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Synthesis method of alpha-PbO

A synthesis method and surfactant technology, applied in the directions of lead monoxide, lead oxide, etc., can solve the problems of complex operation, difficult control and difficulty of solvothermal method, and achieve large-scale production, mild reaction conditions and simple operation. Effect

Inactive Publication Date: 2012-08-01
UNIV OF JINAN
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Problems solved by technology

The content of α-PbO in nature is very low and mining and separation are very difficult, so α-PbO is mainly artificially synthesized in the prior art: generally including baking method and solvothermal method, but solvothermal method is complicated to operate and difficult to control. It takes a long time (generally greater than 6h), requires high pressure conditions, and has certain requirements for the reaction vessel, and the obtained samples are doped with β-PbO or Pb 3 o 4 impurities, while the existing baking method has a higher temperature (generally above 380°C), and the sample is doped with β-PbO or Pb 3 o 4 Impurities reduce sample purity and are difficult to remove

Method used

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  • Synthesis method of alpha-PbO
  • Synthesis method of alpha-PbO

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Mix 20g of lead nitrate, 18g of urea and 0.5g of SDBS into the container, add 500g of double-distilled water into the container, and then continue to react in an oil bath at 85°C for 4 hours, and keep stirring during the reaction.

[0023] (2) The material obtained by the reaction was suction-filtered, washed three times with double distilled water and ethanol, and dried in a drying oven at 80° C. to obtain the precursor of α-PbO, that is, lead carbonate.

[0024] (3) Calcining the α-PbO precursor obtained in step (2) at 300° C. for 3 hours to obtain α-PbO.

[0025] The XRD powder diffraction characterization of gained sample, see appendix figure 1 .

Embodiment 2

[0027] The difference from Example 1 is that the calcination temperature of the α-PbO precursor obtained in step (3) is 360° C. to obtain α-PbO, and the other conditions are completely the same.

[0028] The XRD powder diffraction characterization of gained sample, see appendix figure 1 .

Embodiment 3

[0030] The difference from Example 1 is that the calcination temperature of the α-PbO precursor obtained in step (3) is 380° C. to obtain α-PbO, and the other conditions are completely the same.

[0031] The XRD powder diffraction characterization of gained sample, see appendix figure 1 .

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Abstract

The invention belongs to the technical field of artificial synthesis of natural minerals and particularly relates to an artificial synthesis method of alpha-PbO. According to the technical scheme, the synthesis method of alpha-PbO comprises the following steps that: 10g-25g of lead nitrate, 10g-30g of urea and 0-5g of surfactant are mixed and then are put into a container, 200g-500g of distilled water is added into the container, and the raw materials in the container react continually for 4-7 hours in oil bath at a temperature of 80-100 DEG C to obtain a precursor, wherein the raw materials are continually stirred in the reaction process and are metered in mass; and the obtained precursor is cured for 2-5 hours at a temperature of 300-410 DEG C. The alpha-PbO prepared by the synthesis method is high in purity and does not contain other impurities; and according to the synthesis method, the reaction conditions are mild, and feature equipment is not needed, thereby facilitating mass production.

Description

technical field [0001] The invention belongs to the technical field of artificial synthesis of natural minerals, in particular to an artificial synthesis method of α-PbO. Background technique [0002] α-PbO is an important industrial raw material with good semiconductor and optical properties. It is widely used in imaging equipment, electrophotography equipment, laser equipment, electrochemical cells, coatings and silicate glass. And it is also widely used in the manufacture of lead soap, metallurgical co-solvent, paint drier, ceramic raw material, rubber vulcanization accelerator, insecticide, raw material of lead salt plastic stabilizer and intermediate raw material of lead salt industry and many other aspects. The content of α-PbO in nature is very low and mining and separation are very difficult, so α-PbO is mainly artificially synthesized in the prior art: generally including baking method and solvothermal method, but solvothermal method is complicated to operate and d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G21/06
Inventor 孙中溪董传山范迎菊
Owner UNIV OF JINAN
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