Nickel nanofiber membrane for membrane catalysis and preparation method of nickel nanofiber membrane

A nanofiber membrane and nanofiber technology, which is applied in chemical instruments and methods, fiber types, fiber treatment, etc., can solve the problem of high activity, high-efficiency catalytic function and macro-preparation of supported nickel-based catalysts, and reduce the number of NiB particles. and effective catalytic area, the complex use process of supported catalysts, etc., to achieve the effect of easy to realize large-scale preparation, difficult to improve catalytic efficiency, and improve catalytic performance

Active Publication Date: 2015-12-16
佛山市维晨科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the above example is that: the same as most of the existing loads, the porosity of the ion exchange resin is low, so that the catalytic efficiency of the loaded nano-nickel is still not high enough; in addition, the type of ion exchange resin depends on the use environment, Using this material as a support makes the use of supported catalysts complicated
[0007] The disadvantage of the above example is that NiB particles and PVDF nanofibers are blended and combined, and it is difficult to avoid bei

Method used

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  • Nickel nanofiber membrane for membrane catalysis and preparation method of nickel nanofiber membrane
  • Nickel nanofiber membrane for membrane catalysis and preparation method of nickel nanofiber membrane

Examples

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Embodiment 1

[0035] A method for preparing a nickel nanofiber membrane for membrane catalysis, comprising the following steps:

[0036] 1) Mix 0.2kg of thermoplastic polymer PVA-co-PE and 3.8kg of cellulose acetate butyrate uniformly, extrude and granulate in a twin-screw extruder with a processing temperature of 170°C to prepare PVA -co-PE / cellulose acetate butyrate composite.

[0037] 2) drawing the PVA-co-PE / cellulose acetate butyrate composite material obtained through step 1) through a melt spinning machine, and spinning to obtain a composite fiber;

[0038] 3) Reflux the composite fiber in acetone at 60°C for 72 hours to extract cellulose acetate butyrate, dry the composite fiber after extraction at room temperature, and prepare PVA-co-PE nanofibers with an average diameter of 50nm .

[0039] 4) Get 0.5g of PVA-co-PE nanofibers and disperse them in 500ml of ethanol to form a nanofiber dispersion, and then coat the nanofiber dispersion on the surface of a smooth plastic film or glas...

Embodiment 2

[0049] A method for preparing a nickel nanofiber membrane for membrane catalysis, comprising the following steps:

[0050] 1) 0.5kg of thermoplastic polymer PVA-co-PE is uniformly mixed with 4kg of cellulose acetate butyrate, extruded and granulated in a twin-screw extruder with a processing temperature of 170°C to prepare PVA- co-PE / cellulose acetate butyrate composite.

[0051] 2) drawing the PVA-co-PE / cellulose acetate butyrate composite material obtained through step 1) through a melt spinning machine, and spinning to obtain a composite fiber;

[0052] 3) Reflux the composite fiber in acetone at 60°C for 72 hours to extract cellulose acetate butyrate, dry the composite fiber after extracting cellulose acetate butyrate at room temperature, and prepare PVA-co-PE nanofibers with an average diameter of 100nm .

[0053] 4) Get the PVA-co-PE nanofiber of 0.7g and be dispersed in the ethanol of 700ml, form nanofiber dispersion liquid, then nanofiber dispersion liquid is coated ...

Embodiment 3

[0063] A method for preparing a nickel nanofiber membrane for membrane catalysis, comprising the following steps:

[0064] 1) Mix 1kg of thermoplastic polymer PVA-co-PE and 4kg of cellulose acetate butyrate evenly, extrude and granulate in a twin-screw extruder with a processing temperature of 170°C to prepare PVA-co -PE / cellulose acetate butyrate composite.

[0065] 2) Drawing and spinning the PVA-co-PE / cellulose acetate butyrate composite material obtained in step 1) through a melt spinning machine to obtain composite fibers.

[0066] 3) Reflux the composite fiber in acetone at 60°C for 72 hours to extract cellulose acetate butyrate, dry the composite fiber after extracting cellulose acetate butyrate at room temperature, and prepare PVA-co-PE nanofibers with an average diameter of 200nm .

[0067] 4) Get the PVA-co-PE nanofiber of 0.5g and disperse it in the ethanol of 500ml, form the nanofiber dispersion liquid, then the nanofiber dispersion liquid is coated on smooth pla...

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Abstract

The invention relates to a nickel nanofiber membrane for membrane catalysis. The nickel nanofiber membrane is composed of a thermoplastic polymer nanofiber membrane and a nickel nano membrane deposited on the thermoplastic polymer nanofiber surface and comprises components in mass of 14%-75% of the thermoplastic polymer nanofiber membrane and 25%-86% of the nickel nano membrane. A preparation process adopts the method that thermoplastic polymers and cellulose acetate butyrate are subjected to blending melt spinning in proportion, thermoplastic polymer nanofibers are prepared through solvent extraction and dispersed and coated to the surface of a smooth substrate, and the thermoplastic polymer nanofiber membrane is taken down after drying. The nanofiber membrane is placed into a nickel bath with a certain formula for chemical nickel-plating after allergy and activating treatment and dried after taken out to obtain the nickel nanofiber membrane for membrane catalysis. The process is simple, the cost is low, and large scale preparation is easy to implement. The nickel nanofiber membrane for membrane catalysis has the characteristics that the porosity is high, the pore diameter is controllable, the flux is large, the catalytic activity is high, and separation is easy.

Description

technical field [0001] The invention relates to a nickel nanofiber membrane for membrane catalysis and a preparation method thereof, belonging to the field of catalyst preparation. Background technique [0002] The development of modern industry produces a large amount of sewage, which contains a large number of harmful substances. For example, p-nitrophenol is a toxic pollutant, which can be used in the pharmaceutical and chemical fields by catalyzing it into p-aminophenol to turn waste into treasure. Nickel is an important catalyst for the hydrogenation reduction of p-nitrophenol to p-aminophenol. In addition, the use of nickel as a catalyst is also a commonly used and effective method in the preparation of hydrogen and the synthesis of nano-carbon materials. Nickel catalysts include two types: one is non-supported catalysts, mainly including skeleton nickel and nano-nickel particles; the other is supported catalysts, and the carriers used are mainly mesoporous carbon, M...

Claims

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Application Information

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IPC IPC(8): B01J31/06D06M11/83D06M101/24D06M101/20D06M101/34D06M101/32D06M101/38
Inventor 刘轲汪元王栋程盼刘琼珍李沐芳蒋海青
Owner 佛山市维晨科技有限公司
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