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Method for preparing high-purity gallium nitrate from sponge gallium

A technology of gallium nitrate and sponge, applied in the field of preparing high-purity gallium nitrate from gallium sponge, can solve problems such as unfavorable large-scale application, poor economy, high raw material requirements, etc., and achieve the effects of low price, low production cost, and simple equipment and process flow

Pending Publication Date: 2022-07-08
ZHUHAI SEZ FANGYUAN
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Problems solved by technology

[0003] At present, the traditional method for preparing gallium nitrate has the following disadvantages: 1. High requirements for the raw materials used; 2. Poor economy, which is not conducive to large-scale application

Method used

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Embodiment Construction

[0022] In this embodiment, the present invention includes dissolving gallium sponge in sodium hydroxide and filtering to obtain sodium gallate solution, neutralizing in nitric acid to obtain gallium hydroxide precipitation, then dissolving in nitric acid and homogeneous precipitation in ammonia water to obtain pure hydrogen Gallium oxide is precipitated, pure gallium hydroxide is dissolved with nitric acid, and the gallium nitrate solution is evaporated and concentrated to obtain a gallium nitrate product.

[0023] Specific steps are as follows:

[0024] S1. Sponge gallium dissolution: add 100 g of sponge gallium and 180 mL of industrial sodium hydroxide solution with a concentration of 20% into the reaction kettle, react for 3 hours and filter to obtain a sodium gallate solution, and the mass fraction of gallium in the sponge gallium is 70%.

[0025] S2. Neutralization: 610 mL of a 5 mol / L nitric acid solution was added to the above sodium gallate solution to react for 1 hour...

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Abstract

The invention discloses a method for preparing high-purity gallium nitrate from sponge gallium, which is high in economical efficiency, simple and feasible in process, high in purity of a synthesized gallium oxide product and stable in quality. The method comprises the following steps: by taking sponge gallium as a gallium source, industrial sodium hydroxide as an alkali solvent, analytically pure nitric acid as an acid dissolving agent and analytically pure ammonia water as a precipitator, alkalizing the sponge gallium to form a sodium gallate solution, filtering the sodium gallate solution, taking clear liquid, filtering out precipitates, and adding nitric acid into the sodium gallate solution to obtain gallium hydroxide precipitates; and dissolving the precipitate with nitric acid to obtain a gallium salt solution, carrying out homogeneous precipitation, washing and redissolving to obtain a high-purity gallium nitrate precipitate, and concentrating and evaporating to obtain a gallium nitrate product. The method is applied to the technical field of chemical synthesis materials.

Description

technical field [0001] The invention relates to a method for preparing a gallium nitrate solution, in particular to a method for preparing high-purity gallium nitrate from gallium sponge. Background technique [0002] Gallium nitrate is a nitrate of gallium, which is widely used in the field of petroleum catalysis. In the preparation of catalysts, gallium nitrate can greatly increase the activity and selective function of the catalyst. In medicine, gallium nitrate can be used for the treatment of various diseases. [0003] At present, the traditional method for preparing gallium nitrate has the following disadvantages: 1. The requirements for the raw materials used are relatively high; 2. The economy is poor, which is not conducive to large-scale application. Therefore, if a method for producing gallium nitrate using waste gallium sponge electrolyzed in a gallium factory can be developed, the above shortcomings will be well resolved, and it will become an economical and pra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00
CPCC01G15/00C01P2006/80Y02P10/20
Inventor 纪晋岗吴新功吴义凯董银宽严海峰
Owner ZHUHAI SEZ FANGYUAN
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