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High-porosity micrometer porous NiO/Ni material/high-porosity nanometer porous NiO/Ni material and production method and special equipment thereof

A high-porosity, nano-porous technology, applied in the field of high-porosity micro/nano-porous NiO/Ni materials and their preparation, can solve the problems of uncontrollable shape and pore morphology of Ni-Al sintered blanks, difficult to prepare, etc. Effects of reduced charge transfer resistance and interfacial impedance, short reaction time, and abundant pores

Active Publication Date: 2020-11-17
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The purpose of this invention is to provide a porous NiO / Ni with high porosity micro / nano pores coexistence and its preparation method, which solves the problem that the existing combustion synthesis method is difficult to control the shape and pore morphology of Ni-Al sintered compact Uncontrollable and difficult to prepare nanopores on the framework

Method used

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  • High-porosity micrometer porous NiO/Ni material/high-porosity nanometer porous NiO/Ni material and production method and special equipment thereof
  • High-porosity micrometer porous NiO/Ni material/high-porosity nanometer porous NiO/Ni material and production method and special equipment thereof
  • High-porosity micrometer porous NiO/Ni material/high-porosity nanometer porous NiO/Ni material and production method and special equipment thereof

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Experimental program
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Effect test

Embodiment 1

[0041] Embodiment 1: according to the atomic ratio of nickel powder and aluminum powder, it is 1:1 to take raw materials, such as getting 11.8g nickel powder and 5.4g aluminum powder respectively, it is poured into the ball mill tank and carried out 4h uniform mixing, with Anhydrous ethanol is used as the ball milling medium; the mixed solution after ball milling is poured into a beaker, and put into a drying oven to dry for 24 hours; about 0.3g of the mixed powder is weighed, poured into a specific mold for pressing, and the obtained product is about d10mm×1mm The cylindrical green body is put into a vacuum tube furnace for heating, first heated to 480°C for 3 hours at a heating rate of 10°C / min, and then continued to heat up to 700°C for 10 minutes to obtain a micron with high porosity and a complete shape. Porous NiAl material. Configure 20wt.% NaOH corrosion solution, then cool to room temperature with the furnace, put the cleaned and dried sintered body into a test tube w...

Embodiment 2

[0046] Embodiment 2: according to the atomic ratio of nickel powder and aluminum powder, it is 1:1 to take raw materials, such as getting 11.8g nickel powder and 5.4g aluminum powder respectively, it is poured into the ball mill tank and carried out 4h uniform mixing, with Anhydrous ethanol is used as the ball milling medium; the mixed solution after ball milling is poured into a beaker, and put into a drying oven to dry for 24 hours; about 0.3g of the mixed powder is weighed, poured into a specific mold for pressing, and the obtained product is about d10mm×1mm The cylindrical green body is put into a vacuum tube furnace for heating, first heated to 480°C for 3 hours at a heating rate of 10°C / min, and then continued to heat up to 700°C for 10 minutes to obtain a micron with high porosity and a complete shape. Porous NiAl material. Prepare 20wt.% NaOH corrosive solution, then cool to room temperature with the furnace, put the cleaned and dried sintered body into a test tube wit...

Embodiment 3

[0048] Embodiment 3: according to the atomic ratio of nickel powder and aluminum powder, be 1:1 to take raw material, for example get 11.8g nickel powder and 5.4g aluminum powder respectively, it is poured into the ball mill jar and carry out 4h uniform mixing, with Anhydrous ethanol is used as the ball milling medium; the mixed solution after ball milling is poured into a beaker, and put into a drying oven to dry for 24 hours; about 0.3g of the mixed powder is weighed, poured into a specific mold for pressing, and the obtained product is about d10mm×1mm The cylindrical green body is put into a vacuum tube furnace for heating, first heated to 480°C for 3 hours at a heating rate of 10°C / min, and then continued to heat up to 700°C for 10 minutes to obtain a micron with high porosity and a complete shape. Porous NiAl material. Prepare 20wt.% NaOH corrosion solution, then cool to room temperature with the furnace, put the cleaned and dried sintered body into a test tube filled wit...

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Abstract

The invention relates to a high-porosity micrometer porous NiO / Ni material / high-porosity nanometer porous NiO / Ni material and a production method and special equipment thereof, and belongs to the field of micrometer porous materials / nanometer porous materials and production methods thereof. The micrometer porous NiO / Ni material / nanometer porous NiO / Ni material is formed by even pores and a continuous framework; The method comprises the steps of with nickel powder and aluminium powder as original powder, conducting thermal explosion to synthesize a porous NiAl material with micron-sized pores or a porous NiAl3 material with micron-sized pores through methods of mixing, pressing and vacuum sintering at first, then placing a sintered billet into a NaOH solution with a concentration of 10-30 wt.% for corrosion, and conducting production on the framework to obtain the porous NiO / Ni material with the nanometer pores and ligament structures. According to the high-porosity micrometer porous NiO / Ni material / high-porosity nanometer porous NiO / Ni material and the production method and special equipment thereof, the production advantages of the thermal explosion method and a dealloying methodare combined, the technology is simple to operate, short in synthesis time and economically feasible, the micrometer porous material / nanometer porous material finally obtained has abundant pore structures, the pores are evenly distributed, the porosity is higher than 50%, the size of the micron-sized pores is 9-30 [mu]m, the size of the nano-sized pores is 30-150 nm, and application in the fieldsof catalysis, supercapacitors, lithium ion batteries and the like is facilitated.

Description

technical field [0001] The invention relates to a micro / nano porous material and its preparation method and special equipment, in particular to a high porosity micro / nano porous NiO / Ni material and its preparation method and special equipment. Background technique [0002] Porous material is a kind of material with a network structure composed of interconnected or closed pores. The boundary or surface of the pores is composed of a skeleton. This is a new material system with integrated function and structure developed in the 20th century. It is considered sustainable development. And one of the important supports to promote the development of environment-friendly industry. Especially in coal gasification technology process units, the application of porous materials in filtration plays a key role, which is of great significance for improving industrial production efficiency, saving energy, protecting the environment and reusing resources. With the innovation of technology an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C19/03C22C21/00C22C3/00C22C1/10
CPCB22F3/11C22C1/10C22C3/00C22C19/007C22C19/03C22C21/00
Inventor 冯培忠焦欣洋蔡小平李周俊王晓虹
Owner CHINA UNIV OF MINING & TECH