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

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...

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 being burdened by polymers, thereby greatly reducing the number of NiB particles exposed on the surface and the effective catalytic area; in addition, the electrospinning method The yield of the produced nanofibers is low, making it difficult to achieve large-scale production

[0008] In summary, the existing preparation methods are difficult to achieve high activity, high-efficiency catalytic function and macro-scale preparation of supported nickel-based catalysts, and the emergence of related new technologies is urgently needed

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