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In-situ Raman sample pool

An in-situ Raman and sample cell technology, applied in Raman scattering, measuring devices, and material analysis through optical means, can solve problems such as interference and signal reduction, and achieve the effect of enhancing Raman signals

Inactive Publication Date: 2009-06-24
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an in-situ Raman sample cell to overcome the signal reduction and interference caused by traditional windows

Method used

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Experimental program
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Embodiment Construction

[0031] Please combine figure 1 with figure 2 , are respectively a three-dimensional schematic diagram and a schematic cross-sectional diagram of the in-situ Raman sample cell of the present invention.

[0032] The cell body of the in-situ Raman sample cell of the present invention is made of stainless steel, and the overall structure is composed of a top cover 1 and a kettle body 7, and the flange plate structure is used to seal the two parts of the top cover 1 and the kettle body 7 through the kettle body Ring 6 is sealed with screws, so that the pool body still maintains good airtightness under high temperature and high pressure.

[0033] The top of the top cover is provided with a top wire 4, combined with the force generated by the extrusion and expansion of the lens sealing ring 2, the lens 3 is fixed, and at the same time, it plays a role of sealing.

[0034] The inside of the still body 7 adopts a polytetrafluoroethylene lining 5, which can prevent the erosion of var...

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Abstract

The invention relates to an in-situ Raman cell. A cell body is made of stainless steel and lined with polyfluortetraethylene inside; a thermocouple is arranged in a stainless steel kettle body; a heating pipe is helically coiled outside the kettle body; top threads and a quartz lens fixed by an O-shaped ring are arranged at the top part of a sample cell; a flange disk type design is adopted between a top cover of an in-situ cell and the cell body; and because the quartz lens is adopted as a window to increase a collection solid angle, the invention improves the collection efficiency of Raman diffused light, and can be applied to inorganic synthesis and chemical reaction in a monitoring high-temperature and high-pressure hydrothermal system.

Description

technical field [0001] The invention relates to an in-situ monitoring and air-sensitive sample measuring device applicable to high-temperature and high-pressure hydrothermal systems and organic reaction processes, in particular to an in-situ Raman sample cell. Background technique [0002] Raman spectroscopy is an important modern spectroscopic technique, which is widely used in chemistry, physics, biology and other disciplines, and is a powerful tool for studying the molecular structure of substances. In general high-temperature and high-pressure systems, diamond and sapphire with hard texture, considerable compressive properties, and a certain thickness are often used as windows for Raman signal acquisition. Due to the relatively high pressure in such a system, the window is designed with a certain thickness considering the compressive performance of the material. Such a window will inevitably attenuate the detection light intensity and lose the Raman signal from the samp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/03G01N21/65
Inventor 李灿范峰滔冯兆池应品良
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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