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Preparation method of porous-graded sphere activated copper oxide powder

An active copper oxide, graded technology, applied in copper oxide/copper hydroxide and other directions, can solve the problems of increasing process difficulty and wastewater treatment difficulty, complicated solution preparation, complicated equipment and process, etc., and the reaction end point is easy to control and process Simple operation and lower operating costs

Active Publication Date: 2017-05-17
XIAN TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the preparation of traditional active copper oxide powder: the preparation of the solution is relatively complicated and even requires complex equipment and processes (for example, patent application number CN201010207485.3; 201410612009.8); product
In the active copper oxide preparation process, many processes have used ammonia (such as patent application number 201210336633.0; CN201210559066.5; 201410550840.5; CN201410721949.0) or surfactants (patent application number CN201210123571.5), which increases the process Difficulty and Difficulty of Wastewater Treatment

Method used

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  • Preparation method of porous-graded sphere activated copper oxide powder
  • Preparation method of porous-graded sphere activated copper oxide powder
  • Preparation method of porous-graded sphere activated copper oxide powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Weigh 107.2g CuCl 2 ·H 2 O was dissolved in pure water to make a 1L solution (Cu 2+ Concentration is 40g / L), weigh 106gNaHCO 3 Dissolve in pure water to make 1.2L solution (Na + ion concentration 24.5g / L), the NaHCO 3 Add the solution into a 3L beaker, stir it mechanically, preheat to 85°C and keep the reaction temperature, add CuCl 2 Solution, added within 30min, pH=7. Aging for half an hour.

[0043] Suction filtration, 50mL pure water washing 3 times.

[0044] The washed powder is dried and thermally decomposed to obtain porous graded spherical activated copper oxide.

[0045] The drying temperature is 120°C, and the thermal decomposition temperature is 400°C.

Embodiment 2

[0047] Weigh 266.4g Cu(NO 3 ) 2 ·3H 2 O was dissolved in pure water to make a 1L solution (Cu 2+ Concentration is 70g / L), weigh 118.5gNa 2 CO 3 Dissolve in pure water to make 1.2L solution (Na + ion concentration 43g / L), the Na 2 CO 3 Add the solution into a 3L beaker, stir it mechanically, preheat to 75°C and keep the reaction temperature, add Cu(NO 3 ) 2 Solution, added within 30min, pH=7. Aging for half an hour.

[0048] Suction filtration, 50mL pure water washing 3 times.

[0049] The washed powder is dried and thermally decomposed to obtain porous graded spherical activated copper oxide.

[0050] The drying temperature is 120°C, and the thermal decomposition temperature is 400°C.

Embodiment 3

[0052] Weigh 236g Cu(SO 4 ) 2 ·5H 2 O was dissolved in pure water to make a 1L solution (Cu 2+ Concentration is 60g / L), take by weighing 19.2g sodium hydroxide and 51.2g Na respectively 2 CO 3 Dissolve in pure water to make 1.2L solution (Na + ion concentration of 36.8g / L), the above-mentioned alkaline mixed solution was added to a 3L beaker, mechanically stirred, preheated to 65°C and kept at the reaction temperature, adding Cu(SO 4 ) 2 Solution, added within 30min, pH=7. Aging for half an hour.

[0053] Suction filtration, 50mL pure water washing 3 times.

[0054] The washed powder is dried and thermally decomposed to obtain porous graded spherical activated copper oxide.

[0055] The drying temperature is 120°C, and the thermal decomposition temperature is 400°C.

[0056] see figure 2 , which is the SEM picture of the best embodiment 2, as can be seen from the figure, the product appearance is a microrod (diameter 500nm, length 2μm, such as figure 2 Shown in b) ...

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Abstract

The invention belongs to the technical field of rapid and effective preparation of porous-graded sphere activated copper oxide, and particularly relates to a preparation method of porous-graded sphere activated copper oxide powder. The method includes: 1), preparing a copper salt solution to enable copper ions in the copper salt solution to be 40-80g / L in concentrate; 2), preparing alkali liquor to enable sodium ions in the alkali liquor to be 20-60g / L in concentrate; 3), under the temperature of 60-90DEG C, stirring the copper salt solution for 20-30 minutes in the inner side and adding the copper salt solution to the alkali liquor for reaction to be neutral, namely pH=7, and then performing ageing for 25-35 minutes; 4), performing suction filtration, namely washing with pure water for three times; 5), performing drying and heating decomposition to obtain the porous-graded sphere activated copper oxide.

Description

[0001] 1. Technical field [0002] The invention belongs to the technique of quickly and efficiently preparing porous graded spherical activated copper oxide by an ammonia-free method, and in particular relates to a preparation method of porous graded spherical activated copper oxide powder. [0003] 2. Background technology: [0004] At present, the size of copper oxide powder in the field of catalysis is generally required to be at the nanometer level, and only this scale of copper oxide has a high specific surface area (20-50m 2 / g), but the preparation process of nano-copper oxide powder is complicated, the production capacity is small, and it is easy to agglomerate, and surfactants are generally added, which will reduce the purity and catalytic activity of copper oxide, and organic solvents must be added during washing. [0005] The process of preparing copper oxide powder is too complicated, the environment is seriously polluted, and the obtained copper oxide has a high c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02
CPCC01G3/02C01P2002/72C01P2004/03C01P2004/04C01P2004/16C01P2004/50C01P2004/61C01P2006/10C01P2006/12C01P2006/80
Inventor 唐宽镇高玲扈琳
Owner XIAN TECH UNIV
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