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Metal catalyst preparation method and preparation method of carbon nanotube

A metal catalyst, carbon nanotube technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc., can solve the problem of inconsistent particle size and affect the quality of carbon nanotubes , low yield of metal catalysts, etc., to achieve the effect of uniform particle size, low production cost and high yield

Inactive Publication Date: 2016-09-28
徐丽丽
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems that the metal catalyst yield is low, the particle size is inconsistent, and the quality of the carbon nanotubes is affected in the existing carbon nanotube catalyst preparation method, the invention provides a metal catalyst preparation method and its carbon nanotube, compared with the traditional preparation method The method, the distribution of active metal and carrier metal elements in the metal catalyst prepared by the equipment method is more uniform, the particle size is small, and the particle size is consistent, which improves the yield of the metal catalyst and simplifies the preparation process

Method used

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  • Metal catalyst preparation method and preparation method of carbon nanotube
  • Metal catalyst preparation method and preparation method of carbon nanotube
  • Metal catalyst preparation method and preparation method of carbon nanotube

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preparation example Construction

[0032] The invention discloses a method for preparing a metal catalyst, comprising the following steps:

[0033] Step 1: provide a kind of metal salt solution, in described metal salt solution, be dissolved with leavening agent, carrier metal and active metal ion with carbon nanotube preparation catalysis, described leavening agent comprises organic acids, organic alcohols , one or more of organic aldehydes, nitrogen-containing organic compounds, and sugars;

[0034] Step 2: adding a precipitating agent into the metal salt solution, and stirring to obtain composite metal precipitation;

[0035] Step 3: Precipitating the composite metal and calcining at elevated temperature, cooling down after calcining, and sieving to obtain a metal catalyst.

[0036] When preparing the metal salt solution, take the active metal salt and the carrier metal salt according to the proportion of the catalyst components, dissolve them in deionized water, and filter to obtain the first solution; tak...

Embodiment 1

[0055] This embodiment is used to illustrate the preparation method of the metal catalyst disclosed in the present invention and its carbon nanotubes, comprising the following steps:

[0056] Step 1: Configure metal salt solution, weigh Fe(NO 3 ) 3 ·6H 2 O, Mg(NO 3 ) 2 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O, and dissolving it in deionized water, adding 5% sucrose by total weight, stirring, after the metal salt and sucrose are all dissolved, filtering impurities to obtain a metal salt solution;

[0057] Step 2: Add ammonia water to the metal salt solution to carry out catalyst precipitation, and NH in the ammonia water 3 ·H 2 The amount of the substance of O is equal to the total number of charges of metal cations in the metal salt solution, the pH value is adjusted to 10, and the composite metal precipitation is obtained by stirring, and the stirring speed is 2000 rpm;

[0058] Step 3: Put the prepared composite metal precipitate together with the metal salt solution into a mu...

Embodiment 2

[0062] This embodiment is used to illustrate the preparation method of the metal catalyst disclosed in the present invention and its carbon nanotubes, comprising the following steps:

[0063] Step 1: Prepare metal salt solution, weigh Ni(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O, and dissolving it in deionized water, adding 5% sucrose by total weight, stirring, after the metal salt and sucrose are all dissolved, filtering impurities to obtain a metal salt solution;

[0064] Step 2: Add ammonia water to the metal salt solution to carry out catalyst precipitation, and NH in the ammonia water 3 ·H 2 The amount of the substance of O is equal to the total number of charges of metal cations in the metal salt solution, the pH value is adjusted to 10, and the composite metal precipitation is obtained by stirring, and the stirring speed is 2000 rpm;

[0065] Step 3: Put the prepared composite metal precipitate together with the metal salt solution into a muff...

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Abstract

The invention provides a metal catalyst preparation method which comprises the following steps: I, providing a metal salt solution, wherein a raising agent, carrier metal and active metal ions with a carbon nanotube preparation activation function are dissolved in the metal salt solution; the raising agent comprises one or more of organic acid, organic alcohol, organic aldehydes, nitrogenous organic compounds and sugar; II, adding a precipitator into the metal salt solution, and stirring so as to obtain composite metal precipitation; III, heating and calcining the composite metal precipitation, and cooling after calcining, and screening, thereby obtaining a metal catalyst. Meanwhile, the invention further discloses a carbon nanotube prepared from the metal catalyst. Problems that the metal catalyst finished product rate of a nanotube catalyst preparation method is low, the particle size is not accordant, and the quality of carbon nanotubes can be affected are solved.

Description

technical field [0001] The invention relates to a method for preparing a metal catalyst suitable for fluidized bed equipment and a method for preparing carbon nanotubes. Background technique [0002] Carbon nanotubes are nanoscale tubular carbon materials with graphite crystals discovered in the early 1990s. It has been more than 20 years since the discovery of carbon nanotubes. There are dozens of methods for preparing carbon nanotubes represented by the initial arc discharge method, hydrothermal method and laser ablation method. However, due to the limitations of various methods, there is no One is suitable for the industrialization of carbon nanotubes, followed by a catalytic method, which is considered to be the most promising preparation method for the industrialization of carbon nanotubes. [0003] The catalytic method for preparing carbon nanotubes has high yield, low cost, and easy control of process parameters. However, the factors affecting the morphology and yie...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J23/889C01B31/02
CPCB01J23/83B01J23/002B01J23/8892B01J2523/00C01P2002/82C01P2002/85C01P2004/03B01J2523/842B01J2523/22B01J2523/3706B01J2523/847B01J2523/31B01J2523/845B01J2523/72
Inventor 徐丽丽沈河生
Owner 徐丽丽
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