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Sample pool for representing characteristics of normal position of dynamic catalyst structure

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

Active Publication Date: 2010-01-13
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
  • Sample pool for representing characteristics of normal position of dynamic catalyst structure
  • Sample pool for representing characteristics of normal position of dynamic catalyst structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Put the inner lining (3) and pressure pipe (1) assembly into the middle of the circular channel of the shell (4), and the upper hole of the inner lining (3) is aligned with the upper hole (14) of the shell (4) , The sector-shaped slot hole on the inner lining (3) is aligned with the sector-shaped slot hole (15) on the shell;

[0035] (2) Seal gaskets (10) are placed on both ends of the inner lining (3) and pressure pipe (1);

[0036] (3) After the sample to be tested is loaded into the sample bin (2) from the upper window (17), insert the upper window (17) into the transverse groove on the upper part of the sample bin body (20);

[0037] (4) Put the plug (11) with a blind hole into the circular channel of the housing (4), and place a septum (12) on the outside of the plug (11) to open a small diameter circular through hole. The tightening screw (13) and the plug (11) with blind holes are installed on the same side and tightened firmly;

[0038] (5) Put the sample compartme...

Embodiment 2

[0043] Example 2: Characterization of catalyst reduction activation. The sample chamber (2) is filled with a round catalyst pellet, the gasket (10) is made of flexible graphite; the pressure tube (1) is made of boron nitride ceramic, the thickness is 1mm, and the control temperature is 400°C. The pressure is 0.1MPa. The rest is the same as in Example 1.

Embodiment 3

[0044] Example 3: Characterization of the catalyst reaction. The sample chamber (2) is filled with a catalyst of 80-100 mesh, the material of the sealing gasket (10) is polyimide; the material of the pressure 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 from the fluid inlet and outlet pipe (5). The control temperature is 50°C and the pressure is 6MPa. The rest is the same as in Example 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 an in-situ characterization device for a catalyst dynamic structure and a use method, and particularly relates to a sample cell for in-situ characterization of a catalyst dynamic structure based on a synchrotron radiation X light source and a use method. Background technique [0002] Most chemical reaction processes are catalytic processes. For a catalyst, its surface microstructure is a crucial factor in determining its catalytic performance. Therefore, the catalytic activity center of the catalyst and its transition law 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 researched and developed. Such as infrared spectrum, ultraviolet spectrum, Raman spectrum, electron microscopy, electron energy spectrum, X-ray, etc. With its unique advantages, X-ray occupies a very important position in the ana...

Claims

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Application Information

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IPC IPC(8): G01N23/083G01N23/20G01N23/201G01N23/203
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