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Method for preparing analytically pure basic cupric carbonate

A technology of copper carbonate and soda ash, which is applied in chemical instruments and methods, copper compounds, inorganic chemistry, etc., can solve the problems of low purity of basic copper carbonate, difficult to grasp the appearance color, high impurity content, etc., and the method is simple and easy to operate , the effect of low impurity content

Inactive Publication Date: 2010-11-17
TIANJIN CHEM REAGENT RES INST
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] Analysis of soda basic copper carbonate is widely used as an analytical reagent for organic catalysts. At present, the preparation method of basic copper carbonate is to treat copper-containing materials with ammonium carbonate ammonia water, stir them in air to make them react with nutrients, and treat them with steam and CO2 , to generate basic copper carbonate, which has low purity, high impurity content, and poor control of appearance and color, so it can only be used in the manufacture of copper salts

Method used

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Embodiment 1

[0017] A kind of preparation method of analyzing soda formula copper carbonate, concrete preparation method is as follows:

[0018] 1. Add 1kg of sodium bicarbonate into distilled water under constant stirring to prepare a solution with a relative concentration of 1.05g / L to obtain A1 sodium bicarbonate solution, and add 1.5kg of copper sulfate into distilled water under constant stirring to prepare a concentration of 1.08g / L solution, make A2 copper sulfate solution;

[0019] 2. Synthesis of basic copper carbonate

[0020] Heat the A1 sodium bicarbonate solution obtained in step 1 to 50°C, and slowly add it into the A2 copper sulfate solution obtained in step 1 under continuous stirring, and control the reaction temperature at 70°C. If the temperature is too high, black copper oxide will be produced, and at the same time pay attention to Control the adding progress of A2 copper sulfate solution, the color is difficult to grasp if it is too fast, the pH value is controlled a...

Embodiment 2

[0024] A kind of preparation method of analyzing soda formula copper carbonate, concrete preparation method is as follows:

[0025] 1. Add 1.5kg of sodium bicarbonate into distilled water under constant stirring to prepare a solution with a concentration of 1.10g / L to obtain A1 sodium bicarbonate solution, and add 1kg of copper sulfate into distilled water under constant stirring to prepare a solution with a concentration of 1.12g / L solution to prepare A2 copper sulfate solution.

[0026] 2. Synthesis of basic copper carbonate

[0027] Heat the A1 sodium bicarbonate solution obtained in step 1 to 55°C, slowly add the A2 copper sulfate solution obtained in step 1 under continuous stirring, and control the reaction temperature at 80°C if the temperature is too high, black copper oxide will be produced, and at the same time, pay attention to the control of A2 sulfuric acid The progress of adding the copper solution is too fast and the color is difficult to grasp. The pH value w...

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Abstract

The invention relates to a method for preparing analytically pure basic cupric carbonate. The method comprises the following steps of: (1) preparing sodium bicarbonate solution and copper sulfate solution; (2) synthesizing basic cupric carbonate, controlling pH values of the sodium bicarbonate solution and the copper sulfate solution to be between 8 and 8.05, and standing the solution for 4 to 5 hours after the reaction of the solution is finished to obtain sediment B; and (3) preparing the analytically pure basic cupric carbonate, namely pumping, washing and drying the sediment B prepared in the step (2) to obtain a finished product of the analytically pure basic cupric carbonate. The method prepares the analytically pure basic cupric carbonate by synthesizing sodium bicarbonate and copper sulfate and controlling the reaction temperature and synthetic feeding speed. The method can prepare the analytically pure basic cupric carbonate with high purity and low impurity content; and the method has the advantages of easy operation, simplicity and high production efficiency, and meets the market requirement.

Description

technical field [0001] The invention relates to the field of preparation methods of inorganic compounds, in particular to a preparation method of soda-type copper carbonate. Background technique [0002] Analysis of soda basic copper carbonate is widely used as an analytical reagent for organic catalysts. At present, the preparation method of basic copper carbonate is to treat copper-containing materials with ammonium carbonate ammonia water, stir them in air to make them react with nutrients, and treat them with steam and CO2 , to generate basic copper carbonate. The basic copper carbonate produced by this kind has low purity, high impurity content, and poor control of appearance and color, so it can only be used in the manufacture of copper salts. [0003] According to the search, a patent similar to this patent was found. Patent 200710047801 discloses a preparation method of basic copper carbonate, comprising the following process steps: Step 1, reacting the solid state o...

Claims

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Application Information

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IPC IPC(8): C01G3/00
Inventor 胡建华
Owner TIANJIN CHEM REAGENT RES INST
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