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Square tube catalyst dynamic structure in-situ characterization device and application thereof

A technology of dynamic structures and catalysts, applied in measuring devices, material analysis using wave/particle radiation, instruments, etc., can solve the problem of in-situ characterization of catalytic reactions, difficulty in using synchrotron radiation X-rays, and inability to obtain information at large angles and other problems, to achieve the effect of high pressure and temperature resistance, wide application range and reasonable structure

Pending Publication Date: 2017-05-24
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The sample cell involved in the patent ZL200910075167.3 has no medium access and exit channels, and cannot perform in-situ characterization of catalytic reactions involving gas or liquid media; when it is used for XRD characterization, large-angle information cannot be obtained
For the sample cell of patent ZL200910075168.8, when conducting experiments involving high-pressure gas media, the dead volume on the X-ray path is large, which seriously affects the signal-to-noise ratio, which reduces the quality of data during in-situ characterization experiments and makes it difficult to utilize the advantages of synchrotron radiation X-rays. great advantage

Method used

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  • Square tube catalyst dynamic structure in-situ characterization device and application thereof
  • Square tube catalyst dynamic structure in-situ characterization device and application thereof
  • Square tube catalyst dynamic structure in-situ characterization device and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033]An in-situ on-line characterization device for the dynamic structure of a square tube catalyst, which includes a furnace frame 1, a water-cooled shell 2, a beryllium tube support 3, a beryllium tube 4, a right bracket 6, a right compression screw 7, a right fixed lining ring 8, and a pipe outlet 9. Right pipeline connection plate 10, right internal thread sleeve 11, sealing ring 12, left internal thread sleeve 13, left pipeline connection plate 14, inlet pipe 15, left fixed lining ring 16, left compression screw 17, left bracket 18, It is characterized in that there is a right bracket 6 and a left bracket 18 inside the water-cooling shell 2, a furnace rack 1 is located between the right bracket 6 and the left bracket 18, there is a rectangular through groove in the upper middle of the water-cooling shell 2, and a V-shaped through groove is arranged in the upper middle of the furnace rack 1. The length of the rectangular channel and the V-shaped channel are equal. There is...

Embodiment 2

[0049] Device used is the same as embodiment 1, concrete steps:

[0050] 1. The material of the sealing ring 12 is selected as polytetrafluoroethylene;

[0051] 2. Aluminum oxide film is vapor-deposited in the cavity of beryllium tube 4, and a 100-160 mesh Ni / ZnO catalyst sample is loaded into the cavity of beryllium tube 4;

[0052] 3. Assemble the sample cell to ensure a good seal, and then assemble it with the furnace rack 2 and the water-cooled shell 2 in sequence, the rectangular slot in the middle of the beryllium tube support 3, the V-shaped slot in the middle of the furnace rack 1, and the rectangular slot in the middle of the water-cooled shell 2 mutual alignment;

[0053] 4. Fix the assembled device on the optical table of the X-ray characterization line station, and align the through slot in the middle of the beryllium tube support 3 with the X-ray path;

[0054] 5. Connect the fluid inlet pipe 15 and the outlet pipe 9, and connect the sample pool to the experimen...

Embodiment 3

[0060] Device used is the same as embodiment 1, concrete steps:

[0061] 1. The material of the sealing ring 12 is selected as polytetrafluoroethylene;

[0062] 2. A boron nitride film is vapor-deposited in the inner cavity of the beryllium tube 4;

[0063] 3. Assemble the sample cell to ensure a good seal, and then assemble it with the furnace rack 2 and the water-cooled shell 2 in sequence, the rectangular slot in the middle of the beryllium tube support 3, the V-shaped slot in the middle of the furnace rack 1, and the rectangular slot in the middle of the water-cooled shell 2 mutual alignment;

[0064] 4. Fix the assembled device on the optical table of the X-ray characterization line station, and align the through slot in the middle of the beryllium tube support 3 with the X-ray path;

[0065] 5. Inject the colloidal aluminum phosphorous aluminum molecular sieve catalyst precursor sample into the inner cavity of the beryllium tube 4, the fluid enters the tube 15 and exit...

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Abstract

The invention relates to a square tube catalyst dynamic structure in-situ on-line characterization device. The device is used for researching the crystallization process, metallic oxide catalyst roasting process, and activation, reaction, regeneration and other processes of various catalysts by XAFS (X-ray absorption fine structure), XRD (X-ray diffraction), SAXS (small angle X-ray scattering) and SAXS / WAXS (wide-angle X-ray scattering) in an in-situ on-line mode in the catalyst preparation process under the conditions of room temperature-500 DEG C and normal pressure-10 MPa. The device is used for monitoring the changes of the catalyst structure (especially surface microstructure) in such processes.

Description

technical field [0001] The invention belongs to an in-situ characterization device and application of a microstructure, in particular to an in-situ characterization device and application of a square tube catalyst dynamic structure. Background technique [0002] The vast majority of chemical reaction processes are catalytic processes, and the surface microstructure of the catalyst used is a crucial factor in determining its reaction performance. X-ray plays a very important role in the structural analysis and characterization of catalysts. Since the catalytic reaction process is usually carried out at a certain temperature and pressure, due to the limitations of previous technical conditions, it is very difficult to study the active center of the catalyst and its transition law under real reaction conditions. With the emergence and development of high-brightness, high-collimation, and energy-adjustable synchrotron radiation X-rays, it has provided the possibility for many r...

Claims

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Application Information

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IPC IPC(8): G01N23/00
CPCG01N23/00G01N2223/307G01N2223/309G01N2223/1016G01N2223/3307G01N2223/045
Inventor 王建国王国富樊卫斌秦张峰董梅何月盛沛
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI