Method for preparing copper molybdate by using cation membrane electrolysis method

A technology of cationic membrane and copper molybdate, which is applied in the direction of electrolysis process, electrolysis components, organic diaphragm, etc., can solve the problems of reaction time of additives, etc., and achieve the effect of easy operation, simple process and large synthesis amount

Inactive Publication Date: 2014-10-15
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solid-state metathesis method has a lot of metal oxide impurities due to the uniform mixing of raw materials; the disadvantages of the sol-gel method, aqueous phase precipitation method, hydrothermal method, microwave method, etc. are the presence of additives or the long reaction time

Method used

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  • Method for preparing copper molybdate by using cation membrane electrolysis method
  • Method for preparing copper molybdate by using cation membrane electrolysis method
  • Method for preparing copper molybdate by using cation membrane electrolysis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] With 95mL of 0.01mol / L sodium molybdate solution as anolyte, 90mL of 0.01mol / L sodium hydroxide solution as catholyte, copper sheet as anode and titanium mesh as cathode, electrolyze at a constant voltage of 50V for 10min. The electrolyzed product was washed three times with deionized water, and then dried in a blast drying oven at a constant temperature of 60°C for 2 hours. Raise the temperature to 500°C at a heating rate of min, then roast at constant temperature for 1h, and cool to room temperature naturally. The obtained product is tested for EDS and XRD, such as figure 1 and figure 2 .

[0029] By observing figure 1 From the EDS diagram, it can be obtained that there are only three elements of Cu, Mo and O in the product. By observing figure 2 In the XRD pattern, it can be confirmed that the obtained product is CuMoO 4 .

Embodiment 2

[0031] With 95mL of 0.01mol / L sodium molybdate solution as anolyte, 90mL of 0.01mol / L sodium hydroxide solution as catholyte, copper sheet as anode and titanium mesh as cathode, electrolyze 306S with a constant current of 0.6A (Electrolysis time is based on Na + The theoretical electricity consumed by all the ions transferred to the cathode chamber is calculated, that is, ). The electrolyzed product was washed three times with deionized water, and then dried in a blast drying oven at a constant temperature of 60°C for 2 hours. The temperature was raised to 500°C at a heating rate of 1 min, then roasted at a constant temperature for 1 h, and cooled to room temperature naturally. The obtained product is tested for EDS and XRD, such as image 3 .

[0032] By observing image 3 From the EDS diagram of (a), it can be obtained that there are only three elements of Cu, Mo, and O in the product. By observing image 3 The XRD pattern in (b), it can be confirmed that the obtaine...

Embodiment 3

[0034] With 95mL of 0.01mol / L sodium molybdate solution as anolyte, 90mL of 0.01mol / L sodium chloride solution as catholyte, copper sheet as anode and titanium mesh as cathode, electrolyze 306S with a constant current of 0.6A . Wash the electrolyzed product three times with deionized water, and then dry it in a blast drying oven at a constant temperature of 60°C for 2 hours. Put the product after repeated electrolytic drying in a muffle furnace, and heat it in an air atmosphere at 2.5°C / The temperature was raised to 500°C at a heating rate of 1 min, then roasted at a constant temperature for 1 h, and cooled to room temperature naturally. The obtained product is tested for EDS and XRD, such as Figure 4 .

[0035] By observing Figure 4 From the EDS diagram of (a), it can be obtained that there are only three elements of Cu, Mo, and O in the product. By observing Figure 4 The XRD pattern in (b), it can be confirmed that the obtained product is CuMoO 4 .

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Abstract

The invention discloses a method for preparing copper molybdate by using a cation membrane electrolysis method. A copper sheet serves as an anode; an inert electrode serves as a cathode; Na2MoO4.2H2O solution serves as anolyte; and solution with the pH range of 0-14 serves as catholyte. A cation membrane is adopted to electrolyze sodium molybdate solution, and the obtained product is dried after being cleaned. The dried product is roasted in high temperature to obtain pure copper molybdate crystals. The method uses the optimal effect of ion-exchange membrane electrolysis to transfer Na+ into a cathode chamber; the reaction time is short; no additive is added; the pure copper molybdate can be obtained; no impurity or impurity ion exist; and the subsequent treatment is simple. The method has the advantages of simplicity, easy operation and low investment cost, and can be directly applied to the industrialized batch production.

Description

Technical field [0001] The present invention is a field of inorganic materials, especially for a copper molybdenum acid. Specifically, it is a method that uses cedic membrane electrolytes to prepare copper molybdenum acid. technical background [0002] Metal molybdenum acid (M (Ⅱ) MOO 4 Magnetic performance, light -quality filler material, photocatalytic, chemical reactor, catalyst, etc. [0003] Copper copper has two crystal types, one is the sub -stable form of the octopus structure, and the other is the stable form of the tetraonal structure.The sub -stable copper molybdenum molybdenum becomes a stable form of copper molybdenum acid, which requires high temperature roasting. [0004] At present, the main methods of synthetic metal molybdenonate include solid-state multiplexing method, solid-gel method, water phase precipitation method, water heat method, microwave method, etc.However, the solid-state complexation method has a lot of metal oxide impurities due to uniform raw ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/00C25B13/08
Inventor 张全生闵凡奇王昭勍李硕李细方李海燕王淼党国举
Owner SHANGHAI INST OF TECH
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