Nanoacicular nickel-coated graphite composite particles and its preparation method and application

A technology of nickel-coated graphite and composite particles, which is applied in the field of synthesis of nano-needle-shaped nickel-coated graphite composite particles for p-aminophenol and its preparation, can solve the problems of difficult recycling and small particle size, and achieve low cost, prevent agglomeration, and facilitate The effect of recycling
CN103977802BActive Publication Date: 2016-05-11WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2016-05-11

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Abstract

The invention relates to a nano needle-like nickel-coated graphite compound particle and a preparation method and application thereof. The nano needle-like nickel-coated graphite compound particle is a nano needle-like nickel-coated flake graphite particle. The preparation method comprises the steps: processing the flake graphite particle, putting in a chemical nickel-plating solution, stirring while reacting, performing suction filtration, washing and drying to obtain the nano needle-like nickel-coated graphite compound particle. Compared with the prior art, the nano needle-like nickel-coated graphite compound particle has the main advantages that the activity of a catalyst prepared by adopting the preparation method is relatively high, for example, the reaction rate constant (k) for catalyzing reduction paranitrophenol by NaBH4 is 8.61*10<-2>min<-1>, and is greater than the k value (the rate constant is 14.82*10<-3>min<-1>) of a graphene oxide / nickel nano composite prepared by Ji and others and used for catalyzing the reaction. The nano needle-like nickel-coated graphite compound particle prepared by adopting the preparation method is magnetic, and is conveniently recycled. The preparation method disclosed by the invention is simple, low in cost and convenient to popularize and apply.
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Description

technical field

[0001] The invention relates to the technical field of composite materials and catalysis, in particular to a nano needle-shaped nickel-coated graphite composite particle for synthesizing p-aminophenol and its preparation method and application. Background technique

[0002] P-aminophenol (PAP) is an important medicine, dyestuff and organic synthesis intermediate, and it can also be used to manufacture various dyes, dyeing agents, rubber antioxidants, photographic developers, pesticide antioxidants and oil additives. At present, the synthesis methods of p-aminophenol mainly include p-nitrophenol iron powder reduction method, nitrobenzene method and p-nitrophenol catalytic hydrogenation method. Among them, the catalytic hydrogenation reduction method of p-nitrophenol has the advantages of simple operation, high product yield and good quality, so it is widely used. In the process of synthesizing p-aminophenol by the catalytic hydrogenation reduction method of p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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