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La2CuO4 catalyst material of nanometer structure and preparation method and application thereof

A nanostructure and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve lower reaction temperature, better catalytic performance, and simple synthesis process Effect

Pending Publication Date: 2019-05-24
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

La 2 CuO 4 With good catalytic activity and thermal stability, it can replace noble metals as cheap catalysts; 2 CuO 4 The research on it mainly focuses on its superconductivity and catalytic elimination of harmful gases, but there are few reports on its photocatalytic water splitting and hydrogen energy production.

Method used

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  • La2CuO4 catalyst material of nanometer structure and preparation method and application thereof
  • La2CuO4 catalyst material of nanometer structure and preparation method and application thereof
  • La2CuO4 catalyst material of nanometer structure and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Weigh 0.866gLa (NO 3 ) 3 ·6H 2 O, 0.242gCu (NO 3 ) 2 ·3H 2 O, 0.288gSDS and 0.005gCNTs were prepared with 50mL deionized water to prepare solution A, and ultrasonically dispersed for 5h; weighed 0.64gNaOH and prepared with 30mL deionized water to prepare solution B, and ultrasonically dispersed for 10min;

[0032](2) Under stirring conditions, add solution B dropwise to solution A to form precursor solution C, heat and stir at 60°C for 30 minutes; transfer precursor solution C to a polytetrafluoroethylene reactor and put it in an oven Medium heating reaction 6h, the temperature is 140 ℃;

[0033] (3) Take out the reacted product, filter out the precipitate, wash with deionized water and absolute ethanol respectively, and centrifuge three times to obtain the precipitate; heat the precipitate in an oven for 6 hours at 80°C, collect and obtain black product;

[0034] (4) Put the black product into a tube furnace for calcination, the calcination time is 3 hours, ...

Embodiment 2

[0038] (1) Weigh 0.866gLa (NO 3 ) 3 ·6H 2 O, 0.242gCu (NO 3 ) 2 ·3H 2 O, 0.288gSDS and 0.005gCNTs were prepared with 50mL deionized water to prepare solution A, and ultrasonically dispersed for 5h; weighed 0.8gNaOH and prepared with 30mL deionized water to prepare solution B, and ultrasonically dispersed for 10min;

[0039] (2) While stirring, add solution B dropwise to solution A to form precursor solution C, heat and stir at 60°C for 30 minutes; transfer precursor solution C to a polytetrafluoroethylene reactor and put it in an oven Medium heating reaction for 5h, the temperature is 160°C;

[0040] (3) Take out the reacted product, filter out the precipitate, wash with deionized water and absolute ethanol respectively, and centrifuge three times to obtain the precipitate; heat the precipitate in an oven for 6 hours at 80°C, collect and obtain black product;

[0041] (4) Put the black product into a tube furnace for calcination, the calcination time is 3 hours, the cal...

Embodiment 3

[0044] The invention provides a methanol decomposition hydrogen production device, the structure of the device is as follows image 3 As shown, it can be seen from the figure that the device includes a steam generating tank 1, a pipeline, and a condensate collecting tank 6; the pipeline includes a heating catalytic section 3 in the middle, a mixed steam introduction section 2 at both ends, and a reaction gas condensation section 5; wherein, the pipe body of the mixed steam introduction section 2 is covered with a thermal insulation protection layer, the heating and catalytic section 3 includes a heating section and a catalytic reaction section located in the heating section and close to the rear end of the heating section, and the catalytic reaction section is filled with The catalyst 4; the gas outlet of the reaction gas condensation section 5 is connected to the gas collection bag, and a condensate recovery branch pipe is arranged near the gas outlet, and the outlet of the br...

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Abstract

The invention discloses a La2CuO4 catalyst material of a nanometer structure and a preparation method and application thereof. By adding lanthanum nitrate, copper nitrate, lauryl sodium sulfate and acarbon nano tube into deionized water, ultrasonic dispersion is performed for 3-10 h, and a solution A is obtained; sodium hydroxide is added into deionized water, then, ultrasonic dispersion is performed for 5-20 min, and a solution B is obtained; the solution B is added into the solution A dropwisely to obtain a precursor solution; the precursor solution is heated to 50-80 DEG C for 30-60 min; the precursor solution is placed under the temperature of 140-180 DEG C for a heating reaction for 5-12 h, reaction products are washed and centrifuged, and the obtained black precipitates are dried; the dried black precipitates are placed into a tube furnace to be calcinated, and the La2CuO4 catalyst material of the nanometer structure is obtained. The method is simple and suitable for industrialproduction, when the obtained catalyst material is used for methyl alcohol catalytic decomposition and hydrogen production, the needed reaction temperature is lower, and the catalytic performance is better.

Description

technical field [0001] The invention belongs to the field of nanomaterial science, in particular to a nanostructured La 2 CuO 4 Catalyst material, preparation method and application of the material in hydrogen production by catalytic decomposition of methanol. Background technique [0002] With the rapid development of economy and society, human beings are facing more and more threats of energy shortage and environmental damage. Therefore, it is urgent to develop renewable energy to ensure the sustainable development of human society. Since the combustion of hydrogen produces only H 2 O, no pollution to the environment, and H 2 The energy generated by combustion is very high, therefore, hydrogen energy is a clean and efficient renewable energy. The biggest obstacle to the utilization of hydrogen is its storage and distribution difficulties, H 2 As a gas, it will inevitably occupy a large amount of space during storage, and the requirements for storage devices are also v...

Claims

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Application Information

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IPC IPC(8): C01G3/00B01J23/83B82Y30/00
Inventor 方俊飞苟于春
Owner SHAANXI SCI TECH UNIV
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