Nano zero-valent iron-nickel composite material prepared on basis of laterite-nickel ore and preparation method of nano zero-valent iron-nickel composite material

A nano-zero-valent iron and laterite nickel ore technology is applied in the fields of nanotechnology, nanotechnology, nanotechnology and other fields for materials and surface science, which can solve the problems of low activity of granular materials and complex processes, and achieve low production cost, The effect of high reaction efficiency and improved catalytic oxidation capacity

Active Publication Date: 2020-01-31
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the preparation of nano-bimetallic particles is usually obtained by reducing iron salt and another metal salt under liquid phase conditions. The granular material prepared by this method has low activity, and the addition of two metal salts needs to be controlled. , complex process

Method used

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  • Nano zero-valent iron-nickel composite material prepared on basis of laterite-nickel ore and preparation method of nano zero-valent iron-nickel composite material
  • Nano zero-valent iron-nickel composite material prepared on basis of laterite-nickel ore and preparation method of nano zero-valent iron-nickel composite material
  • Nano zero-valent iron-nickel composite material prepared on basis of laterite-nickel ore and preparation method of nano zero-valent iron-nickel composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The preparation of the nanometer zero-valent iron-nickel composite material described in this embodiment comprises the following steps:

[0055] 1.1 Crush and screen the laterite nickel ore to obtain granular materials with a particle size of <0.0374mm;

[0056] 1.2 Add 8mmol of the granular material into a three-necked flask, add 100mL of 90% ethanol solution into the three-necked flask and stir for 20h, then filter and centrifuge, wash with deionized water twice, and dry it in an oven to obtain The laterite nickel ore powder; then add 80mL of 1mol / L potassium borohydride or sodium borohydride solution into the three-necked flask to the laterite nickel ore powder, stir for 2 hours, and suction filter to obtain the precipitate, and the obtained precipitate The materials were washed with absolute ethanol, then sucked dry, and dried in a vacuum oven to obtain the nanometer zero-valent iron-nickel composite material.

Embodiment 2

[0058] The preparation of the nanometer zero-valent iron-nickel composite material described in this embodiment comprises the following steps:

[0059] 2.1 Crush and screen the laterite nickel ore to obtain granular materials with a particle size of <0.0374mm;

[0060] 2.2 Add 8 mmol of the granular material into a three-necked flask, add 100 mL of 90% ethanol solution into the three-necked flask and stir for 24 hours, then filter and centrifuge, wash with deionized water for 4 times, and dry it in an oven to obtain The laterite nickel ore powder; then add 80mL of 20mol / L potassium borohydride or sodium borohydride solution into the three-necked flask to the laterite nickel ore powder, stir for 10h, and suction filter to obtain the precipitate, and the obtained precipitate The materials were washed with absolute ethanol, then sucked dry, and dried in a vacuum oven to obtain the nanometer zero-valent iron-nickel composite material.

Embodiment 3

[0062] The preparation of the nanometer zero-valent iron-nickel composite material described in this embodiment comprises the following steps:

[0063] 3.1 Crush and screen the laterite nickel ore to obtain granular materials with a particle size of <0.0374mm;

[0064] 3.2 Add 8 mmol of the granular material into a three-necked flask, add 100 mL of 90% ethanol solution into the three-necked flask and stir for 22 hours, then perform filtration and centrifugation, wash with deionized water for 3 times, and dry it in an oven to obtain The laterite nickel ore powder; then add 80 mL of 15 mol / L potassium borohydride or sodium borohydride solution to the laterite nickel ore powder into a three-necked flask, stir for 5 hours, and suction filter to obtain a precipitate, and the obtained precipitate The materials were washed with absolute ethanol, then sucked dry, and dried in a vacuum oven to obtain the nanometer zero-valent iron-nickel composite material.

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Abstract

The invention discloses a nano zero-valent iron-nickel composite material prepared on basis of laterite-nickel ore and a preparation method of the nano zero-valent iron-nickel composite material. According to the method for preparing the nano zero-valent iron-nickel composite material on basis of the laterite-nickel ore, borohydride salt is used as a reducing agent to have a liquid-phase reductionreaction with the laterite-nickel ore, and the nano zero-valent iron-nickel composite material containing nano zero-valent iron and nano zero-valent nickel is generated. The prepared nano zero-valentiron-nickel composite material has rich nano-pore and micro-pore structures and also has higher chemical activity and catalytic activity, and the synthesis process is simple and easy to control.

Description

technical field [0001] The invention relates to the field of mineral materials, in particular to a nanometer zero-valent iron-nickel composite material prepared based on laterite nickel ore and a method thereof. Background technique [0002] Environmental mineral materials are special mineral materials that can purify pollutants spontaneously. Some of these materials are naturally occurring, and some are artificially processed. In addition to the function of removing pollutants, their common characteristics include easy access, simple equipment, Low cost and other characteristics. This kind of material can exert excellent purification effect on soil pollution, water pollution and air pollution. [0003] At present, nano-zero-valent iron has attracted widespread attention due to its strong reducibility and adsorption, but due to the small particle size and large specific surface area of ​​nano-zero-valent iron, it is easy to agglomerate during use, and nano-zero-valent iron ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00C02F1/72B82Y40/00B82Y30/00C02F101/30C02F101/36
CPCB22F9/24C02F1/725B82Y40/00B82Y30/00C02F2101/30C02F2101/36B22F1/07
Inventor 鲍腾李奇炎王晓飞慈娟俞志敏
Owner HEFEI UNIV
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