CN-119920915-B - Catalyst, preparation method and application thereof

CN119920915BCN 119920915 BCN119920915 BCN 119920915BCN-119920915-B

Abstract

The application discloses a catalyst, a preparation method and application thereof, and belongs to the technical field of batteries. The catalyst provided by the application uses urea, polyethylene glycol, boric acid and nickel nitrate as reaction raw materials, and compared with a noble metal catalyst, the reaction raw materials are cheap and easy to obtain, so that the preparation cost of the catalyst can be reduced. And the catalyst can be obtained by firing the above reaction raw materials at high temperature in a tube furnace, so that the preparation method of the catalyst is simple and easy to operate.

Inventors

XU LIANG
ZHANG XINYU
Que Zhuo
YANG XINXIN

Assignees

奇瑞汽车股份有限公司

Dates

Publication Date: 20260505
Application Date: 20250123

Claims (8)

1. A method of preparing a catalyst, the method comprising: uniformly mixing urea, polyethylene glycol, boric acid and nickel nitrate to obtain a mixture, wherein the mass part of urea solid is 11 parts, the mass part of polyethylene glycol solid is 1 part, the mass part of boric acid solid is 0.3 part, and the mass part of nickel nitrate solid is 0.005-0.25 part; The mixture is put into a crucible and is fired in a tube furnace filled with argon, wherein the firing temperature is 690-710 ℃ and the firing time is 130-140 min; after the firing time is up, preserving heat for 235-245 min, and cooling to room temperature to obtain a catalyst to be cleaned; and washing the catalyst to be cleaned by adopting ultrapure water for a plurality of times, putting the washed catalyst into a vacuum drying oven, drying at 38-42 ℃ for 24 hours, and taking out to obtain the catalyst.
2. The method of claim 1, wherein the step of uniformly mixing urea, polyethylene glycol, boric acid, and nickel nitrate to obtain a mixture comprises: respectively grinding urea solid, polyethylene glycol solid, boric acid solid and nickel nitrate solid into powder to obtain urea powder, polyethylene glycol powder, boric acid powder and nickel nitrate powder; And uniformly mixing the urea powder, the polyethylene glycol powder, the boric acid powder and the nickel nitrate powder to obtain the mixture.
3. The method of claim 1, wherein the step of uniformly mixing urea, polyethylene glycol, boric acid, and nickel nitrate to obtain a mixture comprises: uniformly mixing urea solid, polyethylene glycol solid, boric acid solid and nickel nitrate solid to obtain a mixed solid; grinding the mixed solid into powder to obtain the mixture.
4. The method of claim 1, wherein the firing temperature is 700 ℃.
5. The method of claim 1, wherein the firing time is 135 minutes.
6. The method of claim 1, wherein the polyethylene glycol has a molecular weight of 2000.
7. A catalyst, characterized in that it is prepared by the preparation method according to any one of claims 1 to 6.
8. Use of a catalyst prepared by the preparation method of any one of claims 1 to 6 for catalyzing the conversion of 5-hydroxymethylfurfural to 2, 5-furandicarboxylic acid.

Description

Catalyst, preparation method and application thereof Technical Field The application relates to the technical field of batteries, in particular to a catalyst, a preparation method and application thereof. Background With the development of new energy vehicles, the service life of the battery is directly influenced by the discharging performance of the battery, and further the endurance mileage of the vehicle is influenced. Wherein, 2, 5-furandicarboxylic acid (FDCA) can enhance the discharge performance of a battery, and FDCA can be obtained by catalytic oxidation of 5-Hydroxymethylfurfural (HMF) under the action of a catalyst. Thus, it is important to prepare a catalyst that can catalyze the conversion of HMF to FDCA. The catalysts in the related art are mainly noble metal catalysts such as platinum, gold and alloys thereof, but the preparation cost of the noble metal catalysts is high. Disclosure of Invention The embodiment of the application provides a catalyst, a preparation method and application thereof, and can reduce the preparation cost of the catalyst. The technical scheme is as follows: In one aspect, a method for preparing a catalyst is provided, the method comprising: Uniformly mixing urea, polyethylene glycol, boric acid and nickel nitrate to obtain a mixture; The mixture is put into a crucible and is fired in a tube furnace filled with argon, wherein the firing temperature is 690-710 ℃ and the firing time is 130-140 min; And after the firing time is up, preserving heat for 235-245 min to obtain the catalyst. In one possible implementation manner, the urea is 11 parts by weight, the polyethylene glycol is 1 part by weight, the boric acid is 0.3 part by weight, and the nickel nitrate is 0.005-0.25 part by weight. In another possible implementation manner, the uniformly mixing urea, polyethylene glycol, boric acid and nickel nitrate to obtain a mixture includes: respectively grinding urea solid, polyethylene glycol solid, boric acid solid and nickel nitrate solid into powder to obtain urea powder, polyethylene glycol powder, boric acid powder and nickel nitrate powder; And uniformly mixing the urea powder, the polyethylene glycol powder, the boric acid powder and the nickel nitrate powder to obtain the mixture. In another possible implementation manner, the uniformly mixing urea, polyethylene glycol, boric acid and nickel nitrate to obtain a mixture includes: uniformly mixing urea solid, polyethylene glycol solid, boric acid solid and nickel nitrate solid to obtain a mixed solid; grinding the mixed solid into powder to obtain the mixture. In another possible implementation manner, after the firing time is reached, the heat is preserved for 235-245 min, so as to obtain a catalyst, which comprises: after the firing time is up, preserving heat for 235-245 min, and cooling to room temperature to obtain a catalyst to be cleaned; And washing the catalyst to be cleaned by adopting ultrapure water for a plurality of times, putting the washed catalyst into a vacuum drying oven, drying at 38-42 ℃ for 24 hours, and taking out to obtain the catalyst. In another possible implementation, the firing temperature is 700 ℃. In another possible implementation, the firing time is 135 minutes. In another possible implementation, the polyethylene glycol has a molecular weight of 2000. In another aspect, a catalyst is provided, the catalyst being prepared using the preparation method of any one of the above. In another aspect, there is provided the use of a catalyst prepared by any one of the above methods for catalyzing the conversion of 5-hydroxymethylfurfural to 2, 5-furandicarboxylic acid. The embodiment of the application provides a catalyst, which takes urea, polyethylene glycol, boric acid and nickel nitrate as reaction raw materials, and compared with a noble metal catalyst, the catalyst has the advantages that the raw materials are cheap and easy to obtain, so that the preparation cost of the catalyst can be reduced. And the catalyst can be obtained by firing the above reaction raw materials at high temperature in a tube furnace, so that the preparation method of the catalyst is simple and easy to operate. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed. Reference numerals FIG. 1 is a flow chart of a method for preparing a catalyst according to an embodiment of the present application; FIG. 2 is a schematic diagram of the conversion of HMF to FDCA according to an embodiment of the present application; FIG. 3 is a schematic view of an LSV curve provided by an embodiment of the application; fig. 4 is a schematic diagram of an LSV curve according to an embodiment of the present application. Detailed Description The following description of the embodiments of the present application will be made clearly and completely, and it is apparent that the described embodiments