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Carbon nanofiber and activated carbon composite material and preparation method thereof

A technology of carbon nanofibers and composite materials, applied in separation methods, chemical instruments and methods, alkali metal compounds, etc., can solve the problems of significant thermal effect and low adsorption efficiency, and achieve high adsorption-desorption efficiency, fast adsorption rate, and easy The effect of the operation

Active Publication Date: 2019-06-14
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Problems solved by technology

[0008] Based on the problems existing in the prior art, the purpose of the present invention is to provide a nano-carbon fiber activated carbon composite material and its preparation method, which can solve the problem that the existing activated carbon or carbon-based materials are used alone as the adsorbent of the vehicle refueling oil gas recovery system. Low efficiency, significant thermal effect and other issues

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  • Carbon nanofiber and activated carbon composite material and preparation method thereof

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preparation example Construction

[0028] see figure 1 , the embodiment of the present invention provides a preparation method of carbon nanofiber and activated carbon composite material, comprising:

[0029] Step A, prepare polyvinyl alcohol solution and nickel nitrate hexahydrate solution respectively:

[0030] The preparation of the polyvinyl alcohol solution is as follows: dissolving the polyvinyl alcohol in deionized water, stirring in a constant temperature water bath at 95°C until the polyvinyl alcohol is fully dissolved to prepare a polyvinyl alcohol solution;

[0031] The preparation of nickel nitrate hexahydrate solution is as follows: dissolving nickel nitrate hexahydrate with deionized water, stirring until the nickel nitrate hexahydrate is fully dissolved, and making nickel nitrate hexahydrate solution;

[0032] Step B, add dropwise 0.1 mL of dilute hydrochloric acid with a mass concentration of 10% into the polyvinyl alcohol solution, slowly add the hexahydrate nickel nitrate solution into the po...

Embodiment

[0055] see figure 1 , the present embodiment provides a carbon nanofiber and activated carbon composite material, the preparation method of which comprises the following steps:

[0056] Step A, prepare polyvinyl alcohol solution and nickel nitrate hexahydrate solution respectively;

[0057] Among them, the preparation of the polyvinyl alcohol solution is as follows: dissolve 0.700 g of polyvinyl alcohol in 10 mL of deionized water, stir in a constant temperature water bath at 95 ° C, and wait until it is fully dissolved to make a polyvinyl alcohol solution;

[0058] Preparation of nickel nitrate hexahydrate solution is as follows: dissolve 1.800g nickel nitrate hexahydrate with 10mL deionized water, stir until fully dissolved, and make nickel nitrate hexahydrate solution;

[0059] Step B, first drop 0.1mL (generally 1 to 2 drops) of dilute hydrochloric acid with a mass concentration of 10% into the polyvinyl alcohol solution to prevent precipitation from being hydrolyzed too ...

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Abstract

The invention discloses a carbon nanofiber and activated carbon composite material and a preparation method thereof. The preparation method comprises the following steps: A) respectively preparing a polyvinyl alcohol solution and a nickel nitrate hexahydrate solution; B) dropwise adding diluted hydrochloric acid into the polyvinyl alcohol solution, adding the nickel nitrate hexahydrate solution into the polyvinyl alcohol solution, and uniformly stirring; C) dropping glycol and triethanolamine into the mixed solution and uniformly stirring, thereby obtaining transparent sol liquid; D) adding activated carbon, then performing ultrasonic treatment, and standing, thereby obtaining precursor sol; E) drying the precursor sol into dry precursor gel; F) preparing the dry precursor gel into a nickel-containing carbon nanofiber and activated carbon composite material in a vertical roasting furnace of a CCVD reactor according to the conditions; G) soaking the nickel-containing composite materialin diluted hydrochloric acid or dilute nitric acid, removing metallic oxides on the surface, washing with deionized water, and drying, thereby obtaining the carbon nanofiber and activated carbon composite material. The method is capable of combining the advantages of activated carbon and carbon nanofibers and is capable of promoting efficient adsorptive property of the composite material to oil gas.

Description

technical field [0001] The invention relates to the field of composite material preparation, in particular to a nano-carbon fiber and activated carbon composite material and a preparation method thereof. Background technique [0002] On-board refueling vapor recovery system ORVR (On-Board Refueling Vapor Recovery) is a control system related to vehicle emissions. The steam is not directly discharged from the fuel filler to the atmosphere, which avoids the pollution of the atmosphere and improves the atmosphere. At the same time, it also saves energy and is easy to promote and use. In order to improve the performance of the ORVR system, it is very important to develop high-performance oil and gas adsorbents. necessary. [0003] In the actual use of the ORVR system, the high vapor load of the activated carbon tank may exceed its recovery capacity, resulting in the penetration of untreated oil and gas. This requires the adsorbent to have high adsorption rate, low adsorption se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
Inventor 朱玲王春雨宫徵羽杨玉洁罗清月宋明欣魏峰驿
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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