Device and method for synthesizing fullerene structure nanometer WS2 and application of fullerene structure nanometer WS2

A technology of fullerene structure and synthesis device, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of inability to continuously prepare in large quantities, difficult to operate, difficult to discharge, etc., and achieve easy control, amplification, and reaction. The effect of short time and simple bed type

Active Publication Date: 2014-09-24
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the R.Tenne research group also applied for related patents in Europe and the United States (US2010227782, WO2006123336, WO2011111044), all of which used the above-mentioned fluidized bed reactor, but the structure of the reactor described in this invention is complicated. There are disadvantages such as difficult loading and unloading and difficult operation
Summarizing the current existing technologies, no matter physical or chemical methods, it is impossible to continuously prepare high-purity nano-WS with fullerene structure in large quantities. 2

Method used

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  • Device and method for synthesizing fullerene structure nanometer WS2 and application of fullerene structure nanometer WS2
  • Device and method for synthesizing fullerene structure nanometer WS2 and application of fullerene structure nanometer WS2

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Embodiment 1

[0033] Embodiment 1 A kind of fullerene structure nano WS 2 synthesis device

[0034] like figure 1 As shown, the device comprises a feed system, a fluidized bed reactor 4 and a cooling system 7 connected in sequence, and an air inlet is provided at the bottom of the fluidized bed reactor 4. The fluidized bed reactor 4 includes a gas distribution plate 4-1, a lower dense-phase bed 4-2 and an upper dilute-phase bed 4-3 from bottom to top. The outlet of the fluidized bed reactor 4 is connected to a cyclone separator 5 , and the bottom of the cyclone separator 5 is connected to the fluidized bed reactor 4 .

[0035] The feed system includes a feed bin 1 and a screw feeder 2 below the feed bin 1 ; the screw feeder 2 is connected to a fluidized bed reactor 4 through a feed valve 3 . A discharge valve is provided between the fluidized bed reactor 4 and the cooling system 7 . The gas inlet at the bottom of the fluidized bed reactor 4 is connected with the preheater 6, and the pre...

Embodiment 2

[0038] use as figure 1 The synthesized fullerene structured nano-WS shown 2 Process device diagram, in which the opening ratio of the gas distribution plate of the fluidized bed reactor is 1%, and the diameter of the lower layer dense-phase bed is 0.5 times the diameter of the upper layer dilute-phase bed.

[0039] The specific operation steps are as follows:

[0040] Nano-WO with a particle size of 20 nm 3 The powder is sent into the fluidized bed reactor 4 through the feed system, and the 2 , N 2 and H 2 The mixed gas of S is the raw material gas. The raw material gas is passed into the preheater 6 for preheating. The temperature of the preheated raw material gas is 500°C. The preheated raw gas passes through the gas distribution plate from the inlet at the bottom of the fluidized bed. 4-1 is evenly passed into the fluidized bed reactor 4, so that the WO in the fluidized bed reactor 4 3 The powder is in a fluidized state. Feed gas and WO in fluidized bed 3 The powder...

Embodiment 3

[0043] use as figure 1 The synthesized fullerene structured nano-WS shown 2 Process device diagram, in which the opening ratio of the gas distribution plate of the fluidized bed reactor is 0.5%, and the diameter of the lower dense-phase bed is 0.18 times the diameter of the upper dilute-phase bed.

[0044] The specific operation steps are as follows:

[0045] Nano-WO with a particle size of 100 nm 3 The powder is sent into the fluidized bed reactor 4 through the feed system, and the 2 , N 2 and H 2 The mixed gas of S is the raw material gas. The raw material gas is passed into the preheater 6 for preheating. The temperature of the preheated raw material gas is 500°C. The preheated raw gas passes through the gas distribution plate from the inlet at the bottom of the fluidized bed. 4-1 is evenly passed into the fluidized bed reactor 4, so that the WO in the fluidized bed reactor 4 3 The powder is in a fluidized state. Feed gas and WO in fluidized bed 3 The powder is full...

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Abstract

The invention relates to a device and a method for synthesizing fullerene structure nanometer WS2 and application of the fullerene structure nanometer WS2. The device comprises a fluidized bed reactor, wherein the fluidized bed reactor comprises a gas distribution plate, a lower-layer dense phase bed and an upper-layer dilute phase bed from bottom to top. Nanometer WO3 is fed into the fluidized bed reactor through a feeding system and is contacted with and reacts with H2S / N2+H2 gas at the bottom of the fluidized bed reactor, so that WS3 powder is in a fluidized state. A reaction product WS2 flows into a cooling system from an outlet at the bottom of the fluidized bed reactor to be cooled and then is fed into a product bin. The device and the method can be used for synthesizing ullerene structure nanometer WS2 particles even in size and with average diameter of less than or equal to 500nm, overcome the defect that superfine powder is difficult to fluidize, can enable nanometer powder to be evenly and quickly fluidized and are suitable for continuous large-scale production of inorganic fullerene nanometer particles. The process and bed type are simple and easy to control and scale up.

Description

technical field [0001] The invention belongs to the technical field of nano preparation, in particular to a fullerene structure nano WS 2 Synthetic device, method and application. Background technique [0002] Since the Israeli scientist R. Tenne (Nature, 1993, 365, 113-114) invented nano-tungsten disulfide with a fullerene structure, the preparation, synthesis and characteristics of transition metal disulfide nanocrystals have become the focus of domestic and foreign scholars in recent years. Research hotspots. In particular, nano-tungsten disulfide with a fullerene structure has unique layered physical structure characteristics, and is widely used in solar cells, solid lubricants, electronic probes, hydrogen storage materials, superconducting materials, and shock-resistant materials. [0003] MS 2 (M=Mo, W) The preparation of nanopowder can be divided into physical method and chemical method. Physical methods include high-energy ball milling method (CN 1793304A), elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G41/00B82Y30/00
Inventor 李军朱庆山李洪钟周丽余斌彭练
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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