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Porous composite material of microfiber structural micrometer size granule and its preparation method

A technology of porous composite materials and microfiber structures, applied in chemical instruments and methods, catalyst activation/preparation, organic compound/hydride/coordination complex catalysts, etc., can solve limitations, expensive fibers, corrosion resistance and resistance Insufficient oxidation performance and other problems, to achieve the effect of large porosity, large area to volume ratio, and easy manufacture

Inactive Publication Date: 2007-12-19
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the use of sintered metal Ni fibers can support porous and large specific surface area micron particles with a large load, it can significantly improve the mass transfer and heat transfer performance of the reaction bed and improve the utilization efficiency of the reactor when used in the reaction or adsorption process; but the metal fiber material Insufficient in corrosion resistance and oxidation resistance, and the fiber is expensive, so that the application of this new structural composite material is greatly limited

Method used

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  • Porous composite material of microfiber structural micrometer size granule and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1: The binder is water-insoluble cellulose with a diameter and length of 10-100 μm and 1-10 mm, respectively. Microfibers are DCF chopped fibers with a diameter of 20 μm and a length of 6 mm sold by Ningbo Dacheng New Material Co., Ltd. The scale particles are activated carbon particles with a particle size of 100-150 μm. Take 0.9g of binder and add it to 1800g of water, stir evenly, then add 1.5g of microfibers and 7.5g of particles to the above liquid in turn, stir to form a uniform slurry, bond The weight ratio of agent: microfibers: micron-sized particles: water is 1:1.67:8.33:2000.

[0030] The second step: the slurry that the first step is made joins in the filter container that fills 5400g water, water is filtered out after mixing, forms wet filter cake on filter mould, binding agent: the weight ratio that adds water is 1:6000.

[0031] Step 3: Dry the wet filter cake obtained in the second step, and sinter the dry filter cake at a temperature of 135°C and ...

Embodiment 2

[0041] Except the following difference, all the other are the same as embodiment 1.

[0042] In the first step, the amount of the binder and the particles added is 0.9g and 9.0g respectively, and the weight ratio of binder:microfiber:micron-sized particles:water is 1:1.67:10:1000. In the second step, the weight ratio of binder: added water is 1:3000. In the third step, the sintering pressure is 50 kg, and the sintering time is 5 minutes. The void ratio of the product is 51%, and the microfibers account for 4.5% of the total volume of the product. This product is labeled B'.

Embodiment 3

[0044] Except the following difference, all the other are the same as embodiment 1.

[0045] In the first step, the amounts of microfibers and particles added are 2.7 g and 9.0 g respectively, and the weight ratio of binder: microfibers: micron-sized particles: water is 1:3:10:3000. In the second step, the weight ratio of binder: added water is 1:7000. In the third step, the sintering pressure is 15 kg, and the sintering time is 4 minutes. The void ratio of the product is 65%, and the microfibers account for 8% of the total volume of the product. This product is labeled C'.

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Abstract

The porous composite material with microfibrillar structure and micron level grain and its preparation process belongs to the field of catalyst, catalyst carrier, filtering material and adsorbing separation material technology. The material contains organic polymer microfiber and functional material grain in micron level size, has microfiber binding points sintered together to form 3D netted structure and micron level size grains homogeneously bound to the microfiber, and possesses porosity of 50-80 % and microfiber accounts for 3-12 vol%. The preparation process of the material includes mixing microfiber, micron level size grains and binder in water to form slurry; filtering the slurry in forming mold to from precursor; drying the precursor and sintering the microfiber contacts at specific temperature, atmosphere and pressure to form the porous composite material. The material has the advantages of great porosity, great specific surface area, easy preparation and low cost.

Description

technical field [0001] The invention relates to a porous composite material of microfiber structured micron-scale particles and a preparation method thereof, in particular to a porous composite material of partially sintered organic polymer fiber structured micron-scale particles and a manufacturing method thereof. The technical field of catalyst, catalyst carrier, filter material and adsorption separation material and its preparation. Background technique [0002] Large-surface-area, porous composites are important engineering materials and are widely used in many fields such as catalysts, catalyst supports, filter materials, and adsorption and separation materials. Inorganic oxide or metal porous composites are usually fabricated by sintering / melting, extruding or bonding microspheres. Porous materials produced by sintering / fused or bonded microsphere techniques can only obtain a narrow distribution of porosity in a fixed area, and the value of the porosity depends strong...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06B01J37/00
Inventor 路勇薛青松陈金春汤殷王红刘月明杨建国何鸣元
Owner EAST CHINA NORMAL UNIV