Method for preparing nanometer powdered carbon for fertilizer

A technology of nano-carbon powder and nano-carbon sol, which is applied in the direction of nanotechnology, nanotechnology, and nanotechnology for materials and surface science, and can solve problems such as the inability to prepare ultra-fine carbon particles and the application of fertilizers in industrial production. Achieve the effect of increasing crop yield, low production cost and good dispersion

Inactive Publication Date: 2015-05-06
刘广安
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these known methods, the carbon particles in the resulting ultrafine carbon particle sol are re-agglomerated
Also, although it is possible to obtain nanoscale carbon particles in the form of a sol, it is impossible to prepare ultrafine carbon particles from a sol of ultrafine carbon particles, because if the carbon particles are separated by drying, these particles will re-agglomerate, resulting in It cannot be practically used in the form of carbon nanoparticles
[0007] In patent CN1294078C and patent CN1294079C, although nano-carbon sol and nano-carbon particles were obtained, the purpose of the invention was to obtain nano-carbon particles with a particle size as small as possible, and did not consider applying them to the industrial production of fertilizers middle

Method used

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  • Method for preparing nanometer powdered carbon for fertilizer
  • Method for preparing nanometer powdered carbon for fertilizer
  • Method for preparing nanometer powdered carbon for fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Take 3 high-purity graphite carbon plates (300mm×300mm×30mm, commercially available) as anode 1, cathode 2 and separator 6 respectively, according to figure 1 To form a system, the distance between the opposing surfaces of the anode 1 and the cathode 2 is 50 mm, and the separator 6 is arranged at equal intervals with the anode 1 and the cathode 2 . Pulse power supply 5 generates as figure 2 For the pulse voltage shown, the pulse frequency is 50Hz, and the effective voltage is 12V-15V.

[0053] Sodium chloride was added to deionized water to adjust the resistance of the solution so that when the effective value of the pulse voltage was 12V, the current of the system was 30A.

[0054] The pulse voltage was applied for 5 days to obtain a nano-carbon sol with a concentration of about 0.5% by weight.

[0055] Take 1 kg of the obtained nano carbon sol. 5 g KH 2 PO 4 The crystals are added to the above-mentioned nano-carbon sol at normal temperature, and mixed evenly, so...

Embodiment 2

[0057] Take 3 high-purity graphite carbon plates (300mm×300mm×30mm, commercially available) as anode 1, cathode 2 and separator 6 respectively, according to figure 1 To form a system, the distance between the opposing surfaces of the anode 1 and the cathode 2 is 50 mm, and the separator 6 is arranged at equal intervals with the anode 1 and the cathode 2 . Pulse power supply 5 generates as figure 2 For the pulse voltage shown, the pulse frequency is 50Hz, and the effective voltage is 12V-15V.

[0058] Sodium chloride was added to the deionized water to adjust the resistance of the solution so that when the effective value of the pulse voltage was 12V, the current of the system was 20A.

[0059] The pulse voltage was applied for 5 days to obtain a nano-carbon sol with a concentration of about 0.3% by weight.

[0060] Take 1 kg of the obtained nano carbon sol. 3 g KH 2 PO 4 The crystals are added to the above-mentioned nano-carbon sol at normal temperature, and mixed evenly...

Embodiment 3

[0067] The nano-carbon powder prepared in Example 1 is added into the urea nitrogen fertilizer at a ratio of 0.3% by weight, and the nano-carbon fertilizer can be obtained after mixing evenly. Applying the obtained nano-carbon fertilizer to field rice cultivation, compared with the application of ordinary urea nitrogen fertilizer that does not include nano-carbon, the fertilization amount of nano-carbon fertilizer only needs 70% of the original fertilization amount, while the rice yield has increased by 5% -15%.

[0068] It can be seen that the nano-carbon powder prepared by the method of the present invention can be applied to various fertilizers, thereby further increasing the yield of crops while reducing the amount of fertilizer applied.

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Abstract

The invention relates to a method for preparing nanometer powdered carbon for fertilizer. The method comprises the following steps of providing a system comprising an anode, a cathode, a separator plate and an electrolyte aqueous solution, wherein the anode, the cathode and the separator plate are prepared from high-purity graphite, connecting the anode and the cathode to a pulsed power supply with impulse frequency of 40-60Hz and effective voltage of 12-20V so that nanometer carbon sol is obtained, wherein effective current density formed between the anode and the cathode is in a range of 50 to 100A/m<2>, adding 0.3-1wt% of a potassium-containing compound into the nanometer carbon sol to obtain potassium ion-containing nanometer carbon gel, and drying the potassium ion-containing nanometer carbon gel to obtain the nanometer powdered carbon. The method can control nanometer powdered carbon particle size and yield by adjusting voltage and current so that the method is suitable for industrial production of fertilizer.

Description

technical field [0001] The invention relates to a method for preparing nanometer materials, in particular to a method for preparing nanometer carbon sol and further nanometer carbon powder by an electrode method. Background technique [0002] Nanomaterials refer to materials that have at least one dimension in the range of nanometer scale (0.1nm-100nm) in the space size of the components that make up the material. The special properties that ordinary size materials do not have have attracted extensive attention from the scientific and technological circles. The preparation and application technology of nanomaterials has become a new content of material research in the 21st century. [0003] A large number of studies have shown that when carbon is in the nanoscale range, it has many special properties that conventional size carbon materials do not have. It is widely used in electric heating materials, battery manufacturing, magnetic recording materials, agriculture, aviation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C01B31/02B82Y30/00
CPCB82Y30/00C01B32/05C25D11/024
Inventor 刘广安
Owner 刘广安
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