In-situ gas-solid phase reaction pool for measuring high-temperature high-pressure dynamic field spectrum in situ

Abstract

The invention provides an in-situ gas-solid phase reaction pool for measuring high-temperature high-pressure dynamic field spectrum in situ. The reaction pool comprises a heating stage main body and an internal sample pool, wherein one side of the heating stage main body is provided with an air inlet passage, a reaction pool cover is arranged above the heating stage main body, and is provided with an unthreaded hole, and a window plate covers the unthreaded hole. The internal lower part of the heating stage main body is provided with a cabin body space for storing the sample pool, the bottom of the heating stage main body is provided with a horizontal adjusting transmission rod and is connected with the sample pool in the reaction pool cavity, the sample pool can move on the horizontal plane, a heating wire is wound at the periphery of the pool body, a thermocouple is inserted into the pool body, the bottom of the pool body is provided with an air outlet, and a cooling water passage is respectively arranged in each of the heating stage main body and the reaction pool cover. As a heating state adopts an internal adjusting way, the size of the unthreaded hole is reduced, the thickness of a quartz plate is reduced, the signal attenuation is reduced, a high space resolution requirement is met, and the structural variation of the sample can be monitored under the high-temperature high-pressure reaction condition.

Description

technical field [0001] The invention belongs to the technical field of instrumental analysis, and in particular relates to a reaction cell for high temperature and high pressure dynamic on-site spectroscopic gas-solid phase reaction measurement. Background technique [0002] High temperature and high pressure gas-solid phase catalytic reaction is a common reaction type in the chemical industry. The adsorption, reaction, and desorption of gas on solid samples under reaction conditions are important steps in gas-solid phase or heterogeneous catalysis. The structural changes of the molecular structure of the solid sample itself under reaction conditions reveal the formation of catalyst active centers. , the reaction structure-effect relationship and the key issues of catalyst deactivation. [0003] Modern molecular spectroscopy has been widely used in physics, chemistry, biology and other fields. Taking Raman spectroscopy as an example, many works have been carried out in the...

AI Technical Summary

Problems solved by technology

Although the existing Raman spectroscopy reaction cell can already conduct in-situ research under mild conditions (atmospheric pressure and low temperature), considering the pressure requirement on the thickness of the window, the higher the pressure of the reaction system, the greater the thickness of the window, thereby increasing the attenuation Probe light intensity, loss of Raman signal from the sample

Therefore, there is currently no catalyst reaction cell that can be effectively studied under harsh conditions (temperature: 300-1000°C, pressure: 10-100 kg).

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