Versatile low dead volume gas-solid phase reactor suitable for various in situ spectroscopic characterizations

Abstract

The invention relates to a multifunctional low dead volume gas-solid phase reactor suitable for various in-situ spectroscopic characterization, comprising a reactor shell, a reactor main body and a cover assembly. The reactor shell can be embedded on the in-situ spectrum, and the reaction An installation groove is opened on the outer shell of the reactor; the main body of the reactor can be installed on the installation groove, and a groove-shaped reaction cavity is opened on the main body of the reactor, and the reaction cavity is filled with the catalyst to be characterized by in-situ spectroscopy; the cover assembly Windows are detachably provided on the top. Compared with the prior art, the reactor in the present invention is used in a gas-solid catalytic system and is used in conjunction with a spectroscopic characterization instrument to obtain the structural information of the solid catalyst under real reaction conditions, providing important information for the design and development of the catalyst. It has a wider application range, only needs to replace the reactor cover, has a small internal dead volume, and has a low average gas residence time, making the in-situ spectroscopic study of gas-solid phase reactions with higher time resolution.

Description

technical field [0001] The invention relates to the technical field of instrument analysis, in particular to a multifunctional low dead volume gas-solid phase reactor suitable for various in-situ spectral characterization. Background technique [0002] Gas-solid phase catalytic reaction is a common type of reaction in the chemical industry. The adsorption, reaction, and desorption of gas on solid samples under reaction conditions are important steps in gas-solid catalysis reactions, while the molecular and atomic structures of solid samples themselves change dynamically under reaction conditions, resulting in the formation of catalyst active centers such as A series of key scientific issues such as the law, the structure-activity relationship of catalytic reactions, and the mechanism of catalyst deactivation. In situ spectroscopy can directly characterize the structural changes of catalysts or the conversion process of intermediate species, and is widely used in the study o...

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Problems solved by technology

[0004] In order to reduce the residence time of the material, it can be realized by increasing the operating gas velocity or reducing the volume of the in-situ pool, but the operating gas velocity should not be too high, otherwise it will cause disadvantages such as increased convective heat loss and uneven temperature in the pool, so the design An in situ reactor with the lowest possible dead volume is critical

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