Process for preparing Fe-series catalyst used to synthesize nano carbon tubes

A catalyst and synthetic carbon technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of small scale, low efficiency, wall thickness, uneven pipe diameter, etc., and achieve small diameter , thin wall and low cost
CN1376636AInactive Publication Date: 2002-10-30TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2002-10-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process for preparing Fe-series catalyst used to synthesize nano carbon tubes by gas-phase catalytic deposition method includes such steps as liquid-phase codeposition reaction of inorganic Fe saltand carbonate at 25-85 deg.C under existance of water-soluble disperser, hydrothermal modification of suspension at 105-150 deg.c, filtering and washing deposit, and calcining at 300-800 deg.C to obtain the high-dispersity catalyst. The nano carbon tubes prepared with said catalyst features thin wall, fine diameter (3-10 nm) and high uniformity.
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Description

Technical field

[0001] The invention relates to a method for preparing a catalyst, in particular to a method for preparing an iron-based catalyst for the synthesis of carbon nanotubes by a catalytic chemical vapor deposition method, and belongs to the technical field of inorganic chemical technology. Background technique

[0002] Nano powder refers to a powder material with a particle size of 1-100 nm. The special structure of nanomaterials makes it have surface effects, volume effects, quantum size effects, and macro-quantum tunneling effects, etc., so it has a series of novel physical and chemical properties, and has great application value in many fields including the chemical industry. For example, there are a large number of interfaces in nanomaterials. These interfaces provide short-range diffusion pathways for atoms. Therefore, nanomaterials have high activity and diffusivity, and have significant effects on chemical reactions, creep, superplasticity and other properties. ...

Claims

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