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Sample pool for representing characteristics of normal position of dynamic catalyst structure and utilization method

A technology for dynamic structure and sample characterization, applied in material analysis using radiation diffraction, material analysis using wave/particle radiation, measuring devices, etc., to achieve the effect of easy operation and simple structure

Active Publication Date: 2012-05-30
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

After searching, no in-situ characterization device for catalyst dynamic structure under real reaction conditions was found

Method used

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  • Sample pool for representing characteristics of normal position of dynamic catalyst structure and utilization method
  • Sample pool for representing characteristics of normal position of dynamic catalyst structure and utilization method
  • Sample pool for representing characteristics of normal position of dynamic catalyst structure and utilization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Put the inner liner 3 and the pressure tube 1 assembly into the middle of the circular channel of the outer shell 4, and align the round hole 14 on the outer shell 4 with the round hole on the inner liner 3, and align the fan-shaped slot hole on the outer shell 3 Fan-shaped slot 15;

[0035] (2) Gaskets 10 are placed on both ends of the inner liner 3 and the pressure-bearing pipe 1 assembly;

[0036] (3) After the sample to be measured is loaded into the sample chamber 2 from the upper window 17, the upper window 17 is inserted into the transverse groove on the top of the sample chamber body 20;

[0037] (4) Put the plug 11 with a blind hole into the circular channel of the shell 4, place a septum 12 on the outside of the plug 11, and set the compression screw 13 with a circular through hole with a small diameter and the plug screw 13 with a blind hole. The plug 11 is mounted on the same side and tightened firmly;

[0038] (5) Put the assembly of the sample chambe...

Embodiment 2

[0043] Example 2: Catalyst reduction activation characterization. Among them, the sample chamber 2 is loaded with a circular catalyst tablet, and the material of the sealing gasket 10 is flexible graphite; the material of the pressure tube 1 is boron nitride ceramics, the thickness is 1 mm, the control temperature is 400 ° C, and the pressure is 0.1 MPa. All the other are with embodiment 1.

Embodiment 3

[0044] Example 3: Catalyst reaction characterization. Among them, the sample chamber 2 is loaded with catalyst of 80-100 mesh, the material of the sealing gasket 10 is polyimide; the material of the pressure-bearing tube 1 is metal beryllium, and the thickness is 2 mm. The liquid reactant is passed through the fluid inlet and outlet pipe 6, and the tail liquid is discharged through the fluid inlet and outlet pipe 5. The control temperature is 50°C and the pressure is 6MPa. All the other are with embodiment 1.

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Abstract

The invention relates to a sample pool for representing characteristics of a normal position of a dynamic catalyst structure, comprising a pressure-bearing pipe (1), a sample bin (2), an inside lining (3), a shell (4), fluid feeding and discharging pipes (5, 6), compression screws (12, 13), partition pads (7, 11), choke plugs (8, 10) and a sealing gasket (9). The sample pool is a sample pool capable of being penetrated by X-rays and working under the conditions of the room temperature of -400 DEG C and the normal atmosphere of -6 MPa, can research the crystallization process when a catalyst is prepared, the baking of a metallic oxide catalyst and the processes, i.e. the activation, the reaction, the reproduction, and the like of various catalysts in a normal position on-line way by an XAFS (X-ray absorption fine structure), XRD (X-ray diffraction), SAXS (small-angle X-ray scattering) and the SAXS / WAXS (the small-angle X-ray scattering and wide angle X-ray scattering) and monitor the change of the catalyst structure (in particular the surface microstructure of the catalyst) in the processes.

Description

technical field [0001] The invention belongs to a catalyst dynamic structure in-situ characterization device and a use method, in particular to a sample cell and a use method for in-situ characterization of the catalyst dynamic structure based on a synchrotron radiation X light source. Background technique [0002] Most chemical reactions are catalytic processes. For catalysts, their surface microstructure is a crucial factor in determining their catalytic performance. Therefore, the catalytic active centers of catalysts and their changing rules have always been the focus of attention. With the continuous advancement of science and technology, many methods and means for analyzing and characterizing catalyst structures have been developed. Such as infrared spectroscopy, ultraviolet spectroscopy, Raman spectroscopy, electron microscopy, electron spectroscopy, X-rays, etc. With its unique advantages, X-ray plays a very important role in the analysis and characterization of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/083G01N23/20
Inventor 王建国王国富秦张峰董梅胡天斗黄礼春谢亚宁吴忠华蔡泉
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI