and achieve the effects of uniform size, enhanced stability and high catalytic activity

Inactive Publication Date: 2017-06-09
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 for titanium plate loaded palladium nanoparticle catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Etching the titanium plate in a boiling 20wt% oxalic acid solution for 1 hour, washing and drying with alcohol, and obtaining the etched titanium plate;

[0026] (2) Ultrasonically dissolve palladium acetate in absolute ethanol to obtain solution A with a concentration of 1g / 10mL; ultrasonically dissolve oleic acid in absolute ethanol to obtain solution B with a concentration of 1g / 10mL;

[0027] (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 is 1:1;

[0028] (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;

[0029] (5) Put the substance D into a corundum ceramic boat, transfer it to a tube furnace, and pass in argon gas for protection, then raise the temperature to 180°C at a rate of 2°C / min at ...

Embodiment 2

[0032] (1) Etching the titanium plate in a boiling oxalic acid solution with a mass fraction of 60wt% for 2 hours, washing and drying with alcohol to obtain the etched titanium plate;

[0033] (2) Ultrasonically dissolve palladium dichloride in absolute ethanol to obtain solution A with a concentration of 1g / 10mL; ultrasonically dissolve potassium oleate in ethylene glycol to obtain solution B with a concentration of 1g / 10mL;

[0034] (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 potassium oleate to palladium dichloride is 10:1;

[0035] (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;

[0036] (5) Put the substance D into a corundum ceramic boat, transfer it to a tube furnace, pass in nitrogen gas for protection, then raise the temper...

Embodiment 3

[0038] (1) Etching the titanium plate in a boiling oxalic acid solution with a mass fraction of 40wt% for 1 hour, washing and drying, to obtain the etched titanium plate;

[0039] (2) Ultrasonically dissolve sodium tetrachloropalladate in ethylene glycol to obtain solution A with a concentration of 1g / 10mL; ultrasonically dissolve sodium oleate in ethylene glycol to obtain solution B with a concentration of 1g / 10mL;

[0040] (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 sodium oleate to sodium tetrachloropalladate is 5:1;

[0041] (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;

[0042] (5) Put the substance D into a corundum ceramic boat, transfer it to a tube furnace, and pass in nitrogen gas for protection, then raise the temperatur...

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Abstract

The invention discloses a preparation method of a titanium plate loaded palladium nanoparticle catalyst. A titanium plate is taken as a carrier, palladium chloride is taken as a precursor, gel is formed by adding oleic acid or oleate and is then evenly sprayed on the titanium plate, and the titanium plate loaded palladium nanoparticle catalyst is obtained by insulation treatment under the 180-350DEG C gas protection for 0.5-2 hours. Compared with a traditional thermal decomposition method, the preparation method has the advantages that thermal decomposition temperature can be remarkably reduced, obtained Pd particles are uniform in particle, the average particle diameter is smaller than 10nm, the Pd particles can be uniformly dispersed on the titanium plate, high catalytic activity on alcohol fuels of ethyl alcohol, methyl alcohol and the like is achieved, raw materials are easy to obtain, simpleness in operation method is achieved, and requirements of industrialization production can be reached.

Description

technical field [0001] The invention belongs to the technical field of preparation of catalysis and energy industry materials, and in particular relates to a preparation method of a palladium 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): H01M4/88H01M4/92H01M8/1011
CPCH01M4/8803H01M4/8828H01M4/8882H01M4/921H01M4/925H01M8/1011H01M8/1013Y02E60/50Y02P70/50
Inventor 张腾张心愿魏颖李巍婷温翠莲唐电
Owner FUZHOU UNIV
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