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Method for preparing W0.4Mo0.6O3 in short process and application thereof

A short process, resin technology, applied in the field of micro-nano materials, can solve the problem of uncontrollable physical and chemical characteristics of mixed oxides, and achieve the effect of realizing resource recycling, reducing burden and short process.

Pending Publication Date: 2021-12-31
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the direct reaction between molybdenum oxide and tungsten oxide requires a long time (5 days) for sintering, and wet impregnation, electrodeposition, and sputter deposition methods cannot control the physicochemical characteristics of mixed oxides, such as pore size and surface area.

Method used

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  • Method for preparing W0.4Mo0.6O3 in short process and application thereof
  • Method for preparing W0.4Mo0.6O3 in short process and application thereof
  • Method for preparing W0.4Mo0.6O3 in short process and application thereof

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Experimental program
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Effect test

Embodiment 1

[0037] This embodiment provides a short process to prepare W 0.4 Mo 0.6 o 3 method, the specific steps are as follows:

[0038] Weigh 8g of D201 resin (D201 macroporous strongly basic styrene-based anion exchange resin, brand: McLean), and finish pretreatment by alkali washing and pickling;

[0039] Prepare a mixed solution of sodium tungstate and sodium molybdate with a concentration of 0.30mol / L; adjust the pH to 3.5 with hydrochloric acid, and let it stand for 2 hours, so that the substance to be adsorbed exists in a specific form and exists stably, so as to improve the adsorption efficiency;

[0040] Add the pretreated resin to 50ml of the above mixed solution, add magnets and stir for 4 hours;

[0041] Transfer the adsorbed resin to the reactor, add deionized water, and calcinate at 232°C for 1 hour;

[0042] Rinse the resin that has been calcined once with deionized water several times, and place it in a drying oven to dry;

[0043] Take 0.5g of the dried resin in a...

Embodiment 2

[0048] This embodiment provides a short process to prepare W 0.4 Mo 0.6 o 3 method, the specific steps are as follows:

[0049] Weigh 8g of D201 resin, and complete the pretreatment by alkali washing and acid washing;

[0050] Prepare a mixed solution of sodium tungstate and sodium molybdate with a concentration of 0.30mol / L; adjust the pH to 3.5 with hydrochloric acid, and let it stand for 2 hours, so that the substance to be adsorbed exists in a specific form and exists stably, so as to improve the adsorption efficiency;

[0051] Add the pretreated resin to 50ml of the above mixed solution, add magnets and stir for 4 hours;

[0052] Transfer the adsorbed resin to the reactor, add deionized water, and calcinate at 232°C for 1 hour;

[0053] Rinse the resin that has been calcined once with deionized water, and place it in a drying oven to dry;

[0054] Take 0.5g of the dried resin in a crucible, place it in a muffle furnace for secondary calcination, the calcination tempe...

Embodiment 3

[0058] This embodiment provides a short process to prepare W 0.4 Mo 0.6 o 3 method, the specific steps are as follows:

[0059] Weigh 8g of D201 resin, and complete the pretreatment by alkali washing and acid washing;

[0060] Prepare a mixed solution of sodium tungstate and sodium molybdate with a concentration of 0.30mol / L; adjust the pH to 3.5 with hydrochloric acid, and let it stand for 2 hours, so that the substance to be adsorbed exists in a specific form and exists stably, so as to improve the adsorption efficiency;

[0061] Add the pretreated resin to 50ml of the above mixed solution, add magnets and stir for 4 hours;

[0062] Transfer the adsorbed resin to the reactor, add deionized water, and calcinate at 232°C for 1 hour;

[0063] Rinse the resin that has been calcined once with deionized water, and place it in a drying oven to dry;

[0064] Take 0.5g of the dried resin in a crucible, place it in a muffle furnace for secondary calcination, the calcination tempe...

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Abstract

The invention provides a method for preparing W0.4Mo0.6O3 in a short process and application thereof. The method comprises the following steps: adsorbing tungsten and molybdenum elements existing in an ion form in a solution by adopting resin, and calcining the adsorbed resin. Tungsten and molybdenum ions are adsorbed through the resin, tungsten and molybdenum do not need to be separated, and the tungsten and molybdenum oxide can be obtained through calcination. The process has the advantages of short flow, simplicity, feasibility, environment friendliness and the like. The obtained tungsten-molybdenum oxide product has good photocatalytic performance and can be widely applied to the fields of pollutant dye degradation and other semiconductor photocatalysis. In addition, the preparation process can realize resource circulation, reduce the burden of the environment, and provide a new thought for recycling and reusing the tungsten and molybdenum wastes.

Description

technical field [0001] The invention relates to the technical field of micro-nano materials, in particular to a short-process preparation of W 0.4 Mo 0.6 o 3 method and its application. Background technique [0002] Tungsten and molybdenum are two kinds of high-temperature-resistant metals, which have the characteristics of good thermal conductivity, electrical conductivity, low thermal expansion coefficient, high-temperature strength, low vapor pressure and wear resistance. Important materials for the manufacture of structural components, aerospace and defense industry applications. However, with the development of industry, there are more and more tungsten and molybdenum wastes. If they cannot be fully recycled, it will cause a great waste of resources. [0003] Molybdenum Tungsten Oxide W x Mo 1-x o 3 The (0<x<1) system exhibits "displacement" and "reconstruction" phase transitions due to hydrogen intercalation and high temperature, resulting in rearrangement...

Claims

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Application Information

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IPC IPC(8): C01G41/00B01J23/30
CPCC01G41/00B01J23/002B01J23/30C01P2002/72C01P2004/03C01P2004/62B01J35/39
Inventor 马立文刘亚男刘阳思席晓丽聂祚仁
Owner BEIJING UNIV OF TECH
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