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Application method of nanometer copper oxide

A technology of nano-copper oxide and application method, applied in chemical instruments and methods, copper oxide/copper hydroxide, nanotechnology, etc., can solve the problems of low purity of nano-copper oxide, complicated preparation method, and decreased desulfurization performance. The effect of promotion and implementation, simple preparation process and low production cost

Inactive Publication Date: 2009-05-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Desulfurization at room temperature can save a lot of energy, but because it is difficult for reactants to break through the energy barrier at room temperature, only substances with special physical and chemical properties can achieve the control target of desulfurization at room temperature. The desulfurization performance will be significantly reduced or even inactive at room temperature; moreover, most of the desulfurizers currently on the market increase the reactivity through doping and loading, and the preparation methods are often complicated and the sulfur capacity is low.
Moreover, there has been no report on using a single nano-copper oxide as a desulfurizer at room temperature so far.
[0003] The purity of nano-copper oxide produced by the current nano-copper oxide preparation method is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0008] Specific Embodiment 1: In this embodiment, nano-copper oxide is used as a normal temperature desulfurization agent, and nano-copper oxide is the only component of the normal temperature desulfurization agent.

specific Embodiment approach 2

[0009] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the particle size of the nano-copper oxide is 10-30 nm. Others are the same as the first embodiment.

[0010] In this embodiment, a comparative desulfurization experiment is carried out under the conditions of normal temperature (25-30° C.) and 1 standard atmospheric pressure, and the experimental data are shown in Table 1.

[0011] Table 1

[0012]

[0013] The desulfurization comparison experiment data shows that the nano-copper oxide in this embodiment has an excellent desulfurization effect at room temperature (25-30° C.). In this embodiment, the nano-copper oxide is at room temperature (25-30°C) and the space velocity is 7000h -1 It still has high desulfurization accuracy and sulfur capacity under certain conditions, the desulfurization accuracy can reach 0.5ppm, and the sulfur capacity can reach more than 10%.

specific Embodiment approach 3

[0014] Specific embodiment three: In this embodiment, nano-copper oxide is prepared according to the following steps: (1) using water-ethanol liquid with a volume ratio of 1:0.5~3 as a solvent, copper nitrate as a solute, and preparing a concentration of 0.2mol / L Copper nitrate solution; (2) adding sodium hydroxide to the copper nitrate solution according to 2.0 to 2.2 times the molar number of copper ions in the copper nitrate solution, and stirring for 0.5 to 1 h, then standing for 1 ± 0.1 h; (3) filtering, The solid phase is washed with deionized water for 5 to 8 times, and then dried in an environment of 60±2°C for 1 to 2 hours; (4) The dried solid phase is roasted at 185 to 260°C for 1±0.1h , that is, to obtain nano-copper oxide with a particle diameter of 10-30 nm.

[0015] The nano-copper oxide prepared in this embodiment is detected by X-ray, and its particle size is 10-40nm, wherein more than 95% of the nano-copper oxide particles have a particle size smaller than 30n...

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Abstract

The invention relates to an application of nanometer copper oxide and the preparing method, belonging to an application of compound and the preparing method. Before the invention, there are not reports that single nanometer copper oxide is used as ambient temperature desulfurizer and the purity of nanometer copper oxide prepared by prior preparing method for nanometer copper oxide is low. In the invention, the nanometer copper oxide is used as the ambient temperature desulfurizer and the nanometer copper oxide is the only component of ambient temperature desulfuizer. The preparation of nanometer copper oxide is that sodium hydroxide is added in the copper nitrate solution and then it is filtered, dried and baked or the preparation of nanometer copper oxide is that sodium hydroxide is added in the copper nitrate solution and then it is filtered and dried. The desulfurization accuracy of nanometer copper oxide in the invention is high in ambient temperature condition and the sulfur capacity is high to 18.3%-28.7%. The purity of nanometer copper oxide prepared in the invention is higher than 99.9%. It is provided with simple preparing process, low demand for machining equipment, small energy consumption and low production cost. It is easy to be developed and implemented.

Description

technical field [0001] The present invention relates to the application of a compound and its preparation method. Background technique [0002] Hydrogen sulfide gas is extremely harmful to industrial equipment and the environment, and needs to be controlled in production and life. Desulfurizers are widely used in chemical industry, metallurgy, electronics, textiles, machinery, aerospace, environmental protection and other fields. Desulfurizers can be divided into high temperature desulfurizers, medium and low temperature desulfurizers and normal temperature desulfurizers according to the application temperature. Desulfurization at room temperature can save a lot of energy, but because it is difficult for reactants to break through the energy barrier at room temperature, only substances with special physical and chemical properties can achieve the control target of desulfurization at room temperature. Under normal temperature conditions, the desulfurization performance will ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14C01G3/02B82B3/00B01D53/52
Inventor 闫波王新邵纯红李芬姜蔚徐桂芹姜安玺
Owner HARBIN INST OF TECH
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